Cover body assembly and cooking utensil

Abstract

The utility model provides a cover body assembly and a cooking utensil. The cover body assembly comprises a cover main body, a buckling piece, a guide connecting piece, a rotating frame, a transmission connecting piece and a driving piece. The cap body includes an inner cap. The buckling piece can move to a locking position or an unlocking position in the radial direction of the inner cover. The rotating frame can rotate around a first axis relative to the cover body. The edge of the rotating frame is provided with a transmission part. The swivel mount includes a guide hole. And the buckling piece is connected with the guide hole through the guide connecting piece. The guide hole includes a drive section. The radial size of the driving section is equal to the maximum moving distance of the buckling piece in the radial direction. The tangential direction of any point of the driving track is not parallel and not perpendicular to the connecting line of the two ends of the driving track. The transmission connecting piece is rotationally connected to the cover body around a second axis. And the transmission connecting piece is connected to the transmission part and drives the rotating frame to rotate. The driving piece is connected to the transmission connecting piece and can drive the transmission connecting piece to rotate. The requirement for the output torque of the driving motor can be lowered.

Description

Technical Field

[0001] This application relates generally to the technical field of cookware, and more specifically to a lid assembly and cooking utensil. Background Technology

[0002] In pressure cooking appliances using related technologies, the motor assembly directly drives a rotatable rotating frame to reciprocate the locking mechanism, thereby locking and unlocking the lid and inner pot. To extend the safety, strength, and lifespan of the pressure cooking appliance, the locking mechanism requires better materials and a specific shape, increasing its weight. The rotating frame is also prone to damage during prolonged use. Furthermore, the motor assembly needs to output a larger torque to drive the rotating frame, necessitating the use of a motor assembly with higher torque output, which increases the cost of the cooking appliance. Utility Model Content

[0003] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0004] To at least partially address the aforementioned problems, a first aspect of this application provides a lid assembly for a cooking utensil, the lid assembly comprising:

[0005] A cover body, the cover body including an inner cover;

[0006] A fastening element that is movable between a locked position and an unlocked position along the radial direction of the inner cover;

[0007] A guide connector, which is connected to the fastening member;

[0008] A rotating frame, which is rotatable relative to the cover body about a first axis, has a transmission part on its edge, and includes a guide hole. A guide connector is slidably connected along the guide hole. The guide hole includes a drive segment extending along a preset drive trajectory. The dimension of the drive segment in the radial direction is equal to the maximum distance the fastener moves in the radial direction. The angle between the tangent of any point on the drive trajectory and the line connecting the two ends of the drive trajectory to the two ends is α, where α ≠ 0° and α ≠ 90°.

[0009] A transmission connector, rotatably connected to the cover body about a second axis parallel to the first axis, and connected to the transmission part to drive the rotating frame to rotate; and

[0010] A driving component, which is connected to the transmission connector and can drive the transmission connector to rotate.

[0011] According to the cover assembly of the first aspect of this application, since the radial dimension of the drive section is equal to the maximum distance the fastener moves radially, and the angle between the line connecting the tangent of the circle centered on the first axis and the two ends of the drive trajectory at any point on the drive trajectory is α, where α≠0° and α≠90°, this can reduce the reaction force of the fastener on the rotating frame in the tangential direction, that is, reduce the resistance of the fastener on the rotating frame in the tangential direction, thereby reducing the torque required for the rotating frame when it is driven, and thus helping to reduce the driving force requirement of the drive member.

[0012] Optionally, 0°<α≤45°.

[0013] According to this application, by setting the range of the included angle α to 0°<α≤45°, the reaction force of the fastening element on the rotating frame in the tangential direction can be further reduced, thereby further reducing the torque required for the rotating frame when it is driven, and further reducing the driving force requirement of the driving element.

[0014] Optionally, 10°≤α≤30°.

[0015] According to this application, since the radial movement distance of the fastener is linearly related to the length of the drive section, a small α will lead to an increase in the length of the drive section when the radial movement distance of the fastener is constant. A lower limit for α is defined here to prevent the length of the drive section from becoming excessive, thereby ensuring that the structural strength of the rotating frame at the guide hole is not too small. By further defining the upper limit of α to 30°, compared to a fixed upper limit of α of 30°, the resistance of the fastener on the rotating frame during rotation can be further reduced, thereby further reducing the torque required when the rotating frame is driven, and further reducing the output power requirement of the drive component. In short, by setting the range of the included angle α to 0°<α≤30°, the tangential reaction force of the fastener on the rotating frame can be further reduced, thereby further reducing the torque required when the rotating frame is driven, and further reducing the driving force requirement of the drive component.

[0016] Optionally, the driving member is disposed on the outside of the rotating frame along the radial direction of the inner cover, and the distance between the first axis and the second axis is greater than the radius of the rotation trajectory of the rotating frame.

[0017] According to this application, by arranging the drive component on the outside of the rotating frame along the radial direction of the inner cover, the lever arm of the driving force provided by the drive component at the rotating frame can be increased, thereby reducing the driving force required by the drive component, which in turn helps to reduce the cost requirements for drive component selection.

[0018] Optionally, the rotating frame includes a frame and a main beam. The frame includes the guide hole and the transmission part. A hollow area is provided on the inner side of the frame. The main beam is located in the hollow area and connected to the frame at both ends. The main beam includes a rotating part located on the first axis.

[0019] According to this application, by providing guide holes and a transmission part in the frame, the frame is connected to a transmission connector and a fastening part. The guide hole can be used to cooperate with the guide connector to transmit power between the guide connector and the frame, thereby driving the fastening part to move. The transmission part can be used to cooperate with the transmission connector to transmit power between the transmission connector and the frame. By providing a rotating part in the main beam, which is connected to the frame, the rotating frame can be supported on the cover body.

[0020] Optionally, the rotating frame includes at least one auxiliary beam, the two ends of which are connected to the main beam and the frame, respectively.

[0021] According to this application, by setting auxiliary beams, the number of connection points between the rotating part and the frame can be increased, which is beneficial for more evenly transmitting rotational force and can reduce or avoid the risk of fracture due to stress concentration in the connection area between the frame and the main beam. Moreover, the auxiliary beams can also support the main beam, making the main beam less prone to deformation and thus enhancing its strength.

[0022] Optionally, the guide holes and the fasteners are provided in multiple pairs at intervals along the circumference of the frame and correspond one-to-one. The frame includes a first transfer area and a second transfer area. The first transfer area is provided with the guide holes. The area of ​​the frame between two adjacent guide holes forms the second transfer area. One end of the auxiliary beam is connected to the main beam and the other end is connected to the first transfer area.

[0023] According to this application, by arranging the guide holes and fasteners at circumferential intervals along the frame and connecting the auxiliary beam between the first transmission area with the guide holes and the main beam, the uniformity of rotational force transmission can be further improved, and the potential for stress concentration and breakage caused by stress concentration in the connection area between the frame and the main beam can be further reduced or avoided.

[0024] Optionally, at least one of the opposite sides of the main beam is connected to two spaced-apart auxiliary beams, and the two auxiliary beams and the main beam form a first clearance space.

[0025] According to this application, by setting two spaced auxiliary beams on at least one side of the main beam, a first clearance space is formed to allow clearance from other solid structures within the cover assembly. This achieves the rotation function of the rotating frame while improving the space utilization rate along the thickness direction within the cover assembly, thereby helping to reduce the thickness of the cover assembly.

[0026] Optionally, the main beam and / or the auxiliary beam are provided with reinforcing ribs.

[0027] According to this application, by setting reinforcing ribs, the structural strength of the main beam and / or auxiliary beam can be enhanced.

[0028] Optionally, the main beam includes a main beam segment and a connecting segment. The main beam segment is connected to the connecting segment, and the connecting segment is connected to the frame. Along the axial direction of the inner cover, the main beam segment is higher than the connecting segment, and a second clearance space is formed below the main beam segment.

[0029] According to this application, by setting the main beam segment of the main beam higher than the connecting segment, two things are achieved: first, it limits the height of the connecting segment; second, it creates a second clearance space to accommodate the electric pressure relief device located below the main beam segment.

[0030] Optionally, the cover assembly further includes a limiting component, which is installed on the cover body and can move between a normal pressure position and a pressure position. The rotating frame includes a frame and a main beam. The frame includes the guide hole and the transmission part. A hollow area is provided on the inner side of the frame. The main beam is located in the hollow area and connected to the frame at both ends. The main beam is provided with limiting holes.

[0031] When the limiting component is in the pressure position, the limiting component can be inserted into the limiting hole and prevent the rotating frame from rotating; when the limiting component is in the normal pressure position, the limiting component is removed from the limiting hole and allows the rotating frame to rotate.

[0032] According to this application, when the cooking cavity is pressed up and the fastener is in the locked position, the limiting component can move to the pressed position, thereby inserting into the limiting hole and preventing the rotating frame from rotating. When the limiting component moves to the normal pressure position due to the decrease in pressure in the cooking cavity, the rotating frame is allowed to rotate, which facilitates moving the fastener to the unlocked position. Compared to placing the limiting hole in the frame, placing the limiting hole in the main beam reduces the impact on the structural strength and force transmission uniformity of the frame, while also reducing the impact of the limiting hole on the position setting of the guide hole and the transmission part in the frame.

[0033] Optionally, the rotating frame includes at least one auxiliary beam, the two ends of which are connected to the main beam and the frame respectively, and the limiting hole is provided at the junction of the auxiliary beam and the main beam.

[0034] According to this application, by setting the limiting hole at the junction of the auxiliary beam and the main beam, it helps to compensate for the strength of the main beam at the limiting hole, thereby ensuring the consistency of the structural strength of each part of the main beam.

[0035] Optionally, the guide hole further includes a positioning section, which is connected to the driving section. The extension trajectory of the positioning section is an arc centered on the first axis. When the fastening member is in the unlocked position or the locked position, the guide connector is located within the positioning section or at the junction of the positioning section and the driving section.

[0036] According to this application, by setting a positioning section, factors such as tolerances can be overcome and the rotating frame can continue to rotate, thereby ensuring that the guide connector connected to the fastener can reliably move to the end of the drive section or the position of the positioning section, and thus ensuring that the fastener can reach the locked position or the unlocked position. Moreover, when the fastener is in the locked position or the unlocked position, if the guide connector connected to the fastener is in the positioning section, the fastener can be held in the locked position or the unlocked position.

[0037] Optionally, the guide hole includes two positioning sections, namely a cover locking positioning section and a cover opening positioning section, and the two ends of the drive section are respectively connected to the cover locking positioning section and the cover opening positioning section, and the width of the cover locking positioning section and / or the cover opening positioning section is greater than the width of the drive section.

[0038] According to this application, when the guide connector is located in the lock cover positioning section, the latching member can be held in the locked position. When the guide connector is located in the unlocking positioning section, the latching member can be held in the unlocked position. By making at least one of the lock cover positioning section and the unlocking positioning section wider than the drive section, the guide connector can be moved more easily from the drive section to at least one of the lock cover positioning section and the unlocking positioning section, thereby reducing the probability of the guide connector getting stuck at the connection between the drive section and at least one of the lock cover positioning section and the unlocking positioning section, or even preventing it from getting stuck.

[0039] Optionally, the rotating frame includes a frame, and the guide holes and the fasteners are arranged in a plurality of one-to-one correspondences at circumferential intervals along the frame. The frame includes a first transfer area and a second transfer area. The first transfer area is provided with the guide holes, and the frame area between two adjacent guide holes forms the second transfer area. The width of the first transfer area in the radial direction centered on the first axis is greater than the width of the second transfer area.

[0040] According to this application, by setting the width of the first transmission area with guide holes in the frame to be wider than that of the second transmission area, the structural strength of the frame at the guide hole location can be improved, thereby ensuring that the structural strength of each part of the frame in the circumferential direction is more balanced, which helps to improve the stability and uniformity of the frame when transmitting force.

[0041] A second aspect of this application provides a cooking appliance, the cooking appliance comprising:

[0042] A pot body assembly, the pot body assembly including a snap-fit ​​edge;

[0043] The aforementioned lid assembly is closable and can be disposed on the pot body assembly. The fastener in the locked position locks to the inner lid and the fastening edge, and the fastener in the unlocked position unlocks the inner lid and the fastening edge.

[0044] According to the cooking appliance of the second aspect of this application, by applying the aforementioned lid assembly, when the fastener is in the locked position, the fastening edges of the inner lid and the pot body assembly can be locked, thereby preventing the lid assembly from being opened. When the fastener is in the unlocked position, the fastening edges of the inner lid and the pot body assembly can be unlocked, thereby allowing the lid assembly to be opened. Attached Figure Description

[0045] The following drawings, illustrating embodiments of this application, are incorporated herein by reference and are used to understand this application. The drawings illustrate embodiments of this application and their descriptions, serving to explain the principles of this application. In the drawings,

[0046] Figure 1 A cross-sectional view of a cooking appliance according to a preferred embodiment of this application;

[0047] Figure 2 for Figure 1 An exploded view of the cooking appliance shown;

[0048] Figure 3 A perspective view of a cooking appliance without a lid according to a preferred embodiment of this application;

[0049] Figure 4 for Figure 3 The image shows a top view of a cooking appliance without a lid, with the fasteners in the locked position;

[0050] Figure 5 for Figure 3 Another top view of the cooking appliance shown without the lid, with the fastener in the locked position;

[0051] Figure 6 for Figure 3Another top view of the cooking appliance shown without the lid, with the fastener in the unlocked position;

[0052] Figure 7 for Figure 1 A cross-sectional view of the cover assembly;

[0053] Figure 8 for Figure 3 A cross-sectional view of the lid assembly of a cooking utensil excluding the top cover;

[0054] Figure 9 for Figure 2 A three-dimensional view of the rotating frame in the middle;

[0055] Figure 10 for Figure 9 A cross-sectional view of the rotating frame shown;

[0056] Figure 11 for Figure 9 A top view of the rotating frame shown;

[0057] Figure 12 for Figure 9 The bottom view of the rotating frame shown;

[0058] Figure 13 for Figure 9 A schematic diagram showing the positional relationship between a guide hole of the rotating frame and the first axis.

[0059] Figure 14 This is a connection diagram of a drive motor, transmission connector, rotating frame, fastener, cover safety assembly, and button assembly according to a preferred embodiment of this application, wherein the fastener is in the locked position;

[0060] Figure 15 This is another connection diagram of the drive motor, transmission connector, rotating frame, fastening member, cover locking assembly, and button assembly according to a preferred embodiment of this application, wherein the fastening member is in the unlocked position; and

[0061] Figure 16 This is a schematic diagram of a portion of the structure of a fastener according to a preferred embodiment of this application.

[0062] Explanation of reference numerals in the attached figures:

[0063] 10: Pot body components 101: Pot inner pot

[0064] 102: Middle frame 103: Button component

[0065] 104: Lid opening torsion spring; 107: Base

[0066] 11: Cover assembly 110: Cover body

[0067] 1101: Steam passage; 111: Cover

[0068] 1111: Faceplate body 11111: First receiving cavity

[0069] 1112: Panel 112: Liner

[0070] 113: Inner cover; 1131: Inner cover sealing ring

[0071] 114: Steam valve; 116: Control circuit board

[0072] 120: Electric pressure relief device; 130: Cover locking and opening assembly

[0073] 131: Fastening component; 1312: First fastening part

[0074] 1313: Second fastening part; 1314: Connecting part

[0075] 132: Rotating frame; 1320: Frame

[0076] 1321: Guide hole; 13211: Drive section

[0077] 13212: Locking cover positioning section; 13213: Opening cover positioning section

[0078] 13215: External circumferential reinforcement; 13216: Internal circumferential reinforcement

[0079] 13217: Ring reinforcement; 1322: Main beam

[0080] 13221: First connecting section; 13222: First supporting section

[0081] 13223: First main beam segment; 13224: Rotating part

[0082] 13225: Second main beam segment; 13226: Second support segment

[0083] 13227: Second connecting section; 13228: Main beam reinforcement.

[0084] 13229: Main beam segment; 13230: Connecting segment

[0085] 13231: Auxiliary beam; 1323: Trigger element

[0086] 1324: Transmission section; 1325: Transmission boss

[0087] 13201: Second clearance space; 13202: First clearance gap

[0088] 13204: Avoidance gap; 13205: First auxiliary beam

[0089] 13206: Second auxiliary beam; 13207: Third auxiliary beam

[0090] 13208: Fourth auxiliary beam; 13209: Limiting hole

[0091] 133: Transmission connector; 1331: Connecting shaft

[0092] 134: Drive motor; 136: Float component

[0093] 137: Guide connector; 1371: Screw

[0094] 1372: Stud; 1373: Washer

[0095] 140: Position detection device; 141: Locked position detection device

[0096] 142: Unlock position detection device; 160: Cover locking assembly

[0097] P1: First extreme position P2: Second extreme position

[0098] AX: Rotation axis; AX1: First axis

[0099] AX2: Second axis; R1: First direction of rotation

[0100] R2: Second rotation direction; Pt1: First center point

[0101] Pt2: Second center point; Pt3: Third center point

[0102] Pt4: Fourth center point; Tg: Tangent.

[0103] D1: Forward / backward direction; D2: Left / right direction.

[0104] D3: Height direction Detailed Implementation

[0105] In the following description, numerous specific details are set forth to provide a more thorough understanding of this application. However, it will be apparent to those skilled in the art that embodiments of this application may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described to avoid confusion with embodiments of this application.

[0106] To fully understand the embodiments of this application, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this application is not limited to the specific details familiar to those skilled in the art.

[0107] It should be understood that the terminology used herein is intended only to describe particular embodiments and is not intended to limit the scope of this application. The singular forms “a,” “an,” and “the” / “the” are also intended to include the plural forms unless the context clearly indicates otherwise. When the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0108] The ordinal numbers such as "first" and "second" used in this application are merely identifiers and have no other meaning, such as a specific order. Furthermore, for example, the term "first component" does not imply the existence of a "second component," and the term "second component" does not imply the existence of a "first component." It should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and similar expressions used in this application are for illustrative purposes only and are not intended to be limiting.

[0109] The terms “parallel” / “perpendicular” and similar expressions used in this application include absolute parallel / perpendicular relationships and approximately parallel / perpendicular relationships (e.g., relationships that differ from absolute parallel / perpendicular relationships by a range of -5° to +5°), and have equivalent effects.

[0110] The specific embodiments of this application will be described in more detail below with reference to the accompanying drawings, which illustrate representative embodiments of this application and are not intended to limit this application.

[0111] like Figures 1 to 16 As shown, this application provides a cooking appliance. The cooking appliance of this application can be an electric pressure cooker, electric slow cooker, electric hot pot, soy milk maker, blender, or other electric cooking appliances. The cooking appliance may include a cooker body assembly 10, a lid assembly 11, and a control unit.

[0112] The pot body assembly 10 is used for cooking food. The lid assembly 11 is used to close the pot body assembly 10. For example, the lid assembly 11 is connected to the pot body assembly 10 in an openable and closable manner to close the pot body assembly 10. When the lid assembly 11 closes the pot body assembly 10, a cooking space is formed between the lid assembly 11 and the pot body assembly 10.

[0113] The pot body assembly 10 includes a pot inner 101, a middle frame 102, a heating device (not shown), a base 107, and an internal environment parameter detection device (not shown). The pot inner 101, used to hold food, is removably installed within the pot body assembly 10. The middle frame 102 can be referred to as a heat insulation cover. The middle frame 102 is located between the outer circumferential side of the pot inner 101 and the base 107 and is fixed to the base 107, suitable for positioning the pot inner 101 and also serving a heat insulation function. When the lid assembly 11 closes the pot body assembly 10, a cooking space is formed between the lid assembly 11 and the pot inner 101. The cooking space can also be referred to as a cooking cavity. The heating device is located at the bottom of the pot body assembly 10 and below the pot inner 101 to heat the food in the pot inner 101. The internal environment parameter detection device is used to detect the temperature or pressure of the cooking space or related to the cooking space. The temperature or pressure here can be instantaneous temperature or instantaneous pressure. The internal environment parameter detection device can be a temperature detection device. The temperature detection device may include a bottom temperature detection device and a top temperature detection device. The bottom temperature detection device may be located at the bottom or side of the pot body assembly 10. The bottom temperature detection device is used to directly or indirectly detect the temperature at the bottom of the cooking space. The top temperature detection device is located, for example, in the lid assembly 11, and is used to detect the temperature at the top of the cooking space. Both the heating device and the temperature detection device are electrically connected to the control unit. The temperature detection device feeds back the sensed temperature information to the control unit, so that the control unit can perform more precise control on devices such as the heating device based on the temperature information. The control unit can determine the instantaneous air pressure based on the received temperature information by looking up a table or other means, thereby converting the instantaneous temperature into air pressure. In other examples, the internal environment parameter detection device may also be an air pressure detection device. The air pressure detection device is used to directly detect the air pressure within the cooking space.

[0114] The control unit can be located on the control circuit board 116. The control circuit board 116 can also house electrical structures such as digital display devices, buzzers, and circuits. The control unit can be a micro control unit (MCU) used to control the cooking of the cooking appliances.

[0115] In this application, one end of the lid assembly 11 in the front-rear direction D1 is rotatably connected to the pot body assembly 10 via a pivot shaft about the rotation axis AX. An opening torsion spring 104 is disposed on the pivot shaft, with its two ends connected to the lid assembly 11 and the pot body assembly 10 respectively, allowing the opening torsion spring 104 to apply an elastic torsional force away from the pot body assembly 10 to the lid assembly 11. When the lid assembly 11 is opened, it springs upward under the elastic torsional force of the opening torsion spring 104 and rotates about the pivot shaft. The other end of the lid assembly 11 in the front-rear direction D1 is detachably connected to the pot body assembly 10 via a lid locking assembly 160 and a button assembly 103.

[0116] See Figure 2 The lid assembly 11 includes a lid body 110 and components such as electrical components and valves. The lid body 110 includes a face cover 111, a liner 112, and an inner cover 113. The face cover 111 is located on the outermost (uppermost) side of the lid assembly 11, forming the outer shell of the lid assembly 11. The liner 112 is located below and connected to the face cover 111. For example, the liner 112 can be connected to the face cover 111 via fasteners, snap-fit ​​connectors, or other connectors. The liner 112 is mainly used to centrally mount various functional components of the lid assembly 11 that sense and control the working status of the cooking appliance, such as sensors. The inner cover 113 is located on the innermost (lowermost) side of the lid assembly 11, and is located below the liner 112. The inner cover 113 is detachably connected to the liner 112 via detachable connectors such as snap-fit ​​connectors for easy cleaning and replacement. The inner cover 113 faces the cooking space. When the lid assembly 11 is closed on the pot body assembly 10, the inner lid 113 is located directly above the cooking space. An inner lid sealing ring 1131 is provided on the outer periphery of the inner lid 113. The inner lid sealing ring 1131 is used to seal the gap between the inner lid 113 and the pot body 101 when the inner lid 113 is closed with the pot body 101.

[0117] Furthermore, the aforementioned cover 111 may include a cover body 1111 and a panel 1112. The cover body 1111 is located on the side of the panel 1112 closer to the liner 112 in the thickness direction of the cover assembly 11. In one example, a first receiving cavity 11111 is formed between the cover body 1111 and the panel 1112. The first receiving cavity 11111 can accommodate electrical structures such as a control circuit board 116. The first receiving cavity 11111 may be formed by a partial recess on the upper surface of the cover body 1111, and correspondingly, a partial bulge is formed on the lower surface of the cover body 1111.

[0118] For example, the cover assembly 11 includes a steam valve 114. The steam valve 114 has a steam vent (not shown in the figure) that communicates with the outside environment. The cover assembly 11 also contains a steam passage 1101 that communicates with the steam valve 114. The cooking space is connected to the external environment through the steam passage 1101 and the steam valve 114. The external environment refers to the environment outside the cooking appliance. In this application, the steam valve 114 is used to connect the cooking space to the external environment to release steam generated during cooking. The cover assembly 11 also includes an electrically operated pressure relief device 120 arranged corresponding to the steam passage 1101. The electrically operated pressure relief device 120 is electrically connected to a control unit and can be controlled to switch between an open state (open steam passage 1101) and a closed state (closed steam passage 1101).

[0119] To reduce heat loss during cooking, the pot body assembly 10 includes the aforementioned heat insulation cover, such as... Figure 2As shown. In this design, the fastening element 131 can engage with the edge of the inner pot 101 or the edge of the insulation cover. The edge of the inner pot 101 or the edge of the insulation cover can be referred to as the fastening edge. For example, in a rice cooker, the fastening element 131 can engage with the edge of the inner pot 101. For example, in an electric pressure cooker, the edge of the insulation cover is at least partially exposed, and the fastening element 131 can engage with the edge of the insulation cover. For ease of explanation, the following description will focus on the fastening element 131 engaging with the edge of the inner pot 101.

[0120] The cooking appliance may also include a locking / unlocking assembly 130 and a drive mechanism. The locking / unlocking assembly 130 is connected to the drive mechanism to switch between a locked and unlocked state under the drive's actuation. In the locked state, the locking / unlocking assembly 130 prevents the inner lid 113 from separating from the inner pot 101. In the unlocked state, the locking / unlocking assembly 130 allows the inner lid 113 to separate from the inner pot 101. The inner lid 113 has a radial direction and an axial direction. The radial direction is the radial direction of a circle centered on the geometric center of the inner lid 113. The axial direction is a direction passing through the geometric center of the inner lid 113 and parallel to the thickness direction of the inner lid 113. Here, the geometric center of the inner lid 113, in the example where the inner lid 113 is circular, is the exact center or center of the circle of the inner lid 113. The locking / unlocking assembly 130 includes a fastening element 131. The fastening member 131 is movably connected to the lid body 110 in a locked position and an unlocked position along the radial direction of the inner lid 113. The lid-opening assembly 130 is locked when the fastening member 131 is in the locked position. The lid-opening assembly 130 is unlocked when the fastening member 131 is in the unlocked position. The fastening member 131 may include a clamping opening for receiving the edges of the inner pot 101 and the inner lid 113. When the fastening member 131 is in the locked position, the edges of the inner pot 101 and the inner lid 113 are clamped in the clamping opening to limit the inner pot 101 and the inner lid 113 in the height direction D3 of the pressure cooker, thereby preventing the inner pot 101 and the inner lid 113 from disengaging from each other, thus ensuring that the cooking space can be pressurized. When the fastening member 131 is in the unlocked position, the clamping opening disengages from at least one of the edges of the inner pot 101 and the inner lid 113. Preferably, the fastening member 131 in the unlocked position disengages from the inner pot 101. The driving component can be a drive motor 134, a cylinder, an electric cylinder, or the like. Taking the drive motor 134 as an example, the motor shaft of the drive motor 134 is connected to the fastening member 131. The drive motor 134 is connected to the control unit to drive the fastening member 131 to move between the locked position and the unlocked position under the control of the control unit.

[0121] See Figures 14 to 16For example, the fastening member 131 may include a first fastening portion 1312, a second fastening portion 1313, and a connecting portion 1314. The connecting portion 1314 is connected between the first fastening portion 1312 and the second fastening portion 1313. Specifically, both ends of the connecting portion 1314 are respectively connected to the ends of the first fastening portion 1312 and the second fastening portion 1313 that are away from the cooking space. The first fastening portion 1312, the second fastening portion 1313, and the connecting portion 1314 together form a clamp with an opening facing the first axis AX1. The clamp is used to accommodate the edge of the inner cover 113 and the edge of the pot liner 101. The first fastening portion 1312 is used to restrict the upward movement of the inner cover 113 when pressed in the cooking space. The second fastening portion 1313 is used to restrict the downward movement of the pot liner 101 when pressed in the cooking space.

[0122] Optionally, in the radial direction of the inner lid 113, the first fastening portion 1312 is longer than the second fastening portion 1313. In other words, when the lid assembly 11 is fitted onto the pot assembly 10, in the projection plane perpendicular to the height direction D3 of the cooking appliance, the orthographic projection of the first fastening portion 1312 is closer to the first axis AX1 than the orthographic projection of the second fastening portion 1313. Furthermore, at least the end of the first fastening portion 1312 away from the connecting portion 1314 is located directly above the inner lid 113, thereby preventing the fastening member 131 from jamming with the inner lid 113 during movement towards the locked position. When the lid assembly 11 is fitted onto the pot assembly 10, the second fastening portion 1313 is aligned with the lower edge of the inner pot 101 to prevent the fastening member 131 from jamming with the edge of the inner pot 101 during movement towards the locked position.

[0123] Furthermore, the cover opening assembly 130 may also include a rotating frame 132 and a guide connector 137. The rotating frame 132 is rotatably connected to the cover body 110 about a first axis AX1. The rotating frame 132 may include a guide hole 1321. The extension direction of the guide hole 1321 intersects the radial direction of the inner cover 113. The extension trajectory of the guide hole 1321 may be a straight line, a curve, or a combination of both. The extension direction has at least a portion inclined to the radial direction of the inner cover 113, thereby enabling the drive engagement member 131 to move radially in the inner cover 113. The engagement member 131 is connected to the guide hole 1321 via the guide connector 137. The rotating frame 132 is driveably connected to the motor shaft of the drive motor 134. During the process of the drive motor 134 driving the rotating frame 132 to rotate, the fastening member 131 slides relative to the rotating frame 132 along the extension direction of the guide hole 1321 through the sliding engagement of the guide connector 137 and the guide hole 1321, thereby causing the fastening member 131 to be driven by the rotating frame 132 to move in the radial direction of the inner cover 113.

[0124] The guide connector 137 includes a screw 1371, a stud 1372, and a washer 1373. The stud 1372 is fixedly connected to the fastener 131. For example, the stud 1372 and the fastener 131 are integrally formed. The fastener 131 is located in the lower groove of the cover 112. The cover 112 has a guide hole. The guide hole extends radially in the inner cover 113 and communicates with the groove. The stud 1372 passes sequentially through the guide hole and the guide hole 1321 and is connected to the screw 1371. The washer 1373 is installed between the non-threaded end of the screw 1371 and the rotating bracket 132.

[0125] Furthermore, the cover opening / closing assembly 130 may also include a drive transmission assembly. The drive transmission assembly is connected between the rotating frame 132 and the motor shaft of the drive motor 134 to transmit power that causes the rotating frame 132 to rotate. The drive transmission assembly includes a transmission connector 133. The transmission connector 133 has a rotation center and a free end. The rotation center is rotatably connected to the cover assembly 11 about a second axis AX2. The rotation center is connected to the motor shaft of the drive motor 134 to rotate synchronously with the motor shaft. The free end is movably connected to the rotating frame 132. The second axis AX2 is parallel to the first axis AX1. During the rotation of the motor shaft of the drive motor 134, the transmission connector 133 rotates in the same direction as the motor shaft of the drive motor 134. During the rotation of the motor shaft of the drive motor 134, the rotation direction of the transmission connector 133 is opposite to the rotation direction of the rotating frame 132. Figure 4 As shown, the motor shaft has a first rotation direction R1 and a second rotation direction R2. The first rotation direction R1 and the second rotation direction R2 are opposite. The first rotation direction R1 can be understood as counterclockwise. Correspondingly, the second rotation direction R2 can be understood as clockwise. During the rotation of the transmission connector 133 along the motor shaft in the first rotation direction R1, the rotating frame 132 rotates in the second rotation direction R2, which is opposite to the first rotation direction R1, causing the fastening member 131 to move towards the locked position. During the rotation of the transmission connector 133 along the motor shaft in the second rotation direction R2, the rotating frame 132 rotates in the first rotation direction R1, causing the fastening member 131 to move towards the unlocked position.

[0126] See Figures 3 to 8 ,as well as Figure 14 and Figure 15Optionally, the rotating frame 132 is provided with a trigger 1323. The position detection device 140 includes a locking position detection device 141 corresponding to the locked position and an unlocking position detection device 142 corresponding to the unlocked position. The locking position detection device 141 is used to detect the locking position signal. The unlocking position detection device 142 is used to detect the unlocking position signal. Optionally, the locking position detection device 141 is located on one side of the trigger 1323 in the circumferential direction around the first axis AX1. The unlocking position detection device 142 is located on the other side of the trigger 1323 in the circumferential direction around the first axis AX1. The trigger 1323 is protrudingly provided on the edge of the rotating frame 132. The drive motor 134 can drive the transmission connecting member 133 to rotate along the second rotation direction R2 to the first limit position P1, thereby causing the rotating frame 132 to rotate to the position shown in the figure. Figure 6 The third extreme position is shown, which causes the fastener 131 to move to the unlocked position. When the rotating frame 132 rotates to the third extreme position, the trigger 1323 on the rotating frame 132 is detected by the unlocked position detection device 142, thereby generating an unlocked position signal and sending it to the control unit. The control unit determines that the fastener 131 is in the unlocked position based on the unlocked position signal. The drive motor 134 can drive the transmission connecting member 133 to rotate along the first rotation direction R1 to the second extreme position P2, thereby causing the rotating frame 132 to rotate to the third extreme position. Figure 4 and Figure 5 The fourth extreme position shown causes the fastener 131 to move to the locked position. When the rotating frame 132 rotates to the fourth extreme position, the trigger 1323 on the rotating frame 132 is detected by the locking position detection device 141, thereby generating a locking position signal and sending it to the control unit. The control unit determines that the fastener 131 is in the locked position based on the locking position signal. The locking position detection device 141 and the unlocking position detection device 142 can each be composed of position sensors such as microswitches, reed switches, optocouplers, and capacitive sensors. The position sensors selected for the locking position detection device 141 and the unlocking position detection device 142 can be the same or different. The locking position detection device 141 and the unlocking position detection device 142 can be fixed to the cover 112 by means of snap-fit, heat fusion, or screws. The cooking appliance can be equipped with either the locking position detection device 141 or the unlocking position detection device 142. In the example where the cooking appliance is equipped with only one position detection device, the locking position detection device 141 is preferably provided.

[0127] Optionally, the drive motor 134 is located at one end of the cover assembly 11 in the front-rear direction D1, near the rotation axis AX. The drive motor 134 is also located in the middle of the cover assembly 11 in the left-right direction D2. The locking position detection device 141 and the unlocking position detection device 142 are located at one end of the cover assembly 11 in the left-right direction D2, particularly on the same side of the cover assembly 11 as the drive motor 134 in the left-right direction D2.

[0128] In other examples not shown, the locking position detection device 141 and the unlocking position detection device 142 are located on both sides of the drive motor 134 in the left-right direction D2 of the cover assembly 11.

[0129] See Figures 2 to 10 Furthermore, the rotating frame 132 is provided with a transmission section 1324. The transmission connector 133 also has a connecting shaft 1331. The connecting shaft 1331 is inserted into the transmission section 1324. The transmission section 1324 provides a clearance that allows the connecting shaft 1331 to move radially relative to the rotating frame 132. For example, the transmission section 1324 can be configured as an elongated hole extending radially in a circle centered on the first axis AX1, to allow the connecting shaft 1331 to move within the transmission section 1324, thereby preventing jamming of the rotation of the rotating frame 132 and the rotation of the transmission connector 133. The transmission section 1324 can be a through hole or a blind hole. The transmission section 1324 is located at the edge of the rotating frame 132. While the connecting shaft 1331 drives the rotating frame 132 to rotate, it can slide or move within the transmission section along the length direction of the transmission section 1324. The transmission section 1324 and the aforementioned trigger member 1323 are arranged circumferentially around the first axis AX1.

[0130] It is understandable that in other examples, the positions of the transmission part and the connecting shaft can be interchanged; that is, the transmission part can be set in the transmission connector, and the connecting shaft can be set in the rotating frame.

[0131] See Figures 3 to 6 , Figure 9 , Figure 11 , Figure 12 as well as Figure 14 and Figure 15In addition, the rotating frame 132 also includes a drive boss 1325. The drive boss 1325 has an engaged state that engages with the lid locking assembly 160 and a disengaged state that is separated from the lid locking assembly 160. In the engaged state, the drive boss 1325 prevents external force from successfully pressing the button assembly 103, thereby preventing the lid assembly 11 from being opened. In the disengaged state, the drive boss 1325 allows external force to successfully press the button assembly 103, thereby allowing the lid assembly 11 to be opened under the elastic force of the lid opening torsion spring 104. Specifically, when the lid assembly 11 is closed on the pot body assembly 10, when the rotating frame 132 rotates in the second rotation direction R2 (the motor shaft rotates in the first rotation direction R1) to the fourth limit position, the fastener 131 moves to the locked position, and the drive boss 1325 engages with the lid locking assembly 160. With the lid assembly 11 closed on the pot body assembly 10, when the rotating frame 132 rotates along the first rotation direction R1 (the motor shaft rotates in the second rotation direction R2) to the third limit position, the fastening member 131 moves to the unlocked position, and the transmission boss 1325 separates from the lid locking assembly 160. It should be noted that the angle at which the rotating frame 132 rotates from the third limit position to the fourth limit position is less than or equal to the central angle of the guide hole 1321 on the circle centered on the first axis AX1. The central angle of the transmission boss 1325 on the circle centered on the first axis AX1 can be less than or equal to the central angle of the guide hole 1321.

[0132] Embodiments of this application provide a cover assembly 11 for a cooking appliance. The cover assembly 11 and the cooking appliance having it will now be described in detail with reference to the accompanying drawings.

[0133] See Figures 1 to 16The lid assembly 11 according to an embodiment of this application includes not only the lid body 110, fastening member 131, rotating frame 132, transmission connector 133, guide connector 137, and driving member described above. The rotating frame 132 is rotatable relative to the lid body 110 about a first axis AX1. The first axis AX1 is parallel to or nearly parallel to the thickness direction of the lid assembly 11. When the lid assembly 11 is closed onto the pot body assembly 10, the thickness direction is consistent with the height direction D3 of the pot body assembly 10. The edge of the rotating frame 132 has a transmission portion 1324. The rotating frame 132 includes a guide hole 1321. The guide connector 137 is slidably connected along the guide hole 1321. The guide hole 1321 includes a driving segment 13211 extending along a preset driving trajectory. The radial dimension of the driving segment 13211 is equal to the maximum radial distance of the fastening member 131. The angle between the tangent of any point on the drive trajectory to the circle centered on the first axis AX1 and the line connecting the two ends of the drive trajectory is α. α ≠ 0° and α ≠ 90°. The transmission connector 133 is rotatably connected to the cover body 110 about a second axis AX2 parallel to the first axis AX1. The transmission connector 133 is connected to the transmission part 1324 and drives the rotating frame 132 to rotate. The drive member is connected to the transmission connector 133 and can drive the transmission connector 133 to rotate.

[0134] The drive segment 13211 has a first end and a second end. The distance between the first end of the drive segment 13211 and the first axis AX1 is less than the distance between the second end of the drive segment 13211 and the first axis AX1. During the rotation of the rotating frame 132 about the first axis AX1 in a first rotation direction R1, the guide connector 137 moves toward the second end of the drive segment 13211, causing the fastener 131 to move toward the unlocked position. During the rotation of the rotating frame 132 about the first axis AX1 in a second rotation direction R2, the guide connector 137 moves toward the first end of the drive segment 13211, causing the fastener 131 to move toward the locked position. The first rotation direction R1 is opposite to the second rotation direction R2. Viewed from a top view of the cover assembly 11, the first rotation direction R1 can be counterclockwise, and the second rotation direction R2 can be clockwise.

[0135] According to the embodiment of the present application, the cover assembly 11 has a radial dimension of the drive segment 13211 equal to the maximum radial distance of the fastening member 131, and the angle between the line connecting the tangent of the circle centered on the first axis AX1 at any point on the drive trajectory and the two ends of the drive trajectory is α, where α ≠ 0° and α ≠ 90°. This reduces the tangential reaction force of the fastening member on the rotating frame, i.e., reduces the tangential resistance of the fastening member on the rotating frame, thereby reducing the torque required when the rotating frame is driven, and thus helps to reduce the driving force requirement of the drive member. In addition, the drive member is indirectly connected to the rotating frame 132 through the transmission connector 133, which improves the flexibility of the drive member in terms of arrangement position.

[0136] In this embodiment, the driving component is the aforementioned drive motor 134. The transmission connector 133 has a structure similar to a crank or cam. When the drive motor 134 is working, the motor shaft drives the transmission connector 133 to rotate around the axis of the motor shaft, causing the end of the transmission connector 133 away from the motor shaft to oscillate around the axis of the motor shaft, thereby driving the rotating frame 132 to rotate. The rotation direction of the motor shaft is opposite to the rotation direction of the rotating frame 132. The axis of the motor shaft is the second axis AX2.

[0137] In other examples, the driving component can be a cylinder, electric cylinder, or other similar drive mechanism. The transmission connection can be a crank-rocker mechanism or similar structure found in a four-bar linkage.

[0138] Optionally, 0° < α ≤ 45°. This means that α can be any value other than 45° within the range of 0° < α ≤ 45°. For example, α can be 5°, 8°, 12°, 15°, 19°, 27°, 35°, 40°, etc.

[0139] According to this application, by setting the range of the included angle α to 0°<α≤45°, the reaction force of the fastening member 131 on the rotating frame 132 in the tangential direction can be further reduced, thereby further reducing the torque required for the rotating frame 132 when it is driven, and further reducing the driving force requirement of the driving member. Taking the drive motor 134 as an example, the driving force of the driving member can be understood as the output torque.

[0140] Further optionally, 10°≤α≤30°.

[0141] According to this application, since the radial movement distance of the fastening member 131 is linearly related to the length of the drive section 13211, if the radial movement distance of the fastening member 131 is constant, a small α will lead to an increase in the length of the drive section 13211. A lower limit for α is defined here to prevent the length of the drive section 13211 from becoming excessive, thereby ensuring that the structural strength of the rotating frame 132 at the guide hole 1321 is not too small. By further defining the upper limit of α as 30°, compared to an upper limit of α of 30°, the resistance of the fastening member 131 on the rotating frame 132 during rotation can be further reduced, thereby further reducing the torque required when the rotating frame 132 is driven, and further reducing the output power requirements of the drive member. In short, by setting the included angle α to a range of 0°<α≤30°, the reaction force of the fastening member 131 on the rotating frame 132 in the tangential direction can be further reduced, thereby further reducing the torque required when the rotating frame 132 is driven, and further reducing the driving force requirement of the driving member.

[0142] Preferably, α = 23.6°.

[0143] It is understandable that α can be selected from the range of 10°≤α≤30°, other than 10°, 23.6°, and 30°. For example, α can be 20°, 21°, 22°, 23°, 24°, 25°, 26°, etc.

[0144] The following will be referred to Figure 11 The relationship between the included angle α and the torque required for the rotating frame 132 to rotate is further explained.

[0145] For example, let F be the normal force exerted by the guide connector 137 of the fastening member 131 on the rotating frame 132 in the driving section 13211. The reaction force F1 of the fastening member 131 on the rotating frame 132 along the tangent Tg is equal to F*sinα. Therefore, the smaller α is, the smaller the reaction force F1 of the fastening member 131 on the rotating frame 132, and the smaller the resistance of the fastening member 131 to the rotating frame 132. The distance between the guide connector 137 and the first axis AX1 is L1.

[0146] At the connection between the rotating frame 132 and the transmission connector 133, the tangential force exerted by the transmission connector 133 on the rotating frame 132 is denoted as F2, and the distance from the part of the transmission connector 133 connecting the rotating frame 132 to the first axis AX1 is denoted as L2. Therefore, the torque transmitted from the drive motor 134 to the rotating frame 132 via the transmission connector 133 is F2*L2. To achieve the rotation of the rotating frame 132, F2*L2 can be close to but greater than F1*L1.

[0147] As can be seen from the above analysis, a smaller α is more advantageous for selecting a drive motor 134 with lower output torque, thereby reducing costs. At the same time, it is also beneficial to extend the service life of at least one of the drive motor 134, transmission connector 133, rotating frame 132, and fastening member 131.

[0148] In some pressure cooking appliances, the motor assembly is arranged correspondingly to the portion within the outer contour of the rotating frame. The motor assembly is connected to the rotatable rotating frame via a transmission connector to drive the rotating frame to reciprocate, thereby locking and unlocking the lid assembly and the pot body assembly. However, because the distance between the motor assembly and the rotation center of the rotating frame is less than the radius of the rotating frame's rotation trajectory, the motor assembly needs to output a large torque to drive the rotating frame to rotate. This necessitates the selection of a motor assembly with a large output torque, thus increasing the cost of the cooking appliance. Furthermore, the dimension of the rotating frame transmission structure in the thickness direction of the lid is large, increasing the thickness of the lid. Moreover, the transmission structure is heavy, so the transmission structure and even the rotating frame 132 connected to it are prone to damage after a long period of time.

[0149] See Figure 3 , Figure 4 , Figure 14 as well as Figure 15 To address the aforementioned issues, a drive component is positioned radially along the inner cover 113 on the outer side of the rotating frame 132. The drive component is a drive motor 134. The axis of the motor shaft of the drive motor 134 coincides with the second axis AX2. The distance between the first axis AX1 and the second axis AX2 is greater than the radius of the rotation trajectory of the rotating frame 132.

[0150] According to the embodiments of this application, by arranging the drive motor 134 on the outside of the rotating frame 132 along the radial direction of the inner cover 113, the lever arm of the driving force provided by the drive motor 134 at the rotating frame 132 can be increased, thereby reducing the output torque provided by the drive motor. This helps to reduce the cost requirements for the selection of the drive motor 134, and also facilitates the arrangement of the positions of various parts in the cover assembly 11.

[0151] See Figures 9 to 15 For example, the rotating frame 132 includes a frame 1320 and a main beam 1322. The frame 1320 includes a guide hole 1321 and a transmission part 1324. A hollow area is provided on the inner side of the frame 1320. The frame 1320 may be an annular frame structure. The main beam 1322 is located in the hollow area and is connected to the frame 1320 at both ends. The main beam 1322 includes a rotating part 13224 located on the first axis AX1.

[0152] According to this application, by providing a guide hole 1321 and a transmission part 1324 in the frame 1320, the frame 1320 is connected to the transmission connector 133 and the fastening member 131. The guide hole 1321 can cooperate with the guide connector 137 to transmit power between the guide connector 137 and the frame 1320, thereby driving the fastening member 131 to move. The transmission part 1324 can cooperate with the transmission connector 133 to transmit power between the transmission connector 133 and the frame 1320. The transmission part 1324 is provided with reinforcing ribs protruding from the frame to extend the service life of the transmission part 1324.

[0153] Optionally, the rotating frame 132 includes at least one auxiliary beam 13231. The two ends of the auxiliary beam 13231 are connected to the main beam 1322 and the frame 1320, respectively.

[0154] According to this application, by providing the auxiliary beam 13231, the number of connection points between the rotating part 13224 and the frame 1320 can be increased, which is beneficial for more evenly transmitting rotational force and can reduce or avoid the risk of stress concentration and fracture in the connection area between the frame 1320 and the main beam 1322. Moreover, the auxiliary beam 13231 can also support the main beam 1322, making the main beam 1322 less prone to deformation, thereby enhancing the strength of the main beam 1322.

[0155] For example, at least one of the opposite sides of the main beam 1322 is connected to two spaced-apart auxiliary beams 13231. The two auxiliary beams 13231 and the main beam 1322 form a first clearance space 13202. The first clearance space 13202 may be provided only on one side of the main beam 1322. The first clearance space 13202 can be used to avoid a first member to be avoided or a second member to be avoided. The first clearance space 13202 may be provided on both sides of the main beam 1322 to avoid the first member to be avoided and the second member to be avoided, respectively. The first member to be avoided is a steam valve 114. The second member to be avoided is a first receiving cavity 11111.

[0156] According to this application, by providing two spaced auxiliary beams 13231 on at least one side of the main beam 1322, a first clearance space is formed to allow clearance from other solid structures within the cover assembly 11. This achieves the rotation function of the rotating frame 132 while improving the space utilization rate along the thickness direction within the cover assembly 11, thereby helping to reduce the thickness of the cover assembly 11.

[0157] For example, the main beam 1322 is provided with reinforcing ribs. Alternatively, the auxiliary beam 13231 is provided with reinforcing ribs. Both the main beam 1322 and the auxiliary beam 13231 are provided with reinforcing ribs. The reinforcing ribs may extend entirely along the axial direction of the inner cover 113. Alternatively, a portion of the reinforcing rib may extend along the axial direction of the inner cover 113, and another portion may extend along the radial direction or other directions of the inner cover 113.

[0158] According to this application, by setting reinforcing ribs, the structural strength of the main beam 1322 and / or auxiliary beam 13231 can be enhanced.

[0159] See Figure 5 , Figure 6 , Figure 9 as well as Figure 12 For example, the main beam 1322 includes a main beam segment 13229 and a connecting segment 13230. The main beam segment 13229 is connected to the connecting segment 13230. The connecting segment 13230 is connected to the frame 1320. Along the axial direction of the inner cover 113, the main beam segment 13229 is higher than the connecting segment 13230. A second clearance space is formed below the main beam segment 13229. The second clearance space is adapted to avoid the electric pressure relief device 120.

[0160] According to this application, the main beam segment 13229 of the main beam 1322 is higher than the connecting segment 13230. This serves two purposes: first, it provides a height limit for the connecting segment 13230, reducing the risk of upward deformation of the connecting segment 13230; second, it creates a second clearance space to accommodate the electric pressure relief device 120 located below the main beam segment 13229.

[0161] See Figures 3 to 6 as well as Figures 9 to 15Exemplarily, the cover assembly 11 also includes a limiting component. The limiting component is mounted on the cover body 110. The limiting component is movable between a normal pressure position and a pressurized position. The rotating frame 132 includes a frame 1320 and a main beam 1322. The frame 1320 includes a guide hole 1321 and a transmission part 1324. A hollow area is provided on the inner side of the frame 1320. The main beam 1322 is located in the hollow area and its two ends are connected to the frame 1320. The main beam 1322 is provided with limiting holes 13209. When the limiting component is in the pressurized position, the limiting component can be inserted into the limiting hole 13209 and prevent the rotating frame 132 from rotating. When the limiting component is in the normal pressure position, the limiting component retracts from the limiting hole 13209 and allows the rotating frame 132 to rotate. The pressurized position here can be understood as the position after the limiting component has moved upward under the influence of a larger air pressure within the cooking space. When the rotating bracket 132 is in the locked position, the limiting component in the normal pressure position retracts from the limiting hole 13209 to allow the rotating bracket 132 to rotate. The normal pressure position here can be understood as the position where the limiting component returns to its normal position after the gas pressure in the cooking space returns to normal. Of course, the limiting hole 13209 can be located in other positions on the frame 1320 or the rotating bracket 132, and is not limited to one method. The limiting component can be, for example, a float component 136, a solenoid valve, etc. Preferably, the limiting component is a float component 136.

[0162] According to this application, when the cooking cavity is pressed up and the fastener 131 is in the locked position, the limiting component can move to the pressed position, thereby inserting into the limiting hole 13209 and preventing the rotating frame 132 from rotating, thus making it difficult for the fastener 131 to move. When the limiting component moves to the normal pressure position due to the decrease in pressure in the cooking cavity, the rotating frame 132 is allowed to rotate, which facilitates moving the fastener 131 to the unlocked position. Compared to setting the limiting hole 13209 on the frame, setting the limiting hole 13209 on the main beam 1322 can reduce the impact on the structural strength and force transmission uniformity of the frame 1320, and at the same time reduce the impact of the limiting hole 13209 on the distribution position of the guide hole 1321 and the transmission part 1324 on the frame 1320.

[0163] Optionally, the float component 136 is movably mounted on the liner 112 or other fixed structure of the cover body 110 of the cover assembly 11. The cover body 110 includes the liner 112. The following description uses an example where the float component 136 is movably mounted on the liner 112. The liner 112 has a float mounting hole (not shown). The float component 136 is mounted in the float mounting hole. The rotating frame 132 is located between the liner 112 and the faceplate 111. When the fastener 131 is in the locked position, the limiting hole 13209 and the float mounting hole are aligned.

[0164] See Figure 5 , Figure 6 , Figure 9 as well as Figure 12 For example, the rotating frame 132 includes at least one auxiliary beam 13231. The two ends of the auxiliary beam 13231 are connected to the main beam 1322 and the frame 1320, respectively. A limiting hole 13209 is provided at the junction of the auxiliary beam 13231 and the main beam 1322.

[0165] According to this application, by setting the limiting hole 13209 at the junction of the auxiliary beam 13231 and the main beam 1322, it helps to compensate for the strength of the main beam 1322 at the limiting hole 13209, thereby ensuring the consistency of the structural strength of each part of the main beam 1322.

[0166] Continue reading Figures 3 to 6 as well as Figures 9 to 15 For example, the guide hole 1321 also includes a positioning segment. The positioning segment communicates with the drive segment 13211. The extension trajectory of the positioning segment is an arc centered on the first axis AX1. When the fastener 131 is in the unlocked or locked position, the guide connector 137 is located within the positioning segment or at the junction of the positioning segment and the drive segment 13211.

[0167] According to this application, by setting a positioning section, factors such as tolerances can be overcome and the rotating frame 132 can continue to rotate, thereby ensuring that the guide connector 137 connected to the fastener 131 can reliably move to the end of the drive section 13211 or the position of the positioning section, thus ensuring that the fastener 131 can reach the locked position or the unlocked position. Moreover, when the fastener 131 is in the locked position or the unlocked position, if the guide connector 137 connected to the fastener 131 is in the positioning section, the fastener 131 can be held in the locked position or the unlocked position.

[0168] See Figures 9 to 12 Optionally, the guide hole 1321 includes two positioning sections. The two positioning sections are a cover locking positioning section 13212 and a cover opening positioning section 13213. Both ends of the drive section 13211 are respectively connected to the cover locking positioning section 13212 and the cover opening positioning section 13213. The width of the cover locking positioning section 13212 is greater than the width of the drive section 13211. Alternatively, the width of the cover opening positioning section 13213 is greater than the width of the drive section 13211. The widths of both the cover locking positioning section 13212 and the cover opening positioning section 13213 are greater than the width of the drive section 13211.

[0169] According to this application, when the guide connector 137 is located in the lock cover positioning section 13212, the latching member 131 can be held in the locked position. When the guide connector 137 is located in the open cover positioning section 13213, the latching member 131 can be held in the unlocked position. By making the width of at least one of the lock cover positioning section 13212 and the open cover positioning section 13213 greater than the width of the drive section 13211, the guide connector 137 can be moved more easily from the drive section 13211 to at least one of the lock cover positioning section 13212 and the open cover positioning section 13213, thereby reducing the probability of the guide connector 137 getting stuck at the connection between the drive section 13211 and at least one of the lock cover positioning section 13212 and the open cover positioning section 13213, or even avoiding getting stuck.

[0170] Optionally, the difference between the width of the drive section 13211 and the width of at least one of the cover positioning section 13212 and the cover opening positioning section 13213 has a certain range. This width difference is greater than 0 and less than 1 mm. For example, the width difference can be 0.2 mm, 0.3 mm, etc.

[0171] For example, multiple guide holes 1321 and fasteners 131 are provided at circumferential intervals along the frame 1320 and correspond one-to-one. The frame 1320 includes a first transfer area and a second transfer area. The first transfer area is provided with guide holes 1321. The area of ​​the frame 1320 between two adjacent guide holes 1321 forms the second transfer area. The width of the first transfer area in the radial direction centered on the first axis AX1 is greater than the width of the second transfer area.

[0172] According to this application, by setting the width of the first transmission area of ​​the frame 1320 with the guide hole 1321 to be wider than that of the second transmission area, the structural strength of the frame 1320 at the guide hole 1321 can be improved, thereby ensuring that the structural strength of each part of the frame 1320 in the circumferential direction is more balanced, which helps to improve the stability and uniformity of the frame 1320 when transmitting force.

[0173] Preferably, the guide hole 1321 and the fastener 131 are evenly arranged along the circumference of the frame 1320.

[0174] Continue reading Figures 3 to 6 ,as well as Figures 9 to 15 For example, the cross-section of the guide connector 137 perpendicular to the first axis AX1 is circular. The length of the extension trajectory of either the locking cover positioning section 13212 or the opening cover positioning section 13213 is greater than the diameter of the guide connector 137.

[0175] According to this application, this allows the guide connector 137 of the fastener 131 to move to a position completely disengaged from the drive section 13211, ensuring that the fastener 131 can reach the locked position and the unlocked position, and can be reliably held in the locked position and the unlocked position by the rotating frame 132.

[0176] In other examples, the cross-section of the guide connector 137 can be any shape other than a circle, such as an ellipse, a polygon, etc.

[0177] The following is a further description of the main beam 1322, auxiliary beam 13231, and other structures of the rotating frame 132. The main beam 1322 may include the first connecting section 13221, the first support section 13222, the first main beam section 13223, the second main beam section 13225, the second support section 13226, and the second connecting section 13227. One or both of the first connecting section 13221 and the second connecting section 13227 constitute the aforementioned connecting section 13230. The main beam section 13229 includes at least the first main beam section 13223 and the second main beam section 13225, and may also include one or both of the first support section 13222 and the second support section 13226. The auxiliary beam 13231 includes at least one of the first auxiliary beam 13205, the second auxiliary beam 13206, the third auxiliary beam 13207, and the fourth auxiliary beam 13208.

[0178] See Figure 5 , Figure 6 ,as well as Figures 9 to 12 For example, the rotating frame 132 may include a first auxiliary beam 13205 and a second auxiliary beam 13206. The first auxiliary beam 13205 and the second auxiliary beam 13206 are located on opposite sides of the main beam 1322. Both the first auxiliary beam 13205 and the second auxiliary beam 13206 extend in a direction intersecting the main beam 1322. One end of the first auxiliary beam 13205 is connected to the main beam 1322 at a limiting hole 13209. The other end of the first auxiliary beam 13205 is connected to the frame 1320. One end of the second auxiliary beam 13206 is connected to the main beam 1322 at the limiting hole 13209. The other end of the second auxiliary beam 13206 is connected to the frame 1320.

[0179] According to this application, by connecting one end of each of the first auxiliary beam 13205 and the second auxiliary beam 13206 to the frame 1320, the deformation resistance of the portion of the frame 1320 connected by the first auxiliary beam 13205 and the second auxiliary beam 13206 can be improved to a certain extent. That is, the shape stability of the portion of the frame 1320 not connected to the main beam 1322 can be improved, preventing deformation due to lack of support under its own weight and other forces. By connecting the other end of each of the first auxiliary beam 13205 and the second auxiliary beam 13206 to the main beam 1322 at the limiting hole 13209, the structural strength of the main beam 1322 at the limiting hole 13209 can be strengthened. Furthermore, compared to simply setting the main beam 1322 within the frame 1320, adding the first auxiliary beam 13205 and the second auxiliary beam 13206 increases the force transmission path between the frame 1320 and the main beam 1322, thus dispersing the force between them and preventing stress concentration at the connection point. This also prevents the structural strength requirements from becoming too high due to stress concentration. Simultaneously, adding the first auxiliary beam 13205 and the second auxiliary beam 13206 ensures the stability of the transmission center, thereby transmitting the rotational force more evenly to the fasteners 131 at different positions. This allows the rotating frame 132 to rotate more uniformly, resulting in more stable movement of the fasteners 131.

[0180] Similarly, see also Figure 5 , Figure 6 ,as well as Figures 9 to 12 Optionally, the rotating frame 132 may include a third auxiliary beam 13207 and a fourth auxiliary beam 13208. The third auxiliary beam 13207 and the fourth auxiliary beam 13208 are located on opposite sides of the main beam 1322. Both the third auxiliary beam 13207 and the fourth auxiliary beam 13208 are located on the side of the first axis AX1 away from the first auxiliary beam 13205 and the second auxiliary beam 13206. Both the third auxiliary beam 13207 and the fourth auxiliary beam 13208 extend in a direction intersecting the main beam 1322. One end of each of the third auxiliary beam 13207 and the fourth auxiliary beam 13208 is connected to the main beam 1322. The other end of each of the third auxiliary beam 13207 and the fourth auxiliary beam 13208 is connected to the frame 1320. Here, the third auxiliary beam 13207 and the fourth auxiliary beam 13208 can be understood as reinforcing beams between the portion of the main beam 1322 located on the other side of the rotating part 13224 and the frame 1320. The third auxiliary beam 13207 and the fourth auxiliary beam 13208 serve the same function as the first auxiliary beam 13205 and the second auxiliary beam 13206.

[0181] Continue reading Figure 5 , Figure 6 ,as well as Figures 9 to 12Furthermore, the main beam 1322 may include a first connecting segment 13221 and a first main beam segment 13223 arranged sequentially. The end of the first connecting segment 13221 away from the first main beam segment 13223 is connected to the frame 1320. The end of the first main beam segment 13223 away from the first connecting segment 13221 is connected to the rotating part 13224. A limiting hole 13209 is located between the first connecting segment 13221 and the first main beam segment 13223.

[0182] According to this application, the limiting hole 13209 and the rotating part 13224, and the limiting hole 13209 and the frame 1320 are all arranged at intervals. This can reduce or avoid the impact on the structural strength of the connection between the first connecting section 13221 and the frame 1320 when the limiting hole 13209 is arranged close to the frame 1320, and can also reduce or avoid the impact on the structural strength of the connection between the first main beam section 13223 and the rotating part 13224 when the limiting hole 13209 is arranged close to the rotating part 13224.

[0183] Optionally, the extension directions of the first connecting segment 13221 and the first main beam segment 13223 may be the same or different.

[0184] Optionally, the first connecting segment 13221 and the first main beam segment 13223 can each extend along a straight line, a curve, or other regular or irregular extension paths.

[0185] See also Figure 5 , Figure 6 ,as well as Figures 9 to 12 In addition, the main beam 1322 may also include a first support segment 13222. A first connecting segment 13221 extends in the plane of the frame 1320. A first main beam segment 13223 is located above the plane of the frame 1320 in the thickness direction of the cover assembly 11. In other words, the first connecting segment 13221 is coplanar with the frame 1320. The first main beam segment 13223 is not coplanar with the frame 1320. The first support segment 13222 extends in the thickness direction and connects the first connecting segment 13221 and the first main beam segment 13223. A limiting hole 13209 is located between the first connecting segment 13221 and the first support segment 13222.

[0186] According to this application, by setting the first connecting segment 13221 and the first main beam segment 13223 at different positions in the thickness direction of the cover assembly 11, and by providing a first support segment 13222 between the first connecting segment 13221 and the first main beam segment 13223 to connect the first connecting segment 13221 and the first main beam segment 13223, the first support segment 13222 extends in the thickness direction of the cover assembly 11. Therefore, the first support segment 13222 can limit the relative positions of the first connecting segment 13221 and the first main beam segment 13223 in the thickness direction of the cover assembly 11, thereby preventing the first connecting segment 13221 and the first main beam segment 13223 from approaching or moving away from each other in the height direction D3. Furthermore, when one of the first auxiliary beam 13205 and the second auxiliary beam 13206 is subjected to an upward resisting force from the float member 136, the first support segment 13222 can, to a certain extent, suppress the upward deformation of one of the first auxiliary beam 13205 and the second auxiliary beam 13206. Furthermore, since the first connecting segment 13221 extends in the plane of the frame 1320 and the first main beam segment 13223 is located above the plane of the frame 1320 in the thickness direction, it helps to reduce the thickness of the portion of the cover assembly 11 corresponding to the rotation trajectory range of the first connecting segment 13221.

[0187] See also Figure 5 , Figure 6 ,as well as Figures 9 to 12 Furthermore, the main beam 1322 may include a second main beam segment 13225 and a second connecting segment 13227 arranged sequentially. The second main beam segment 13225 and the first main beam segment 13223 are located on opposite sides of the first axis AX1. The end of the second main beam segment 13225 away from the second connecting segment 13227 is connected to the rotating part 13224. The end of the second connecting segment 13227 away from the second main beam segment 13225 is connected to the frame 1320. A third auxiliary beam 13207 and a fourth auxiliary beam 13208 are each connected to the main beam 1322 between the second main beam segment 13225 and the second connecting segment 13227.

[0188] According to this application, by connecting the third auxiliary beam 13207 and the fourth auxiliary beam 13208 to the main beam 1322 between the second main beam segment 13225 and the second connecting segment 13227, the structural strength of the main beam 1322 at the connection point between the second main beam segment 13225 and the second connecting segment 13227 can be improved.

[0189] Optionally, the extension directions of the second main beam segment 13225 and the first main beam segment 13223 can be the same or different. The extension directions of the second main beam segment 13225 and the second connecting segment 13227 can also be the same or different. For example, in the figure, the second main beam segment 13225 and the first main beam segment 13223 are arranged intersectingly. The angle between the second main beam segment 13225 and the first main beam segment 13223 facing the lamp plate slot is greater than 180°. The lamp plate slot is the aforementioned first receiving cavity. The angle between the second main beam segment 13225 and the first main beam segment 13223 facing the steam valve 114 is less than 180°.

[0190] Optionally, the second main beam segment 13225 and the second connecting segment 13227 can each extend along a straight line, a curve, or other regular or irregular extension paths.

[0191] See Figures 3 to 12 Furthermore, at least a portion of the electrically operated pressure relief device 120 is located on one side of the rotating part 13224 and below the second main beam section 13225. The main beam 1322 may also include a second support section 13226. The second main beam section 13225 extends in the plane of the frame 1320. The second connecting section 13227 is located above the plane of the frame 1320 in the thickness direction of the cover assembly 11. In other words, the second main beam section 13225 is coplanar with the frame 1320, while the second connecting section 13227 is not coplanar with the frame 1320. The second support section 13226 extends in the thickness direction and connects between the second main beam section 13225 and the first main beam section 13223. The third auxiliary beam 13207 and the fourth auxiliary beam 13208 are respectively connected to the main beam 1322 between the second connecting section 13227 and the second support section 13226. A second clearance space 13201 with a downward opening is formed between the second support section 13226, the second main beam section 13225 and the rotating part 13224. The second clearance space 13201 is adapted to accommodate the electric pressure relief device 120 of the part, so as to always keep the main beam 1322 and the electric pressure relief device 120 apart.

[0192] According to this application, by positioning the second main beam segment 13225 and the second connecting segment 13227 at different positions in the thickness direction of the cover assembly 11, and by providing a second support segment 13226 between the second main beam segment 13225 and the second connecting segment 13227 to connect them, the second support segment 13226 extends in the thickness direction of the cover assembly 11. Therefore, the second support segment 13226 can restrict the relative positions of the second main beam segment 13225 and the second connecting segment 13227 in the thickness direction of the cover assembly 11, thereby preventing the second main beam segment 13225 and the second connecting segment 13227 from approaching or moving away from each other in the height direction D3. Furthermore, since the second connecting segment 13227 extends within the plane of the frame 1320, and the second main beam segment 13225 is located above the plane of the frame 1320 in the thickness direction, it helps to reduce the thickness of the portion of the cover assembly 11 corresponding to the rotation trajectory range of the second connecting segment 13227. The second clearance space 13201 formed between the second support segment 13226, the second main beam segment 13225, and the rotating part 13224 can avoid the electric pressure relief device 120 located below the second main beam segment 13225, thus preventing interference between the rotating frame 132 and the electric pressure relief device 120. At the same time, by providing the second clearance space 13201, it is not necessary to raise the main beam 1322 as a whole, which helps to reduce the height of the portion of the main beam 1322 excluding the second main beam segment 13225, and further helps to reduce the thickness of the cover assembly 11 corresponding to the portion of the main beam 1322 excluding the second main beam segment 13225.

[0193] Optionally, the push rod, push-pull electromagnet, and other structures of the electric pressure relief device 120 are arranged directly below the rotation trajectory of the second main beam segment 13225. The second clearance space 13201 is used to avoid the push rod, push-pull electromagnet, and other structures.

[0194] See also Figures 3 to 6 ,as well as Figures 9 to 15 Exemplarily, the cover assembly 11 may include a plurality of fasteners 131. The rotating frame 132 includes a plurality of guide holes 1321. Each guide hole 1321 is circumferentially spaced around a first axis AX1. The main beam 1322 is circumferentially spaced from the guide holes 1321. The rotating frame 132 may include a plurality of auxiliary beams. One end of each auxiliary beam is connected to the main beam 1322. The other end of each auxiliary beam is connected to the frame 1320 at each guide hole 1321.

[0195] According to this application, by connecting one end of each of the multiple auxiliary beams to the main beam 1322 and the other end of each to the frame 1320 at each guide hole 1321, the force transmission path between the frame 1320 and the rotating part 13224 can be increased, while the structural strength of the frame 1320 at the guide hole 1321 can be improved. This can suppress the deformation of the frame 1320 at the guide hole 1321, ensuring that the force on the rotating frame 132 at each guide hole 1321 is more balanced, and thus making the force transmission between the rotating frame 132 and each fastener 131 more uniform.

[0196] See Figure 5 , Figure 6 ,as well as Figures 9 to 12 Optionally, the multiple auxiliary beams here may include the four beam structures described above: the first auxiliary beam 13205, the second auxiliary beam 13206, the third auxiliary beam 13207, and the third auxiliary beam 13208. Correspondingly, the rotating frame 132 is provided with four guide holes 1321. The four guide holes 1321 are arranged circumferentially at intervals around the first axis AX1. The ends of the first auxiliary beam 13205, the second auxiliary beam 13206, the third auxiliary beam 13207, and the third auxiliary beam 13208, each connected to one of the four guide holes 1321 on the frame 1320 at their ends furthest from the main beam 1322.

[0197] Preferably, the four guide holes 1321 are arranged at equal intervals in a circumferential direction centered on the first axis AX1.

[0198] See Figures 3 to 6 , Figures 9 to 12 , Figure 14 as well as Figure 15 For example, the cover assembly 11 may include a first member to be avoided. The first member to be avoided, the first auxiliary beam 13205, and the third auxiliary beam 13207 are all located on the same side of the main beam 1322. The plane containing the rotation trajectory of any one of the first main beam segment 13223, the second main beam segment 13225, the first auxiliary beam 13205, the third auxiliary beam 13207, and the frame 1320 intersects with the first member to be avoided. The first main beam segment 13223, the second main beam segment 13225, the first auxiliary beam 13205, the third auxiliary beam 13207, and the frame 1320 enclose a first avoidance space 13202. The first avoidance space 13202 is adapted to accommodate the first member to be avoided. The cover assembly 11 is configured such that the rotating frame 132 is always spaced apart from the first member to be avoided during the rotation of the rotating frame 132.

[0199] According to this application, the first clearance space 13202 formed between the first main beam segment 13223, the second main beam segment 13225, the first auxiliary beam 13205, the third auxiliary beam 13207, and the frame 1320 can effectively avoid the first member to be avoided. Compared to raising the portion of the rotating frame 132 corresponding to the first member to be avoided as a whole, the thickness of the cover assembly 11 at the first member to be avoided can be effectively reduced.

[0200] Optionally, the first component to be avoided is a steam valve 114.

[0201] Continue reading Figures 3 to 6 , Figures 9 to 12 , Figure 14 as well as Figure 15 For example, the cover assembly 11 may include a second member to be avoided. The second member to be avoided and the first member to be avoided are located on opposite sides of the main beam 1322. The second member to be avoided, the second auxiliary beam 13206, and the fourth auxiliary beam 13208 are all located on the same side of the main beam 1322. The plane containing the rotation trajectory of any one of the first main beam segment 13223, the second main beam segment 13225, the second auxiliary beam 13206, the fourth auxiliary beam 13208, and the frame 1320 intersects with the second member to be avoided. The first main beam segment 13223, the second main beam segment 13225, the second auxiliary beam 13206, the fourth auxiliary beam 13208, and the frame 1320 enclose another first avoidance space 13202. The first avoidance space 13202 is adapted to accommodate the second member to be avoided. The cover assembly 11 is configured such that the rotating frame 132 is always spaced apart from the second member to be avoided during rotation of the rotating frame 132.

[0202] According to this application, the first clearance space 13202 formed between the first main beam segment 13223, the second main beam segment 13225, the second auxiliary beam 13206, the fourth auxiliary beam 13208, and the frame 1320 can effectively avoid the second member to be avoided. Compared to raising the portion of the rotating frame 132 corresponding to the second member to be avoided as a whole, the thickness of the cover assembly 11 at the second member to be avoided can be effectively reduced.

[0203] See Figures 1 to 12 , Figure 14 ,as well as Figure 15 Optionally, the rotating frame 132 is located above the liner 112 and below the faceplate 111. That is, the rotating frame 132 is located within the space between the faceplate 111 and the liner 112. The second member to be avoided is a structure in which the lower surface of the faceplate body 1111 protrudes downward at the first receiving cavity 11111. This allows for full utilization of the thickness space of the cover assembly 11 while improving the structural compactness of the cover assembly 11.

[0204] See Figure 5 , Figure 6 ,as well as Figures 9 to 15 Optionally, the rotating part 13224 is configured to extend downward from the intersection of the first main beam segment 13223 and the second main beam segment 13225. Here, "downward" can be understood as extending in a direction parallel to the first axis AX1 and towards the liner 112. In some applications, the second member to be avoided is relatively close to the first axis AX1. To avoid interference between the rotating frame 132 and the second member to be avoided, a clearance notch 13204 is provided on the upper part of the rotating part 13224 to allow passage of the second member.

[0205] See Figures 3 to 6 ,as well as Figures 9 to 15 For example, the extension trajectory of the locking cover positioning segment 13212 is an arc centered on the first axis AX1. The extension trajectory of the opening cover positioning segment 13213 is another arc centered on the first axis AX1. The guide connector 137 of the fastener 131 in the locked position is in the locking cover positioning segment 13212. The guide connector 137 of the fastener 131 in the unlocked position is in the opening cover positioning segment 13213.

[0206] According to this application, by setting the locking cover positioning section 13212 and the opening cover positioning section 13213, it is possible not only to ensure that the guide connector 137 of the fastening member 131 can move to a position other than the driving section 13211 so that the fastening member 131 can reach the locking position and the unlocking position, but also to maintain the position of the fastening member 131 when the fastening member 131 moves to the locking position and the unlocking position.

[0207] See also Figures 3 to 6 ,as well as Figures 9 to 15 For example, the inner periphery of the border 1320 is a circular inner periphery extending circumferentially with the first axis AX1 as the center. The outer periphery of the border 1320 can be a circular outer periphery extending circumferentially with the first axis AX1 as the center, or it can be an outer periphery of other regular or irregular closed shapes.

[0208] like Figures 3 to 12 , Figure 14 as well as Figure 15 As shown, optionally, the inner periphery of the frame 1320 is provided with an inner periphery rib 13216. The inner periphery rib 13216 is a reinforcing rib. The inner periphery rib 13216 is used to enhance the structural strength of the frame 1320 at its inner periphery. Viewed from the cross-section of the frame 1320, the inner periphery rib 13216 is configured to extend upward and / or downward from the body of the frame 1320. It is understood that the shape of the inner periphery rib 13216 can also be other shapes.

[0209] Continue reading Figures 3 to 12 , Figure 14 as well as Figure 15 Optionally, the outer periphery of the frame 1320 is provided with an outer peripheral rib 13215. The outer peripheral rib 13215 is a reinforcing rib. The outer peripheral rib 13215 is used to enhance the structural strength of the frame 1320 at its outer periphery. Viewed in cross-section from the frame 1320, the outer peripheral rib 13215 is constructed to extend upward and / or downward from the body of the frame 1320. It is understood that the shape of the outer peripheral rib 13215 can also be other shapes.

[0210] See also Figures 3 to 12 , Figure 14 as well as Figure 15 For example, the main beam 1322 is provided with main beam reinforcement 13228. The main beam reinforcement 13228 extends along the extension direction of the main beam 1322. There may be at least two sets of main beam reinforcement 13228. Each set of main beam reinforcement 13228 is arranged at intervals in a direction perpendicular to the extension direction of the main beam 1322. In the figure, the two sets of main beam reinforcement 13228 are located at both ends of the main beam 1322 in a direction perpendicular to the extension direction of the main beam 1322. The main beam reinforcement 13228 may be distributed in the first support section 13222, the first main beam section 13223, the second main beam section 13225, and the second support section 13226. The main beam reinforcement 13228 located in the first main beam section 13223 and the second main beam section 13225 are located at their respective tops. The main beam reinforcement 13228 located in the first support section 13222 and the second support section 13226 are located on their respective surfaces away from each other. By setting the main beam reinforcement 13228, the structural strength of the corresponding parts can be enhanced to obtain higher resistance to deformation.

[0211] like Figure 9 As shown, exemplarily, the rotating frame 132 includes annular ribs 13217. The annular ribs 13217 surround and form a limiting hole 13209. The annular ribs 13217 are connected to the first connecting section 13221, the first support section 13222, the first auxiliary beam 13205, and the second auxiliary beam 13206, thereby further strengthening the structural strength of the rotating frame 132 at the limiting hole 13209. When the float member 136 is located within the limiting hole 13209, the rotating frame 132 can more reliably maintain the shape around the limiting hole 13209, improving its resistance to deformation.

[0212] like Figure 9 and Figure 10 As shown, the rotating part 13224 can be configured as a tubular structure. Correspondingly, the cover 112 can be provided with a rotating shaft that can be fitted into the hole of the rotating part 13224. The rotating frame 132 is mounted on the cover 112 by the cooperation between the rotating part 13224 and the rotating shaft.

[0213] The following provides a more detailed explanation of the guide hole 1321 of the rotating frame 132132 and the principle of the transmission between the rotating frame 132132 and the fastener 131.

[0214] See Figures 11 to 13 For example, the drive segment 13211 has a first center point Pt1 and a second center point Pt2 spaced along its extended trajectory. The first center point Pt1 and the second center point Pt2 can be understood as the endpoints of the centerline of the drive segment 13211 along its own groove length direction. The first center point Pt1 is closer to the locking cover positioning segment 13212 than the second center point Pt2. The distance between the first center point Pt1 and the first axis AX1 is less than the distance between the second center point Pt2 and the first axis AX1. The end of the locking cover positioning segment 13212 furthest from the first center point Pt1 has a third center point Pt3. The first center point Pt1 and the third center point Pt3 can be understood as the endpoints of the centerline of the locking cover positioning segment 13212 along its own groove length direction. The distance between the third center point Pt3 and the first axis AX1 is equal to the distance between the first center point Pt1 and the first axis AX1. Alternatively, the distance between the third center point Pt3 and the first axis AX1 is less than the distance between the first center point Pt1 and the first axis AX1, and the third center point Pt3 is located on the side of the line connecting the first center point Pt1 and the second center point Pt2 away from the first axis AX1. According to this application, when the fastening member 131 moves to the position corresponding to the third center point Pt3, the position of the fastening member 131 relative to the cover assembly 11 is the same as the position of the fastening member 131 relative to the cover assembly 11 when it is at the first center point Pt1, so that the position of the fastening member 131 is maintained by the first groove while the rotating frame 132 rotates, thereby increasing the rotation range of the rotating frame 132 to adapt to some application scenarios where the position sensor is not sensitive.

[0215] The end of the cover-opening positioning section 13213 furthest from the second center point Pt2 has a fourth center point Pt4. The second center point Pt2 and the fourth center point Pt4 can be understood as the endpoints of the centerline along the length of the groove of the cover-opening positioning section 13213. The distance between the fourth center point Pt4 and the first axis AX1 is equal to the distance between the second center point Pt2 and the first axis AX1. Alternatively, the distance between the fourth center point Pt4 and the first axis AX1 is less than the distance between the second center point Pt2 and the first axis AX1, and the fourth center point Pt4 is located on the side of the line connecting the first center point Pt1 and the second center point Pt2 closer to the first axis AX1. According to this application, when the fastener 131 moves to the position corresponding to the fourth center point Pt4, the position of the fastener 131 relative to the cover assembly 11 is the same as the position of the fastener 131 relative to the cover assembly 11 when it is at the second center point Pt2. This allows the position of the fastener 131 to be maintained by the third groove while the rotating frame 132 rotates, thereby increasing the rotation range of the rotating frame 132 to adapt to some application scenarios where the sensing is not sensitive.

[0216] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of this application. Terms such as “setup” appearing herein can refer to either a component being directly attached to another component or a component being attached to another component via an intermediary. A feature described in one embodiment herein may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0217] This application has been described through the above embodiments; however, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this application to the described embodiments. Those skilled in the art will understand that many more variations and modifications can be made based on the teachings of this application, and all such variations and modifications fall within the scope of protection claimed in this application.

Claims

1. A cover assembly (11) for a cooking utensil, characterized in that, The cover assembly (11) includes: A cover body (110), the cover body (110) including an inner cover (113); The fastener (131) is movable between a locked position and an unlocked position along the radial direction of the inner cover (113); A guide connector (137) is connected to the fastener (131); A rotating frame (132) is rotatable about a first axis (AX1) relative to the cover body (110). The edge of the rotating frame (132) has a transmission part (1324). The rotating frame (132) includes a guide hole (1321). The guide connector (137) is slidably connected along the guide hole (1321). The guide hole (1321) includes a drive segment (13211) extending along a preset drive trajectory. The dimension of the drive segment (13211) in the radial direction is equal to the maximum distance that the fastener (131) moves in the radial direction. The angle between the tangent of any point on the drive trajectory and the line connecting the two ends of the drive trajectory to the circle centered on the first axis (AX1) is α, where α ≠ 0° and α ≠ 90°. A transmission connector (133) is rotatably connected to the cover body (110) about a second axis (AX2) parallel to the first axis (AX1), and the transmission connector (133) is connected to the transmission part (1324) and drives the rotating frame (132) to rotate; and A driving component, which is connected to the transmission connector (133) and can drive the transmission connector (133) to rotate.

2. The cover assembly (11) according to claim 1, characterized in that, 0°＜α≤45°。 3. The cover assembly (11) according to claim 2, characterized in that, 10°≤α≤30°。 4. The cover assembly (11) according to claim 1, characterized in that, The driving component is disposed on the outside of the rotating frame (132) along the radial direction of the inner cover (113), and the distance between the first axis (AX1) and the second axis (AX2) is greater than the radius of the rotation trajectory of the rotating frame (132).

5. The cover assembly (11) according to claim 1, characterized in that, The rotating frame (132) includes a frame (1320) and a main beam (1322). The frame (1320) includes the guide hole (1321) and the transmission part (1324). A hollow area is provided on the inner side of the frame (1320). The main beam (1322) is located in the hollow area and its two ends are connected to the frame (1320). The main beam (1322) includes a rotating part (13224) located on the first axis (AX1).

6. The cover assembly (11) according to claim 5, characterized in that, The rotating frame includes at least one auxiliary beam (13231), the two ends of which are connected to the main beam (1322) and the frame (1320), respectively.

7. The cover assembly (11) according to claim 6, characterized in that, The guide holes (1321) and the fasteners (131) are provided in multiple and corresponding manner at intervals along the circumference of the frame (1320). The frame (1320) includes a first transfer area and a second transfer area. The first transfer area is provided with the guide holes (1321). The area of ​​the frame (1320) between two adjacent guide holes (1321) forms the second transfer area. One end of the auxiliary beam is connected to the main beam (1322), and the other end is connected to the first transfer area.

8. The cover assembly (11) according to claim 6, characterized in that, At least one of the opposite sides of the main beam (1322) is connected to two spaced auxiliary beams (13231), and the two auxiliary beams (13231) and the main beam (1322) form a first clearance space.

9. The cover assembly (11) according to claim 6, characterized in that, The main beam (1322) and / or the auxiliary beam (13231) are provided with reinforcing ribs.

10. The cover assembly (11) according to claim 5, characterized in that, The main beam (1322) includes a main beam segment (13229) and a connecting segment (13230). The main beam segment (13229) is connected to the connecting segment (13230), and the connecting segment (13230) is connected to the frame (1320). Along the axial direction of the inner cover (113), the main beam segment (13229) is higher than the connecting segment (13230), and a second clearance space is formed below the main beam segment (13229).

11. The cover assembly (11) according to claim 1, characterized in that, The cover assembly (11) further includes a limiting component, which is installed on the cover body (110) and can move between a normal pressure position and a pressurized position. The rotating frame (132) includes a frame (1320) and a main beam (1322). The frame (1320) includes the guide hole (1321) and the transmission part (1324). A hollow area is provided on the inner side of the frame (1320). The main beam (1322) is located in the hollow area and its two ends are connected to the frame (1320). The main beam (1322) is provided with a limiting hole (13209). When the limiting component is in the pressure position, the limiting component can be inserted into the limiting hole (13209) and prevent the rotating frame (132) from rotating; when the limiting component is in the normal pressure position, the limiting component exits the limiting hole (13209) and allows the rotating frame (132) to rotate.

12. The cover assembly (11) according to claim 11, characterized in that, The rotating frame (132) includes at least one auxiliary beam (13231), the two ends of which are connected to the main beam (1322) and the frame (1320) respectively, and the limiting hole (13209) is provided at the junction of the auxiliary beam (13231) and the main beam (1322).

13. The cover assembly (11) according to claim 1, characterized in that, The guide hole (1321) further includes a positioning section, which is connected to the drive section (13211). The extension trajectory of the positioning section is an arc centered on the first axis (AX1). When the fastener (131) is in the unlocked position or the locked position, the guide connector (137) is located within the positioning section or at the junction of the positioning section and the drive section (13211).

14. The cover assembly (11) according to claim 13, characterized in that, The guide hole (1321) includes two positioning sections, namely a cover locking positioning section (13212) and a cover opening positioning section (13213). The two ends of the drive section (13211) are respectively connected to the cover locking positioning section (13212) and the cover opening positioning section (13213). The width of the cover locking positioning section (13212) and / or the cover opening positioning section (13213) is greater than the width of the drive section (13211).

15. The cover assembly (11) according to claim 1, characterized in that, The rotating frame (132) includes a frame (1320). The guide holes (1321) and the fasteners (131) are arranged in a plurality of one-to-one correspondences along the circumferential direction of the frame (1320). The frame (1320) includes a first transfer area and a second transfer area. The first transfer area is provided with the guide holes (1321). The area of ​​the frame (1320) between two adjacent guide holes (1321) forms the second transfer area. The width of the first transfer area in the radial direction centered on the first axis (AX1) is greater than the width of the second transfer area.

16. A cooking utensil, characterized in that, The cooking appliance includes: A pot body assembly (10), the pot body assembly (10) including a snap-fit ​​edge; According to any one of claims 1 to 15, the lid assembly (11) is closably disposed on the pot body assembly (10), the fastener (131) in the locked position is locked to the inner lid (113) and the fastening edge, and the fastener (131) in the unlocked position unlocks the inner lid (113) and the fastening edge (101).

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