Cooking utensil

Abstract

The utility model provides a cooking utensil. The cooking utensil comprises a pot body, a cover body, a cover locking and opening assembly and a locking position detection device. The rotating frame is rotatably connected to the cover body. The guide hole of the rotating frame comprises a positioning section and a driving section. The fastener is translatable between a locked position and an unlocked position. The guide connecting piece is movably connected to the guide hole. The guide connecting piece is fixedly connected to the buckling piece. When the rotating frame is in the driving stroke, the guiding connecting piece moves along the driving section and drives the buckling piece to move towards the locking position or the unlocking position. When the rotating frame is located at the terminal position of the safe stroke, the guiding connecting piece moves to the positioning section. And the positioning section limits the buckling piece to move towards the unlocking position or the locking position. The position detection device is configured to detect whether the buckling piece is located at the locking position and / or the unlocking position or not. When the rotating frame is located at the terminal position of the driving stroke or the safe stroke, the trigger piece of the rotating frame triggers the position detection device. The probability of position error detection can be reduced.

Description

Technical Field

[0001] This utility model relates generally to the technical field of household appliances, and more specifically to a cooking utensil. Background Technology

[0002] The cooking appliance in the related technology includes a pot body and a lid. The lid is detachably mounted on the pot body. The lid has a locking / unlocking mechanism, which is switched electronically. The locking / unlocking mechanism includes a transmission frame and a fastening element. The transmission frame rotates around a center of rotation. The transmission frame has a guide hole. The fastening element is connected to the guide hole via a guide post. The guide post can move within the guide hole as the transmission frame rotates, thereby driving the fastening element to reciprocate radially along the lid body to lock and unlock the lid to the pot body. The lid also has a position detection element to detect whether the trigger element on the transmission frame has moved into position, thereby determining whether the fastening element has moved into position. However, due to factors such as tolerances, although the position detection element can detect the position of the trigger element, the fastening element may not actually have moved into position, resulting in false detection and posing a significant cooking safety risk. Utility Model Content

[0003] The present invention includes a series of simplified concepts, which will be further explained in detail in the detailed description section. This present invention 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 solve the above problems, this utility model provides a cooking utensil, the cooking utensil comprising:

[0005] pot body;

[0006] A lid, which is foldably disposed on the pot body;

[0007] A rotating frame, rotatably connected to the cover, the rotation stroke of the rotating frame including a drive stroke and a safety stroke, the rotating frame including a guide hole including a positioning section and a drive section connected in communication, and the rotating frame including a trigger element;

[0008] A fastening element, which is translatably connected to the cover between a locked position and an unlocked position;

[0009] A guide connector, movably connected to the guide hole and fixedly connected to the fastener, wherein when the rotating frame is in the drive stroke, the guide connector moves along the drive section and drives the fastener to the locked position or the unlocked position; when the rotating frame is in the end position of the safety stroke, the guide connector moves to the positioning section, the positioning section restricting the fastener from moving to the unlocked position or the locked position; and

[0010] A position detection device is configured to detect whether the fastener is in the locked position and / or the unlocked position. When the rotating frame is in the end position of the drive stroke or the safety stroke, the trigger activates the position detection device.

[0011] According to the cooking appliance of this application, during rotation, the rotating rack can drive the guide connector to move along the guide hole, thereby causing the fasteners to move between a locked position and an unlocked position. When the rotating rack is in the drive stroke, the guide connector drives the fasteners to move towards the locked position or the unlocked position. When the rotating rack is in the safety stroke, it can hold the fasteners that have moved to the locked position or the unlocked position in the locked position or the unlocked position, and can cause the fasteners that have not reached the locked position or the unlocked position to continue moving towards the locked position or the unlocked position by the continued rotation of the rotating rack in the safety stroke. When the rotating rack reaches the end position of the safety stroke, it ensures that all fasteners reach the locked position or the unlocked position. The triggering element triggers the position detection device at the end position of the drive stroke or during the safety stroke, and the position detection device receives a position detection signal indicating that the fasteners are locked or unlocked.

[0012] The position detection device is triggered by the triggering element after the rotating frame has completed its drive stroke or during the safety stroke. At this time, the fastening element may or may not have moved to the locked position. When the rotating frame rotates during the safety stroke, the guide connectors of fastening elements that have not previously moved to the locked position continue to slide along the drive section to the end position. This allows fastening elements that have not moved to the locked or unlocked position during the drive stroke to move to the locked position during the safety stroke. Fastening elements that have already moved to the locked or unlocked position remain stationary, ensuring that the fastening elements are in the locked or unlocked position after the rotating frame has completed its entire stroke. In this way, the signal received by the position detection device can represent the position status of the fastening element, thereby reducing the probability of false detection or misjudgment by the position detection device.

[0013] In other words, by setting a safety travel and a positioning section, the rotating frame can continue to rotate after completing the theoretical drive travel. On the one hand, this ensures that the guide connector can move the positioning section, thereby ensuring that the fasteners that have moved to the locked or unlocked position are more accurately kept in the locked or unlocked position. On the other hand, it can effectively overcome tolerance factors, allowing the fasteners that have not moved to the locked or unlocked position to move further to the locked or unlocked position, thereby reducing the probability of false detection or even misjudgment.

[0014] Optionally, the guide hole includes a first positioning segment and a second positioning segment, the first positioning segment and the second positioning segment being located at opposite ends of the drive segment.

[0015] When the guide connector is located in the first positioning segment, the fastening member is located in the locked position; when the guide connector is located in the second positioning segment, the fastening member is located in the unlocked position.

[0016] According to this application, the fastener is held in the locked position by the first positioning segment and in the unlocked position by the second positioning segment.

[0017] Optionally, the end of the drive segment closest to the first positioning segment is the first switching end, and when the guide connector is located at the first switching end, the fastening member is located in the locking position;

[0018] The end of the drive segment closest to the second positioning segment is the second switching end. When the guide connector is located at the second switching end, the fastening member is located at the unlocked position.

[0019] According to this application, since the fastening member is in the locked position when the guide connector is in the first switching end, the fastening member can be held in the locked position and the influence of tolerance can be eliminated when the guide connector is in the first positioning section. Since the fastening member is in the unlocked position when the guide connector is in the second switching end, the fastening member can be held in the unlocked position and the influence of tolerance can be eliminated when the guide connector is in the second positioning section.

[0020] Optionally, the rotating frame is rotatably connected to the cover about a first axis.

[0021] The fastening element is movably connected to the cover in a radial direction perpendicular to the first axis.

[0022] The first switching terminal and the second switching terminal are arranged circumferentially around the first axis, and the distance between the first switching terminal and the first axis is less than the distance between the second switching terminal and the first axis.

[0023] According to this application, with this configuration, when the guide connector moves towards the first switching end in the drive section, the fastening member moves radially towards the direction close to the first axis, thereby achieving the fastening member moving towards the locked position. When the guide connector moves towards the second switching end in the drive section, the fastening member moves radially away from the first axis, thereby achieving the fastening member moving towards the unlocked position.

[0024] Optionally, the rotation stroke of the rotating frame includes a locking safety stroke and an unlocking safety stroke. When the rotating frame is in the locking safety stroke, the guide connector can move to the first positioning segment. When the rotating frame is in the unlocking safety stroke, the guide connector can move to the second positioning segment.

[0025] The position detection device includes a locked position detection device and an unlocked position detection device. The locked position detection device is configured to detect whether the fastener is in the locked position. When the rotating frame is in the locked safety stroke, the trigger element activates the locked position detection device. The unlocked position detection device is configured to detect whether the fastener is in the unlocked position. When the rotating frame is in the unlocked safety stroke, the trigger element activates the unlocked position detection device.

[0026] According to this application, since the triggering element triggers the locking position detection device when the rotating frame is in the locking safety travel and triggers the unlocking position detection device when the rotating frame is in the unlocking safety travel, the accuracy of detecting and determining whether the fastener is in the locking position and / or unlocking position can be improved.

[0027] Optionally, the rotating frame is rotatably connected to the cover about a first axis;

[0028] The fastener is movably connected to the cover in a radial direction centered on the first axis;

[0029] The extension trajectory of the first positioning segment is an arc centered on the first axis;

[0030] The extension trajectory of the second positioning segment is an arc centered on the first axis.

[0031] According to this application, since the rotating frame rotates about the first axis and the fastener can move in the radial direction centered on the first axis relative to the cover, by setting the first positioning segment as an arc centered on the first axis, the fastener can be held in the locked position when the guide connector is in the first positioning segment, and by setting the second positioning segment as an arc centered on the first axis, the fastener can be held in the unlocked position when the guide connector is in the second positioning segment.

[0032] Optionally, the rotating frame is rotatably connected to the cover about a first axis. The rotating frame includes at least two guide holes, each of which is circumferentially spaced around the first axis. The end of the driving section closest to the positioning section is a switching end.

[0033] When the rotating frame rotates to the end position of the safe travel, the trigger activates the position detection device. All of the guide connectors are located in the positioning section, or some of the guide connectors are located in the positioning section and some of the guide connectors are located at the switching end of the drive section.

[0034] According to this application, when the rotating frame has at least two guide holes, if the tolerances between each fastening member and the rotating frame are consistent or small, the trigger element activates the position detection device when the rotating frame reaches the end position of its rotation stroke, and all guide connecting members are located in the positioning section. When the rotating frame has at least two guide holes, if the tolerances between each fastening member and the rotating frame differ significantly, the trigger element activates the position detection device when the rotating frame reaches the end position of its rotation stroke, with some guide connecting members located in the positioning section and others in the switching end of the drive section. Thus, by setting a positioning section, the influence of tolerances on the movement of the fastening members to the locked or unlocked position can be effectively eliminated.

[0035] Optionally, the end of the drive segment closest to the positioning segment is a switching end.

[0036] When the rotating frame rotates to the initial position of the safety stroke, the guide connector is located at the switching end or the part of the drive section other than the switching end;

[0037] When the rotating frame rotates to the end position of the safe travel, the guide connector is located at the switching end or the positioning section, and the trigger triggers the position detection device.

[0038] According to this application, due to the different tolerances of the guide connector and the rotating frame, when the rotating frame is at the initial position of the safe travel, the guide connector can be located at the switching end or the positioning section. When the rotating frame is at the end position of the safe travel, the guide connector is located in the positioning section, and the trigger can activate the position detection device. This configuration ensures that the trigger activates the position detection device when the rotating frame reaches its limit position, thereby helping to reduce the probability of false detection and improve the reliability of position detection.

[0039] Optionally, the rotating frame is rotatably connected to the cover about a first axis.

[0040] The trigger element is constructed as a protrusion extending outward from the edge of the rotating frame in a radial direction centered on the first axis. The locking position detection device and the unlocking position detection device are located at both ends of the travel of the trigger element as it rotates with the rotating frame.

[0041] According to this application, by setting the trigger as a protrusion extending radially outward from the edge of the rotating frame, and arranging a locking position detection device and an unlocking position detection device at both ends of the trigger's rotation stroke, it is possible to achieve the purpose of position detection while reducing the space occupied on the upper and / or lower sides of the rotating frame, and also helps to reduce the thickness of the cover.

[0042] Optionally, the position detection device is a micro switch, and the trigger element triggers the position detection device during the process of abutting at least a portion of the position detection device.

[0043] According to this application, when a micro switch is selected as the position detection device, the continued rotation of the rotating frame within its safe travel range ensures that the latching element is already in the locked or unlocked position when the triggering element abuts against and triggers the micro switch or when a position signal is issued. This makes the triggering of the micro switch reliable and accurate, improving the accuracy of position detection. At the same time, using a micro switch also helps reduce costs. Attached Figure Description

[0044] The following drawings, which illustrate embodiments of the present invention, are incorporated herein as part of the present invention for understanding the invention. The drawings show embodiments of the present invention and their descriptions, serving to explain the principles of the present invention. In the drawings,

[0045] Figure 1 A cross-sectional view of a cooking appliance according to a preferred embodiment of this application;

[0046] Figure 2 An exploded view of a cooking appliance according to a preferred embodiment of this application;

[0047] Figure 3 A perspective view of a cooking appliance without a lid according to a preferred embodiment of this application;

[0048] Figure 4 for Figure 3 A cross-sectional view of the lid of a cooking utensil excluding the top cover;

[0049] Figure 5 for Figure 3 Another top view of the cooking appliance shown without the lid, with the fastener in the unlocked position;

[0050] Figure 6 for Figure 3The image shows a top view of a cooking appliance without a lid, with the fasteners in the locked position.

[0051] Figure 7 for Figure 3 A schematic diagram of the rotating frame in the diagram;

[0052] Figure 8 for Figure 3 A top view of the rotating frame shown;

[0053] Figure 9 for Figure 8 A schematic diagram showing the positional relationship between a guide hole and the first axis;

[0054] Figure 10 for Figure 3 A top view of the assembly of the transmission connector and the drive motor in the middle;

[0055] Figure 11 for Figure 3 A stereoscopic view of the lining from a tilted, upward-looking perspective; and

[0056] Figure 12 for Figure 2 A perspective view of the fasteners in the middle.

[0057] Explanation of reference numerals in the attached figures:

[0058] 100: Pot body 101: Inner pot

[0059] 102: Mid-frame 103: Base

[0060] 104: Lid opening torsion spring; 110: Lid body

[0061] 110a: Steam passage; 111: Cover

[0062] 111a: Cover body 111b: Panel

[0063] 112: Liner; 112a: Guide cavity

[0064] 112b: Guide hole; 113: Inner cover

[0065] 114: Steam valve; 116: Control circuit board

[0066] 117: Cover Body

[0067] 120: Electric pressure relief device; 130: Cover locking and opening assembly.

[0068] 131: Fastening component; 131b: First fastening part

[0069] 131c: Second fastening part; 131d: Connecting part

[0070] 132: Rotating bracket; 132a: Guide hole

[0071] 132a1: First positioning segment; 132a2: Drive segment

[0072] 132a3: Second positioning section; 132b: Limiting hole

[0073] 132c: Trigger element; 132d: Transmission boss

[0074] 132e: Transmission hole; 133: Transmission connector

[0075] 133a: Rotation center 133b: Free end

[0076] 133c: Connecting shaft; 134: Drive motor

[0077] 134a: Motor shaft; 136: Float component

[0078] 137: Guide connector; 137a: Stud.

[0079] 140: Position detection device; 141: Locked position detection device

[0080] 142: Unlock position detection device; 160: Lid closing hook.

[0081] AX: Rotation axis; AX1: First axis

[0082] AX2: Second axis; P1: First extreme position

[0083] P2: Second extreme position; R1: First rotation direction

[0084] R2: Second rotation direction; Pt1: First center point

[0085] Pt2: Second center point; Pt3: Third center point

[0086] Pt4: Fourth center point; D1: Front and back direction.

[0087] D2: Left / Right direction; D3: Height direction Detailed Implementation

[0088] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention 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 in order to avoid confusion with embodiments of the present invention.

[0089] To fully understand the embodiments of this utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this utility model is not limited to the specific details familiar to those skilled in the art.

[0090] 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 the invention. The singular forms “a,” “an,” and “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.

[0091] The ordinal numbers such as "first" and "second" used in this utility model are merely identifiers and do not have any 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 utility model are for illustrative purposes only and are not intended to be limiting.

[0092] The specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, which show representative embodiments of the present invention and are not intended to limit the present invention.

[0093] like Figures 1 to 12 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 100, a lid 110, a position detection device 140, a drive motor 134, and a control circuit board 116.

[0094] The pot body 100 is used for cooking food. The lid 110 is used to cover the pot body 100. For example, the lid 110 is connected to the pot body 100 in an openable and closable manner to cover the pot body 100. When the lid 110 covers the pot body 100, a cooking space is formed between the lid 110 and the pot body 100.

[0095] See Figure 2The pot body 100 includes a pot inner 101, a middle frame 102, a heating device (not shown), a base, and a temperature detection device (not shown). The pot inner 101, used for holding food, is removably installed in the pot body 100. 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 103 and is fixed to the base 103, suitable for positioning the pot inner 101 and also serving a heat insulation function. When the lid 110 closes the pot body 100, a cooking space is formed between the lid 110 and the pot inner 101. The heating device is located below the pot inner 101 to heat the pot inner 101.

[0096] The control circuit board 116 includes a control unit, a digital display device, and circuitry. The control unit, for example, can be a microcontroller unit (MCU) used to control the cooking process of the cooking appliance. Figure 2 As shown, the control circuit board 116 can be installed in the cover 110.

[0097] A temperature detection device is used to detect the temperature of the cooking space or related to the cooking space. The temperature detection device includes a bottom temperature detection device and a top temperature detection device. The bottom temperature detection device is located, for example, at the bottom or side of the pot body, to detect the temperature of the bottom of the pot or indirectly the bottom of the cooking space. The top temperature detection device is located, for example, at the lid body, to detect the temperature of the top of the cooking space. Both the heating element 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, allowing the control unit to perform more precise control of, for example, the heating element, based on the temperature information.

[0098] See Figures 1 to 4 ,as well as Figure 5 and Figure 6 One end of the lid 110 in the front-rear direction D1 is rotatably connected to the pot body 100 via a pivot shaft about the rotation axis AX. An opening torsion spring 104 is mounted on the pivot shaft. Both ends of the opening torsion spring 104 abut against the lid 110 and the pot body 100 respectively, allowing the opening torsion spring 104 to apply an elastic force to the lid 110 away from the pot body 100. When the lid 110 is opened, it springs upward under the elastic force of the opening torsion spring 104 and rotates about the pivot shaft. The other end of the lid 110 in the front-rear direction D1 is detachably connected to the pot body 100 via a lid-closing hook 160.

[0099] See Figures 2 to 4The lid 110 includes a top cover 111, a liner 112, and an inner cover 113. In addition, the lid 110 may also include electrical components, valve components, etc. Therefore, the assembly of the top cover 111, liner 112, and inner cover 113 can also be referred to as the lid body 117. It is understood that the lid body 117 may only have the degree of freedom to rotate about the axis of rotation AX relative to the cookware body 100. The top cover 111 is located at the outermost (i.e., uppermost) side of the lid 110, forming the outer shell of the lid 110. The top cover 111 may include a top cover body 111a and a panel 111b. The liner 112 is disposed below the top cover 111 and connected to the top cover 111. For example, the liner 112 can be connected to the top cover 111 via fasteners, snap-fit ​​connectors, etc. The liner 112 is mainly used to centrally mount various functional components of the lid 110 that sense and control the working status of the pressure cooking appliance, such as sensors. The inner cover 113 is located at the innermost (i.e., lowest) side of the cover body 110 and is positioned below the liner 112. The inner cover 113 is detachably connected to the liner 112 via a snap-fit ​​or other detachable connector for easy cleaning and replacement; here, the inner cover 113 can be referred to as a removable cover. The inner cover 113 is positioned facing the cooking space. That is, when the cover body 110 is closed on the pot body 100, the inner cover 113 is positioned directly above the cooking space. Furthermore, an inner cover sealing ring 1131 is provided on the outer periphery of the inner cover 113. The inner cover sealing ring 1131 is used to seal the gap between the inner cover 113 and the pot body 101 when the inner cover 113 is closed with the pot body 101.

[0100] See Figure 4 The cover 110 is equipped with a steam valve 114 and an electric pressure relief device 120. The steam valve 114 has a steam vent (not shown in the figure) that communicates with the outside environment. A steam passage 110a, communicating with the steam valve 114, is also provided inside the cover 110. The cooking space is connected to the external environment through the steam passage 110a and the steam valve 114. The external environment refers to the environment outside the pressure 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 electric pressure relief device 120 is electrically connected to a control unit and is controlled to switch between an open state (open steam passage 110a) and a closed state (closed steam passage 110a).

[0101] To reduce heat loss during cooking, the pot body 100 includes the aforementioned heat-insulating cover, such as... Figure 2 As 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. 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 example of the fastening element 131 engaging with the edge of the inner pot 101.

[0102] See Figures 2 to 6 The cooking appliance may also include a locking / unlocking assembly 130 and a power source. The locking / unlocking assembly 130 is connected to the power source to switch between a locked state and an unlocked state under the drive of the power source. In the locked state, the locking / unlocking assembly 130 prevents the inner cover 113 of the lid body 110 from separating from the inner pot 101. In the unlocked state, the locking / unlocking assembly 130 allows the inner cover 113 to separate from the inner pot 101. The inner cover 113 has a radial direction and an axial direction. The radial direction is the radial direction of a circle about the geometric center of the inner cover 113. The axial direction is the direction passing through the geometric center of the inner cover 113 and parallel to the thickness direction of the inner cover. Here, the geometric center of the inner cover 113, in the example where the inner cover is circular, is the exact center of the inner cover or the center of the circle. The locking / unlocking assembly 130 includes a fastening member 131. The fastening member 131 is movably connected to the lid body 110 in the locked and unlocked positions along the radial direction of the inner cover 113. The lid-opening assembly 130 is locked when the fastener 131 is in the locked position. The lid-opening assembly 130 is unlocked when the fastener 131 is in the unlocked position. The fastener 131 may include a clamp for receiving the edges of the inner pot 101 and the inner lid 113. When the fastener 131 is in the locked position, the edges of the inner pot 101 and the inner lid 113 are clamped in the clamp 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 fastener 131 is in the unlocked position, the clamp disengages from at least one of the edges of the inner pot 101 and the inner lid 113. Preferably, the fastener 131 in the unlocked position disengages from the inner pot 101. The power source may be a drive motor 134. The drive motor 134 is drivenly connected to the fastener 131. The drive motor 134 is connected to the control unit to drive the fastener 131 to move between the locked position and the unlocked position under the control of the control unit.

[0103] See Figures 2 to 8Furthermore, the cover opening assembly 130 may also include a rotating frame 132. 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 132a. The extending direction of the guide hole 132a intersects the radial direction of the cover body 110. The extending direction may be a straight line, a curve, or a combination of both. The extending direction has at least a portion inclined to the radial direction of the cover body 110, thereby enabling the drive fastener 131 to move radially within the cover body 110. The fastener 131 is movably connected to the guide hole 132a. The rotating frame 132 is driveably connected to a drive motor 134. As the drive motor 134 drives the rotating frame 132 to rotate, the fastener 131 slides relative to the rotating frame 132 along the extending direction of the guide hole 132a, thereby enabling the drive fastener 131 to move between a locked position and an unlocked position.

[0104] See Figures 3 to 6 Optionally, the fastening member 131 is connected to the guide hole 132a via a guide connector 137. The guide connector 137 is connected to the fastening member 131. The guide connector 137 is located in the guide hole 132a and is movable relative to the guide hole 132a. During the rotation of the rotating frame 132, the fastening member 131 slides relative to the rotating frame 132 along the extension direction of the guide hole 132a through the sliding engagement of the guide connector 137 and the guide hole 132a, 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.

[0105] See Figure 11 and Figure 12Exemplarily, the cover 112 is provided with a guide cavity 112a. A fastener 131 is slidably mounted on the guide cavity 112a. The guide cavity 112a may be configured as a groove recessed upward from the lower surface of the cover 112. The cover 112 also has a guide hole 112b communicating with the guide cavity 112a. A guide connector 137 passes through the guide hole 112b. The guide connector 137 includes a stud 137a and a screw. The stud 137a is connected to the top of the fastener 131. The stud 137a passes through the guide hole 112b and the guide hole 132a and is connected to the screw. The guide cavity 112a and the guide hole 112b may extend radially about a first axis AX1. The fastener 131 may include a first fastening portion 131b, a second fastening portion 131c, and a connecting portion 131d. A connecting portion 131d connects between the first fastening portion 131b and the second fastening portion 131c. Specifically, both ends of the connecting portion 131d are connected to the ends of the first fastening portion 131b and the second fastening portion 131c that are away from the cooking space. The first fastening portion 131b, the second fastening portion 131c, and the connecting portion 131d together form a clamp with an opening facing the first axis AX1. The clamp is used to accommodate the edge of the inner lid 113 and the edge of the pot liner 101. The first fastening portion 131b is used to restrict the upward movement of the inner lid 113 when pressed up in the cooking space. The second fastening portion 131c is used to restrict the downward movement of the pot liner 101 when pressed up in the cooking space. In the radial direction of the inner lid 113, the first fastening portion 131b is longer than the second fastening portion 131c. Furthermore, the end of the first fastening portion 131b that is at least away from the connecting portion 131d is located directly above the inner cover 113, thereby preventing the fastening member 131 from jamming with the inner cover during the movement towards the locked position. When the cover 110 is closed on the pot body 100, the second fastening portion 131c 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 the movement towards the locked position.

[0106] See Figures 2 to 6 ,as well as Figure 10Furthermore, the cover-opening assembly 130 may also include a drive transmission assembly. The drive transmission assembly is connected between the rotating frame 132 and the motor shaft 134a 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 portion 133a and a free end 133b. The rotation center portion 133a is rotatably connected to the cover 110 about a second axis AX2. The rotation center portion 133a is connected to the motor shaft 134a of the drive motor 134 to rotate synchronously with the motor shaft 134a. The free end 133b 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 134a of the drive motor 134, the transmission connector 133 rotates in the same direction as the motor shaft 134a of the drive motor 134. During the rotation of the motor shaft 134a of the drive motor 134, the rotation direction of the transmission connector 133 is opposite to the rotation direction of the rotating frame 132. For example... Figure 5 and Figure 6 As shown, the motor shaft 134a 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 134a 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 134a 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.

[0107] See Figure 3 , Figures 5 to 8 Optionally, the rotating frame 132 is provided with a trigger 132c. 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 132c in the circumferential direction around the first axis AX1. The unlocking position detection device 142 is located on the other side of the trigger 132c in the circumferential direction around the first axis AX1. The trigger 132c 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 5The 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 132c 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 connector 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 6 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 132c 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.

[0108] Optionally, the drive motor 134 is located at one end of the cover 110 in the front-rear direction D1, near the rotation axis AX. The drive motor 134 is also located in the middle of the cover 110 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 110 in the left-right direction D2, particularly on the same side of the cover 110 as the drive motor 134 in the left-right direction D2.

[0109] 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 110.

[0110] See Figures 2 to 10Furthermore, the rotating frame 132 has a transmission hole 132e. The transmission connector 133 also has a connecting shaft 133c. The connecting shaft 133c is inserted into the transmission hole 132e. The transmission hole 132e provides allowance for the connecting shaft 133c to move radially relative to the rotating frame 132. For example, the transmission hole 132e can be configured as an elongated hole extending radially in a circle centered on the first axis AX1, to allow the connecting shaft 133c to move within the transmission hole 132e, thereby preventing jamming of the rotation of the rotating frame 132 and the rotation of the transmission connector 133. The transmission hole 132e can be a through hole or a blind hole. The transmission hole 132e is located at the edge of the rotating frame 132. While the connecting shaft 133c drives the rotating frame 132 to rotate, it can slide or move within the transmission hole 132e along its length. The transmission hole 132e and the aforementioned trigger 132c are arranged circumferentially around the first axis AX1.

[0111] It is understandable that in other examples, the positions of the transmission hole and the connecting shaft can be interchanged; that is, the transmission hole can be set in the transmission connector, and the connecting shaft can be set in the rotating frame.

[0112] See Figure 3 , Figures 5 to 8 In addition, the rotating frame 132 also includes a drive boss 132d. The drive boss 132d has an engaged state that engages with the lid latch 160 and a disengaged state that is separated from the lid latch 160. In the engaged state, the drive boss 132d prevents external force from successfully pressing the lid opening button (not shown), thereby preventing the lid 110 from being opened. In the disengaged state, the drive boss 132d allows external force to successfully press the lid opening button, thereby allowing the lid 110 to be opened under the elastic force of the lid opening torsion spring 104. Specifically, when the lid 110 is closed on the pot body 100, when the rotating frame 132 rotates in the second rotation direction R2 (the motor shaft 134a rotates in the first rotation direction R1) to the fourth limit position, the fastener 131 moves to the locked position, and the drive boss 132d engages with the lid latch 160. With the lid 110 closed on the pot body 100, when the rotating frame 132 rotates along the first rotation direction R1 (the motor shaft 134a rotates in the second rotation direction R2) to the third extreme position, the fastening member 131 moves to the unlocked position, and the transmission boss 132d separates from the lid latch 160. It should be noted that the angle at which the rotating frame 132 rotates from the third extreme position to the fourth extreme position is less than or equal to the central angle corresponding to the circle centered on the first axis AX1 with the guide hole 132a. The central angle corresponding to the circle centered on the first axis AX1 with the transmission boss 132d can be less than or equal to the central angle corresponding to the guide hole 132a.

[0113] See Figure 3 , Figures 5 to 8Optionally, the cover 112 has a float mounting hole (not shown). A float component 136 is installed in the float mounting hole. A rotating frame 132 is located between the cover 112 and the top cover 111. The rotating frame 132 has a limiting hole 132b. When the fastener 131 is in the locked position, the limiting hole 132b and the float mounting hole are aligned. When the cooking space is pressed up, the float component 136 moves upward and inserts into the limiting hole 132b. At this time, the float component 136 is connected to the float mounting hole and the limiting hole 132b, which can prevent the rotating frame 132 from rotating. This prevents the rotating frame 132 from rotating when the cooking space is pressed up. When the cooking space is under normal pressure, the float component 136 disengages from the limiting hole 132b. At this time, the rotating frame 132 can rotate relative to the cover 112.

[0114] Ideally, the guide connector 137 on the fastener 131 moves along the guide hole 132a. When it reaches the end of the drive section 132a2, the fastener 131 is in the locked or unlocked position. However, there are installation errors between the moving parts. For example, there are gaps and tolerances between the guide connector 137 and the guide hole 132a, gaps and tolerances at the rotation shaft of the rotating frame 132, tolerances caused by deformation of the rotating frame 132 during use, tolerances in the assembly of the guide connector 137 and the fastener 131, tolerances in the actuation or triggering of detection components such as microswitches, dimensional tolerances of inner pot misalignment and inner pot opening diameter, and cumulative fit tolerances of various parts. These installation errors or tolerances can lead to false detection problems. Specifically, when the rotating frame 132 has rotated to a specific angle, and the detection components such as microswitches have detected a signal indicating that the fastener is locked or unlocked, especially locked, the fastener 131 may not actually have moved to the set locked or unlocked position. If the guide hole 132a only drives the segment 132a2, and the rotating frame 132 only rotates to the angle required for the fastener 131 to move to the locked or unlocked position under normal circumstances, there may be a situation where the fastener 131 does not move into place, but the position detection component detects the position signal, resulting in inaccurate detection.

[0115] Regarding the solution to the problem of false detections, please refer to the following: Figures 1 to 12 The cooking appliances provided in the embodiments of this application are further described.

[0116] According to the cooking appliance of this embodiment, the rotation stroke of the rotating rack 132 includes a driving stroke and a safety stroke. The guide hole 132a of the rotating rack 132 includes a communicating positioning section and a driving section 132a2. The positioning section may be a first positioning section 132a1 or a second positioning section 132a3. The rotating rack 132 includes a trigger member 132c.

[0117] When the rotating frame 132 is in the drive stroke, the guide connector 137 moves along the drive section 132a2 and drives the fastener 131 to move to the locked position or the unlocked position.

[0118] When the rotating frame 132 is at the end of its safe travel, the guide connector 137 moves to the positioning section, which restricts the fastener from moving to the unlocked or locked position.

[0119] The position detection device 140 is configured to detect whether the fastener 131 is in the locked position and / or unlocked position. When the rotating frame 132 is at the end of the drive stroke or the safety stroke, the trigger 132c triggers the position detection device 140.

[0120] To address the aforementioned technical problems, the inventive concept of this application is to add a safety margin position segment at the end of the drive segment 132a2. Simultaneously, one rotation stroke of the rotating frame includes both a drive stroke and a safety stroke. The safety margin position segment is referred to below as the positioning segment. During the drive stroke, the rotating frame drive guide connector slides in the drive segment of the guide hole, thereby moving the fastener to the unlocked or locked position. After completing the drive stroke, the rotating frame continues to rotate at a certain angle; this rotation process constitutes the safety stroke.

[0121] If there are no errors such as installation or deformation, when the guide connector 137 has completed the drive segment 132a2 and is located at the end of the drive segment 132a2, the rotating frame has completed the entire drive stroke, and the fastening member 131 is in the locked or unlocked position. This is called the normal situation. If the above-mentioned error exists, when the rotating frame 132 rotates to the end position of the drive stroke, the guide connector 137 may still be located at a certain position of the drive segment 132a2. The fastening member 131 is fixedly connected to the guide connector 137, causing it not to move to the locked or unlocked position. This is called the abnormal situation. Based on this, the rotating frame 132 rotates further, switching from the drive stroke to the safety stroke. Under normal circumstances, the guide connector 137 will move into the positioning section, which only restricts the radial movement of the guide connector 137. Under abnormal circumstances, the further rotation of the rotating frame will push the guide connector 137 located in the drive section 132a2 to continue moving. At the final position of the safety stroke, the guide connector 137 moves into the positioning section, thereby finally causing the fastener 131 to move to the locked or unlocked position.

[0122] The trigger 132c on the rotating frame 132 can trigger the position detection device at the end of the drive stroke. The control unit can receive the position detection signal first. Even if the latching member 131 is not in place, the rotating frame 132 will continue to rotate, and the latching member 131 will definitely move to the locked or unlocked position, thus ensuring the accuracy of the detection result. Accordingly, the control unit can delay for a few seconds after receiving the signal before proceeding to the next control program. Of course, the trigger 132c can also trigger the position detection device at any position within the safe stroke of the rotating frame 132, and is not limited to one method.

[0123] The functions of the positioning segment include:

[0124] 1. Improved tolerance performance, adaptable to tolerances under different conditions, and more reliable. Specifically, the positioning section allows the rotating frame 132 to continue rotating, thereby allowing the guide connector 137 that has moved to the end of the drive section 132a2 to move an additional distance, while allowing the guide connector 137 that has not moved to the end of the drive section 132a2 to continue moving towards the positioning section, and eventually to at least the end of the drive section 132a2, ensuring that all fasteners 131 eventually move to the locked or unlocked position.

[0125] 2. Limiting function. It can prevent the fastener 131 from moving out of the locked or unlocked position under the action of external force. If there is only the drive section 132a2, the fastener 131 can be easily moved by pushing it by hand or by other external forces.

[0126] According to the cooking appliance of this application, during rotation, the rotating rack 132 can drive the guide connector 137 to move along the guide hole, thereby causing the fastener 131 to move between the locked position and the unlocked position. When the rotating rack 132 is in the drive stroke, the guide connector 137 drives the fastener 131 to move towards the locked position or the unlocked position. When the rotating rack 132 is in the safety stroke, it can hold the fastener 131 that has moved to the locked position or the unlocked position in the locked position or the unlocked position, and can cause the fastener 131 that has not reached the locked position or the unlocked position to continue to move towards the locked position or the unlocked position by the continued rotation of the rotating rack 132 in the safety stroke. When the rotating rack 132 reaches the end position of the safety stroke, it ensures that all fasteners 131 have reached the locked position or the unlocked position. The triggering element triggers the position detection device 140 at the end position of the drive stroke or the safety stroke, thereby facilitating the determination of whether the fastener 131 is in the locked position or the unlocked position. The position detection device 140 is triggered by the triggering element when the rotating frame 132 has just completed its drive stroke or safety stroke. At this time, the fastening element 131 may or may not have moved to the locked or unlocked position. When the rotating frame 132 rotates during its safety stroke, the guide connector 137 of the fastening element 131 that was not previously in the locked position continues to slide along the drive section. This allows the fastening element 131 that was not in the locked or unlocked position during the drive stroke to move to the locked position during the safety stroke. Meanwhile, the fastening element 131 that was previously in the locked or unlocked position remains stationary. This ensures that after the rotating frame 132 has completed its entire stroke, the fastening element 131 is definitely in the locked or unlocked position. In this way, the signal received by the position detection device 140 can represent the position status of the fastening element 131, thereby reducing the probability of false detection or misjudgment by the position detection device 140.

[0127] Optionally, the guide hole 132a includes a first positioning segment 132a1 and a second positioning segment 132a3. The first positioning segment 132a1 and the second positioning segment 132a3 are located at opposite ends of the drive segment 132a2. When the guide connector 137 is located in the first positioning segment 132a1, the fastening member 131 is in the locked position. When the guide connector 137 is located in the second positioning segment 132a3, the fastening member 131 is in the unlocked position.

[0128] According to this application, the fastener 131 is held in the locked position by the first positioning segment 132a1, and the fastener 131 is held in the unlocked position by the second positioning segment 132a3.

[0129] Optionally, the end of the drive segment 132a2 near the first positioning segment 132a1 is designated as the first switching end. The first switching end can be understood as a part of the drive segment 132a2 and located at the boundary between the drive segment 132a2 and the first positioning segment 132a1. Under normal circumstances, when the guide connector 137 is located at the first switching end, the fastening member 131 is in the locked position. The end of the drive segment 132a2 near the second positioning segment 132a3 is designated as the second switching end. The second switching end can be understood as a part of the drive segment 132a2 and located at the boundary between the drive segment 132a2 and the second positioning segment 132a3. Under normal circumstances, when the guide connector 137 is located at the second switching end, the fastening member 131 is in the unlocked position.

[0130] According to this application, since the fastening member 131 is in the locked position when the guide connector 137 is in the first switching end, the fastening member 131 can be held in the locked position when the guide connector 137 is in the first positioning section 132a1. Since the fastening member 131 is in the unlocked position when the guide connector 137 is in the second switching end, the fastening member 131 can be held in the unlocked position when the guide connector 137 is in the second positioning section 132a3.

[0131] Optionally, the rotating frame 132 is rotatably connected to the cover 110 about the first axis AX1. The fastening member 131 is movably connected to the cover 110 in a radial direction perpendicular to the first axis AX1. Here, the radial direction specifically refers to the radial direction of a circle centered on the first axis AX1. The first switching end and the second switching end are arranged at intervals in a circumferential direction centered on the first axis AX1. Furthermore, the distance between the first switching end and the first axis AX1 is less than the distance between the second switching end and the first axis AX1.

[0132] According to this application, with this configuration, when the guide connector 137 moves towards the first switching end in the drive section 132a2, the fastening member 131 moves radially towards the direction close to the first axis AX1, thereby realizing the fastening member 131 moving towards the locked position. When the guide connector 137 moves towards the second switching end in the drive section 132a2, the fastening member 131 moves radially away from the first axis AX1, thereby realizing the fastening member 131 moving towards the unlocked position.

[0133] Optionally, the rotational stroke of the rotating frame 132 includes a locking safety stroke and an unlocking safety stroke. When the rotating frame 132 is in the locking safety stroke, the guide connector 137 can move to the first positioning section. When the rotating frame 132 is in the unlocking safety stroke, the guide connector 137 can move to the second positioning section. The position detection device 140 includes a locking position detection device 141 and an unlocking position detection device 142. The locking position detection device 141 is configured to detect whether the fastener 131 is in the locked position. When the rotating frame 132 is in the locking safety stroke, the trigger 132c triggers the locking position detection device 141. The unlocking position detection device 142 is configured to detect whether the fastener 131 is in the unlocked position. When the rotating frame 132 is in the unlocking safety stroke, the trigger 132c triggers the unlocking position detection device 142.

[0134] According to this application, since the trigger 132c triggers the locking position detection device 141 when the rotating frame 132 is in the locking safety stroke, and triggers the unlocking position detection device 142 when the rotating frame 132 is in the unlocking safety stroke, the accuracy of detecting and determining whether the fastener 131 is in the locking position and / or unlocking position can be improved.

[0135] Optionally, the rotating frame 132 is rotatably connected to the cover 110 about the first axis AX1. The fastening member 131 is movably connected to the cover 110 in the radial direction centered on the first axis AX1. The extension trajectory of the first positioning segment 132a1 is an arc centered on the first axis AX1. The extension trajectory of the second positioning segment 132a3 is an arc centered on the first axis AX1.

[0136] According to this application, since the rotating frame 132 rotates about the first axis AX1 and the fastening member 131 can move in the radial direction centered on the first axis AX1 relative to the cover 110, by setting the first positioning segment 132a1 as an arc centered on the first axis AX1, the fastening member 131 can be held in the locked position when the guide connector 137 is located in the first positioning segment 132a1, and by setting the second positioning segment 132a3 as an arc centered on the first axis AX1, the fastening member 131 can be held in the unlocked position when the guide connector 137 is located in the second positioning segment 132a3.

[0137] Optionally, the rotating frame 132 is rotatably connected to the cover 110 about the first axis AX1. The rotating frame 132 includes at least two guide holes 132a. Each guide hole 132a is arranged circumferentially with the first axis AX1 as the center. The end of the drive section 132a2 near the positioning section is the switching end.

[0138] When the rotating frame 132 rotates to the end position of the safe travel, the trigger 132c triggers the position detection device 140, and all the guide connectors 137 are located in the positioning section. Alternatively, when the rotating frame 132 rotates to the end position of the rotation travel, the trigger 132c triggers the position detection device 140, some of the guide connectors 137 are located in the positioning section, and some of the guide connectors 137 are located in the drive section.

[0139] According to this application, when the rotating frame 132 has at least two guide holes 132a, if the tolerances between each fastening member 131 and the rotating frame 132 are consistent or differ only slightly, then when the rotating frame 132 rotates to the end position of its rotation stroke, the trigger member 132c triggers the position detection device 140, and all guide connecting members 137 are located in the positioning section. When the rotating frame 132 has at least two guide holes 132a, if the tolerances between each fastening member 131 and the rotating frame 132 differ significantly, then when the rotating frame 132 rotates to the end position of its rotation stroke, the trigger member 132c triggers the position detection device 140, some guide connecting members 137 are located in the positioning section, and some guide connecting members 137 are at the switching end of the drive section 132a2. Thus, by setting a positioning section, the influence of tolerances on the movement of the fastening member 131 to the locked or unlocked position can be effectively eliminated.

[0140] Optionally, the end of the drive section 132a2 near the positioning section is the switching end. When the rotating frame 132 rotates to the initial position of the safe travel, the guide connector 137 is located at the switching end or the part of the drive section other than the switching end. When the rotating frame 132 rotates to the end position of the safe travel, the guide connector 137 is located at the switching end or the positioning section, and the trigger 132c triggers the position detection device 140.

[0141] According to this application, due to installation errors between the aforementioned components, when the rotating frame 132 is at the initial position of the safe travel, the guide connector 137 can be located at the switching end or other drive section 132a2 parts besides the switching end. When the rotating frame 132 is at the end position of the safe travel, the guide connector 137 is located at the switching end or the positioning section, and the trigger 132c can trigger the position detection device 140. When the rotating frame 132 completes its safe travel, the guide connector 137 is a cylindrical sleeve, the center of which can also be located at the switching end, which is the initial position of the positioning section. With this configuration, it can be ensured that the trigger 132c triggers the position detection device 140 when the rotating frame 132 rotates to its limit position, thereby helping to reduce the probability of false detection and improve the reliability of position detection.

[0142] Optionally, the rotating frame 132 is rotatably connected to the cover 110 about a first axis AX1. The trigger 132c is configured as a protrusion extending radially outward from the edge of the rotating frame 132 along the first axis AX1. The locking position detection device 141 and the unlocking position detection device 142 are located at both ends of the stroke of the trigger 132c as it rotates with the rotating frame 132.

[0143] According to this application, by setting the trigger 132c as a protrusion extending outward in the radial direction from the edge of the rotating frame 132, and arranging the locking position detection device 141 and the unlocking position detection device 142 at both ends of the rotation stroke of the trigger 132c, it is possible to reduce the space occupied on the upper and / or lower side of the rotating frame 132 while achieving the purpose of position detection, and it also helps to reduce the thickness of the cover.

[0144] Optionally, the position detection device 140 is a micro switch. The trigger 132c triggers the position detection device 140 during at least a portion of contact with it.

[0145] According to this application, when a micro switch is selected as the position detection device, the continued rotation of the rotating frame 132 within its safe travel range ensures that the latching member 131 is in the locked or unlocked position when the trigger member 132c abuts against and triggers the micro switch or when a position signal is issued. This makes the triggering of the micro switch reliable and accurate, improving the accuracy of position detection. At the same time, using a micro switch also helps reduce costs.

[0146] When the rotating frame 132 is at the initial position of the safe travel, there can be a certain gap between the trigger element 132c on the rotating frame 132 and the spring of the micro switch. This gap is usually set to 0.1mm to 10mm, such as 1mm, 2mm, 3mm, etc. As the rotating frame 132 rotates further, the trigger element 132c gradually contacts the spring and further compresses the spring. At the end position of the safe travel, the trigger element 132c completely compresses the spring and fits against the fixed part of the micro switch. Alternatively, when the guide connector 137 is at the end position of the drive section 132a2, the gap between the trigger element 132c and the spring of the micro switch is zero, and the further rotation of the rotating frame 132 directly triggers the micro switch.

[0147] For example, the rotating frame 132 needs to rotate 20° during the process of driving the fastening member 131 from the unlocked position to the locked position. The 0° to 2° is the unlocking safety stroke. Under normal circumstances, during this process, the guide positioning member 137 moves from the second positioning section 132a3 to the second switching end, and the guide positioning member 137 moves towards the locked position. The 2° to 18° is the driving stroke. Under normal circumstances, the guide connecting member 137 moves along the driving section 132a2. When the rotating frame 132 moves to the 18° position, the fastening member 131 moves to the locked position, and the rotating frame 132 can directly trigger the micro switch. The 18° to 20° is the locking safety stroke. Under normal circumstances, the guide connecting member 137 can move to the first positioning section 132a1. Those guide connecting members 137 that do not move normally can move from the driving section 132a2 to the first switching end or the first positioning section 132a1 during this stage. Of course, the micro switch can also be triggered at any position during this stage.

[0148] Optionally, from the moment the trigger 132c just contacts the micro switch serving as the locking position detection device 141 until the rotating frame 132 stops rotating, the distance the trigger 132c moves can be in the range of 0.2mm to 20mm, such as 1mm, 2mm, etc.

[0149] Optionally, from the moment the trigger 132c contacts the micro switch serving as the locking position detection device 141 until the rotating frame 132 stops rotating, the rotation angle of the rotating frame 132 can be taken in the range of 0.1° to 10°.

[0150] See Figure 9For example, drive segment 132a2 has a first center point Pt1 and a second center point Pt2 spaced along its extended trajectory. The first center point Pt1 is located at a first switching end of drive segment 132a2. The second center point Pt2 is located at a second switching end of drive segment 132a2. 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 extended trajectory of drive segment 132a2 has arbitrarily adjacent first arbitrary position points (not shown) and second arbitrary position points (not shown) arranged sequentially in a circumferential direction centered on the first axis AX1. The first arbitrary position point is closer to the first center point Pt1 than the second arbitrary position point. The distance between the first arbitrary position point and the first axis AX1 is less than or equal to the distance between the second arbitrary position point and the first axis AX1. In other words, in the direction moving from the first center point Pt1 towards the second center point Pt2, the distance between drive segment 132a2 and the first axis AX1 increases. When the fastening member 131 moves relative to the rotating frame 132 towards the first center point Pt1 via the guide connector in the drive section 132a2, the fastening member 131 can move towards the locked position. When the fastening member 131 moves relative to the rotating frame 132 towards the second center point Pt2 via the guide connector in the drive section 132a2, the fastening member 131 can move towards the unlocked position.

[0151] The first center point Pt1 is closer to the first positioning segment 132a1 than the second center point Pt2. The first positioning segment 132a1 has an extension trajectory along which the third center point Pt3 and the first center point Pt1 are spaced apart. That is, the extension trajectory of the first positioning segment 132a1 coincides with the extension trajectory of the drive segment 132a2 at the first center point Pt1. 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. The extension trajectory of the first positioning segment 132a1 is an arc centered on the first axis AX1 with a radius equal to the distance between the first center point Pt1 and the first axis AX1, so that the first positioning segment 132a1 can hold the fastener 131 in the locked position.

[0152] The first center point Pt1 is farther away from the second positioning segment 132a3 than the second center point Pt2. The second positioning segment 132a3 has an extension trajectory along which the second center point Pt2 and the fourth center point Pt4 are spaced apart. The extension trajectory of the second positioning segment 132a3 coincides with the extension trajectory of the drive segment 132a2 at the second center point Pt2. The distance between the second center point Pt2 and the first axis AX1 is equal to the distance between the fourth center point Pt4 and the first axis AX1. The extension trajectory of the second positioning segment 132a3 is an arc centered on the first axis AX1 with a radius equal to the distance between the second center point Pt2 and the first axis AX1, thereby enabling the second positioning segment 132a3 to hold the fastener 131 in the unlocked position.

[0153] According to the cooking appliance of this application, the drive section 132a2 is used to drive the guide connector 137 to move along with the fastening member 131, and the positioning section is used to enable the rotating frame 132 to continue rotating to overcome tolerance and other factors, and to trigger the position detection device 140 by the trigger member 132c. This allows for the generation of a position detection signal while ensuring that all fastening members 131 are in position, thus improving the accuracy of position detection. Furthermore, by dividing the guide hole 132a into the drive section 132a2 and the positioning section, it is advantageous to control the output torque of the drive motor 134 according to the stroke position of the rotating frame 132. For example, during the drive stroke, each guide connector 137 is basically in the drive section 132a2, so the drive motor 134 can be controlled to output a larger torque during the drive stroke. During the safe stroke, since at least some of the guide connectors 137 reach the positioning section, and the force required for the trigger member 132c to trigger the micro switch is small (excessive force may damage the micro switch), the torque required for the rotating frame 132 is small, thereby allowing the drive motor 134 to output a smaller torque. This allows for reasonable control of the output torque of the drive motor 134 based on the different strokes of the rotating frame 132, which helps reduce the energy consumption of the drive motor 134, protects position detection components such as microswitches, and extends the service life of the drive motor 134.

[0154] 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 the invention. Terms such as “set” 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 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.

[0155] This utility model 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 utility model 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 utility model, and all such variations and modifications fall within the scope of protection claimed by this utility model.

Claims

1. A cooking utensil, characterized in that, The cooking appliance includes: Claypot(100); A lid (110) is provided on the pot body (100) in an openable and closable manner; A rotating frame (132) is rotatably connected to the cover (110). The rotation stroke of the rotating frame (132) includes a driving stroke and a safety stroke. The rotating frame (132) includes a guide hole (132a), which includes a positioning section and a driving section (132a2) that are connected to each other. The rotating frame (132) includes a trigger element (132c). Fastener (131), which is translatably connected to the cover (110) between a locked position and an unlocked position; A guide connector (137) is movably connected to the guide hole (132a) and fixedly connected to the fastener (131). When the rotating frame (132) is in the drive stroke, the guide connector (137) moves along the drive section (132a2) and drives the fastener (131) to move towards the locked position or the unlocked position. When the rotating frame (132) is at the end of the safe stroke, the guide connector (137) moves to the positioning section, which restricts the fastener from moving towards the unlocked position or the locked position. A position detection device (140) is configured to detect whether the fastener (131) is in the locked position and / or the unlocked position, and the trigger (132c) triggers the position detection device (140) when the rotating frame (132) is in the end position of the drive stroke or the safety stroke.

2. The cooking utensil according to claim 1, characterized in that, The guide hole (132a) includes a first positioning segment (132a1) and a second positioning segment (132a3), the first positioning segment (132a1) and the second positioning segment (132a3) being located at opposite ends of the drive segment (132a2). When the guide connector (137) is located in the first positioning section (132a1), the fastening member (131) is located in the locked position; when the guide connector (137) is located in the second positioning section (132a3), the fastening member (131) is located in the unlocked position.

3. The cooking utensil according to claim 2, characterized in that, The end of the drive segment (132a2) near the first positioning segment (132a1) is the first switching end. When the guide connector (137) is located at the first switching end, the fastening member (131) is located at the locking position. The end of the drive segment (132a2) near the second positioning segment (132a3) is the second switching end. When the guide connector (137) is located at the second switching end, the fastening member (131) is located at the unlocked position.

4. The cooking utensil according to claim 3, characterized in that, The rotating frame (132) is rotatably connected to the cover (110) about the first axis (AX1). The fastening element (131) is movably connected to the cover (110) in a radial direction perpendicular to the first axis (AX1). The first switching terminal and the second switching terminal are arranged circumferentially around the first axis (AX1), and the distance between the first switching terminal and the first axis (AX1) is less than the distance between the second switching terminal and the first axis (AX1).

5. The cooking utensil according to claim 2, characterized in that, The rotation stroke of the rotating frame (132) includes a locking safety stroke and an unlocking safety stroke. When the rotating frame (132) is in the locking safety stroke, the guide connector can move to the first positioning segment. When the rotating frame (132) is in the unlocking safety stroke, the guide connector can move to the second positioning segment. The position detection device (140) includes a locked position detection device (141) and an unlocked position detection device (142). The locked position detection device (141) is configured to detect whether the fastener (131) is in the locked position. When the rotating frame (132) is in the locked safety stroke, the trigger (132c) triggers the locked position detection device (141). The unlocked position detection device (142) is configured to detect whether the fastener (131) is in the unlocked position. When the rotating frame (132) is in the unlocked safety stroke, the trigger (132c) triggers the unlocked position detection device (142).

6. The cooking utensil according to claim 2, characterized in that, The rotating frame (132) is rotatably connected to the cover (110) about the first axis (AX1); The fastener (131) is movably connected to the cover (110) in a radial direction centered on the first axis (AX1); The extension trajectory of the first positioning segment (132a1) is an arc centered on the first axis (AX1); The extension trajectory of the second positioning segment (132a3) is an arc centered on the first axis (AX1).

7. The cooking utensil according to claim 1, characterized in that, The rotating frame (132) is rotatably connected to the cover (110) around a first axis (AX1). The rotating frame (132) includes at least two guide holes (132a), each guide hole (132a) being arranged circumferentially at intervals around the first axis (AX1). The end of the driving section (132a2) near the positioning section is a switching end. When the rotating frame (132) rotates to the end position of the safe travel, the trigger (132c) triggers the position detection device (140), and all of the guide connectors (137) are located in the positioning section, or some of the guide connectors (137) are located in the positioning section and some of the guide connectors (137) are located at the switching end of the drive section.

8. The cooking utensil according to claim 1, characterized in that, The end of the drive segment (132a2) closest to the positioning segment is the switching end. When the rotating frame (132) rotates to the initial position of the safety stroke, the guide connector (137) is located at the switching end or the part of the drive section other than the switching end; When the rotating frame (132) rotates to the end position of the safe travel, the guide connector (137) is located at the switching end or the positioning section, and the trigger (132c) triggers the position detection device (140).

9. The cooking utensil according to claim 5, characterized in that, The rotating frame (132) is rotatably connected to the cover (110) about the first axis (AX1). The trigger (132c) is constructed as a protrusion extending outward from the edge of the rotating frame (132) in a radial direction centered on the first axis (AX1). The locking position detection device (141) and the unlocking position detection device (142) are located at both ends of the stroke of the trigger (132c) as it rotates with the rotating frame (132).

10. The cooking utensil according to claim 1, characterized in that, The position detection device (140) is a micro switch, and the trigger (132c) triggers the position detection device (140) during the process of abutting at least a portion of the position detection device (140).

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