Cooking utensil

Abstract

The utility model discloses a cooking utensil, a cover locking and opening assembly of the cooking utensil comprises a rotating frame, a buckling piece and a transmission arm, and the rotating frame is rotatably arranged around a first axis extending in the vertical direction; the buckling pieces are arranged at intervals in the circumferential direction based on the first axis, are movably connected to the rotating frame and can move between a locking position and an unlocking position in the radial direction based on the first axis along with rotation of the rotating frame; the driving end of the transmission arm is used for being connected to a driving source, the driven end of the transmission arm is connected to the rotating frame, and the transmission arm is rotatably arranged around a second axis which is located at the driving end and parallel to the first axis. The fastener has fewer transmission structural components, and the transmission form relates to two rotary motions and one linear motion, so that the transmission form is simple; the transmission arm can transmit large torque and torque, and can have a rotation angle larger than that of the rotating frame in the radial movement of the buckling piece, so that the driving force provided by the driving source is smaller and more labor-saving.

Description

Technical Field

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

[0002] Existing pressure cooking appliances, such as pressure rice cookers, have a sealing ring on the lid to form a seal at the rim of the inner pot. However, during cooking, the pressure within the cooking space becomes very high, causing the sealing ring and the rim to leak due to the pressure. To prevent leakage at the rim, some cooking appliances have radially movable fasteners on the lid. These fasteners lock the rim in place, ensuring a seal between the sealing ring and the rim. However, the radial movement of these fasteners involves too many transmission components, resulting in a complex and labor-intensive transmission mechanism.

[0003] Therefore, a cooking appliance is needed to at least partially solve the above problems. Utility Model Content

[0004] The description of this utility model introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This description 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.

[0005] To at least partially solve the above problems, this utility model provides a cooking appliance, which includes a lid and a pot body. The lid is closable and can be opened and closed on the pot body to form a cooking space between the lid and the pot body. The lid includes an inner lid assembly and a locking / unlocking assembly. The locking / unlocking assembly is located above the inner lid assembly and includes:

[0006] A rotating frame, which is rotatably mounted about a first axis extending in a vertical direction;

[0007] Fastening elements, arranged circumferentially spaced along a first axis, are movably connected to a rotating frame and movable radially along the first axis between a locked position and an unlocked position as the rotating frame rotates; and

[0008] The transmission arm has an active end for connecting to a drive source and a driven end for connecting to a rotating frame to drive the rotating frame to rotate. The transmission arm is rotatably arranged about a second axis located at the active end and parallel to the first axis.

[0009] According to this solution, the transmission arm can transmit the driving force from the drive source to the rotating frame through rotation. The rotating frame then transmits this force to each fastening component, causing the fastening components to move radially. This radial movement of the fastening components locks and unlocks the inner pot. The transmission structure of the fastening components has fewer parts and involves two rotational motions and one linear motion, resulting in a simple transmission method. Furthermore, the transmission arm can transmit larger torques and moments, and it can have a larger rotation angle than the rotating frame during the radial movement of the fastening components, thus requiring less driving force from the drive source.

[0010] Optionally, the transmission arm is located at the rear of the rotating frame, with the first axis on the center line extending in the front-rear direction of the rotating frame, and the second axis on or off the center line. According to this design, the space at the rear of the cover can be used to install the transmission arm and connecting structures, resulting in higher space utilization. Furthermore, both the first and second axes are arranged based on the center line in the front-rear direction, allowing the transmission arm and rotating frame to be designed and operated with reference to this center line for left and right rotation.

[0011] Optionally, the rotating frame has a first rotation radius r1, and the transmission arm has a second rotation radius r2, where r1 > r2. According to this scheme, the rotation angle of the transmission arm in the radial movement of the fastening member can be greater than the rotation angle of the rotating frame in the radial movement of the fastening member, so as to achieve a smaller and more effortless drive from the drive source; the rotating frame has a larger size, which allows the size of the fastening member to be designed to be smaller, and the smaller size of the fastening member allows for more flexible radial movement, making it easier to fasten with the inner pot.

[0012] Optionally, the ratio of the first rotation radius r1 to the second rotation radius r2, r1 / r2, is 2.5 ≤ r1 / r2 ≤ 8.5. According to this scheme, a smaller and more effortless drive source can be achieved. If the ratio of the rotation radius of the rotating frame to the transmission arm is too small, the size of the transmission arm will be too large. Due to the constraints of the internal space of the cover, the overall size of the rotating frame is small, resulting in a large size of the fastening component, making the linear movement of the fastening component more laborious. If the ratio of the rotation radius of the rotating frame to the transmission arm is too large, the size of the transmission arm will be too small, causing the second axis of the transmission arm to be too close to the rotating frame, resulting in low torque and moment, and requiring more effort.

[0013] Optionally, one of the rotating frame and the transmission arm is provided with a connecting hole, and the other of the rotating frame and the transmission arm is provided with a connecting rod, which is movably disposed within the connecting hole. According to this solution, the connecting hole can provide the transmission arm with radial movement space based on the first axis, and the connecting rod pushes the rotating frame to rotate under the constraint of the connecting hole, making the force transmission smoother and more reliable, and avoiding deformation of the rotating frame under force.

[0014] Optionally, the connection hole is provided on the rotating frame and is configured to be elongated, and the elongated connection hole extends radially along the first axis. The body of the rotating frame has a certain dimension in the radial direction, facilitating the setting of the elongated connection hole, thereby avoiding occupying the rotation radius of the transmission arm and making the transmission of the transmission arm more labor-saving.

[0015] The rotating frame has a rotation angle α1 when the fastening member moves between the locked position and the unlocked position, and the transmission arm has a rotation angle α2 when the fastening member moves between the locked position and the unlocked position. The connection hole is configured to allow the rotation angles of both the transmission arm and the rotating frame to satisfy the following relationship: 2 ≤ α2 / α1 ≤ 6. According to this solution, a smaller and more labor-saving drive of the drive source can be further achieved; if the ratio of the rotation angle of the transmission arm to that of the rotating frame is too small, the size of the rotating frame is large, which is not conducive to the layout of the internal space of the cover body; if the ratio of the rotation angle of the transmission arm to that of the rotating frame is too large, the overall size of the rotating frame is small, resulting in a large size of the fastening member and making the linear movement of the fastening member relatively laborious.

[0016] Optionally, there is a fitting clearance between the connecting rod and the connection hole in at least one of the length direction and the width direction of the connection hole, and / or between the transmission arm and the rotating frame in the height direction. According to this solution, the existence of the fitting clearance can prevent the connecting rod from being stuck due to the deformation of the rotating frame under force, and the movement of the connecting rod can proceed smoothly to successfully drive the rotation of the rotating frame.

[0017] Optionally, the connecting rod has a first fitting clearance L1 with the connection hole in the width direction of the connection hole, where 0 < L1 ≤ 2 mm. According to this solution, it can prevent the connecting rod from being stuck in the width direction of the connection hole, and the width of the connection hole will not be too large to avoid the connecting rod coming out of the connection hole. The connecting rod has a second fitting clearance L2 with the connection hole in the length direction of the connection hole, where 2 ≤ L2 ≤ 5 mm. According to this solution, it can prevent the connecting rod from being stuck in the length direction of the connection hole, and the connection hole can provide a moving space for the transmission arm in the radial direction based on the first axis, making the transmission of force more stable and reliable and avoiding the deformation of the rotating frame under force. The transmission arm has a third fitting clearance L3 with the rotating frame in the height direction, where 0 < L3 ≤ 2 mm. According to this solution, it can prevent the driven end of the transmission arm from being stuck by the rotating frame in the height direction.

[0018] Optionally, the lockable cover opening and closing assembly further includes a drive motor as the drive source, and the output shaft of the drive motor is connected to the active end of the transmission arm. According to this solution, the movement of the transmission arm, the rotating frame and the fastening member is realized by electric drive, which improves the automation level of the product and the user experience. [[ID=,14]]

[0019] Optionally, the driving end of the transmission arm has a hole through which it is fitted onto the output shaft. The outer circumferential surface of the output shaft has a locking recess, and the inner wall of the hole has a locking boss, which engages with the locking recess. Alternatively, the output shaft can be bonded to the driving end with adhesive. This design prevents the transmission arm from loosening and detaching from the output shaft over time, ensuring a more secure and reliable installation. The locking structure allows the transmission arm to be separated from the drive motor for easy replacement and maintenance. The adhesive method simplifies the bonding process and reduces costs.

[0020] Optionally, the drive motor is a stepper motor. According to this solution, the stepper motor has high transmission accuracy, which can improve the rotation accuracy of the transmission arm and the rotating frame, thereby accurately controlling the radial movement distance of the fastening parts and ensuring that the fastening parts have a better locking effect with the pot opening when locked.

[0021] Optionally, the drive arm includes a mounting post, an outer periphery, and multiple connecting ribs. The mounting post is used to connect to the drive source, and the multiple connecting ribs are arranged at intervals in the circumferential direction based on the second axis. The outer periphery is connected to the mounting post through the multiple connecting ribs. According to this solution, the connecting ribs can strengthen the structure of the mounting post, allowing for a smaller diameter design. The gaps between adjacent connecting posts prevent dimensional inaccuracies caused by excessively thick mounting post material.

[0022] Optionally, the rotating frame includes a guide connector and transmission holes corresponding to the fastening members. The guide connector is connected to the fastening members and slidably connected within the corresponding transmission holes. The transmission holes are configured to guide the fastening members to move radially between a locked position and an unlocked position when the rotating frame rotates. According to this solution, the rotation of the rotating frame is transmitted to the fastening members via the guide connector. The guide connector can slide relative to the fastening members within the transmission holes, which convert the rotational motion of the rotating frame into the linear motion of the fastening members. When the rotating frame rotates, the fastening members are pushed radially under the guidance of the transmission holes.

[0023] Optionally, the rotating frame includes a ring-shaped frame body and support beams. The support beams are staggered and connect the frame bodies at different positions to form clearance gaps. Fasteners are connected to the frame bodies, and the support beams are rotatably fixed at positions traversed by the first axis. According to this solution, the clearance gaps on the rotating frame provide installation / accommodation space for electrical components, devices, and other electrical or mechanical structures at the rotating frame, preventing interference between these structures and the rotating frame, and improving the utilization rate of the internal space of the cover. Attached Figure Description

[0024] The following drawings, which are incorporated herein by reference as part of this invention, are provided for understanding the invention. The drawings illustrate embodiments of the invention and their descriptions, serving to explain the principles of the invention.

[0025] In the attached image:

[0026] Figure 1 A cross-sectional view of a cooking appliance according to a preferred embodiment of this application;

[0027] Figure 2 for Figure 1 An exploded view of the cooking appliance shown;

[0028] Figure 3 For viewing from the rear side Figure 1 A perspective view of the cooking appliance shown, with the lid removed;

[0029] Figure 4 for Figure 3 The diagram shows a top view of the cover, with the faceplate removed, and positions P1 and P2 indicated by dashed lines;

[0030] Figure 5 for Figure 4 Another top view of the partial cover shown, with positions P3 and P4 indicated by dashed lines;

[0031] Figure 6 for Figure 3 The diagram shows a cross-sectional view of the cover, with the front cover removed.

[0032] Figure 7 for Figure 3 A top view of the transmission arm and drive motor shown;

[0033] Figure 8 for Figure 7 The cross-sectional view of the transmission arm and drive motor shown; and

[0034] Figure 9 Viewed from the front side Figure 1 A perspective view of the cooking appliance shown, with the lid removed and the rotating rack in position P4;

[0035] Figure 10 Viewed from the front side Figure 1 Another perspective view of the cooking appliance shown, with the lid removed and the rotating rack in position P3;

[0036] Figure 11 for Figure 9 The diagram shows a structural schematic of the cover opening assembly, the anti-opening assembly, and the button assembly, wherein the fastener is in the locked position;

[0037] Figure 12 for Figure 10 Another structural diagram of the cover opening assembly, the anti-opening assembly, and the button assembly shown is displayed, in which the fastener is located in the unlocked position;

[0038] Figure 13 for Figure 12 The diagram shows the structure of the rotating frame;

[0039] Figure 14 For the state of being partially dissected Figure 1 A perspective view of the cooking appliance shown, with the fasteners in the locked position;

[0040] Figure 15 for Figure 14 A magnified view of point I in the image;

[0041] Figure 16 for Figure 12 A cross-sectional view of the connecting rod and connecting hole shown;

[0042] Figure 17 for Figure 14 The diagram shows a partial view of the cover at the transmission arm.

[0043] Explanation of reference numerals in the attached figures:

[0044] 100: Pot body 101: Inner pot

[0045] 102: Heating device; 103: Button assembly

[0046] 104: Button; 105: Lower hook component

[0047] 106: First elastic element; 107: Base

[0048] 108: Outer shell 109: Middle plate

[0049] 110: Cover body; 110a: Steam passage

[0050] 110b: Pressure relief channel; 111: Face cover

[0051] 112: Liner; 113: Inner cover assembly

[0052] 113a: Inner cover; 113b: Retaining ring

[0053] 113c: Boiler nozzle sealing ring; 114: Steam valve

[0054] 115: Upper hook fitting; 116: Steam seal fitting

[0055] 120: Electric pressure relief device; 120a: Pressure relief assembly

[0056] 120b: Electric drive assembly; 121: Pressure ball

[0057] 122: Electric drive component; 123: Push rod

[0058] 130: Cover locking and opening assembly; 131: Fastening component

[0059] 132: Rotating frame; 132a: Transmission hole

[0060] 132b: Limiting hole; 132c: Frame body

[0061] 132d: Support beam; 132e: Connecting hole

[0062] 132f: Propulsion Unit; 132g: Clearing Gaps

[0063] 133: Drive arm; 133a: Drive end

[0064] 133a1: Snap-fit ​​boss; 133b: Driven end

[0065] 133c: Connecting rod; 134: Drive motor

[0066] 134a: Output shaft; 134b: Snap-fit ​​recess

[0067] 135: Force transmission component; 136: Float device

[0068] 137: Guide connector 101a: Pot opening

[0069] 140: Stop-opening component; 141: Limit lever

[0070] 141a: Stop part; 141b: Transmission part

[0071] 141c: Transmission surface; 142: Pivot

[0072] 143: Second elastic element; 151: Mounting column

[0073] 152: Outer periphery; 153: Connecting rib. Detailed Implementation

[0074] 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 the present invention can 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 the present invention.

[0075] To fully understand this invention, a detailed description will be provided below. Obviously, the implementation of this invention is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this invention are described in detail below; however, other embodiments may also be possible besides these detailed descriptions.

[0076] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that 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.

[0077] The ordinal numbers such as "first" and "second" used in this utility model 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 herein are for illustrative purposes only and are not intended to be limiting. The terms "parallel" / "perpendicular" and similar expressions used in this application encompass both absolute parallel / perpendicular relationships and approximately parallel / perpendicular relationships (e.g., relationships differing from absolute parallel / perpendicular relationships by a range of -5° to +5°), and have equivalent effects.

[0078] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of the present invention is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art.

[0079] like Figures 1 to 15 As shown, this application provides a cooking appliance. The cooking appliance may include a pot body 100 and a lid 110. 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.

[0080] The pot body 100 includes a pot inner 101 and a heating device 102. The pot inner 101, used to hold food, is removably installed in the pot body 100. 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 102 is located at the bottom of the pot body 100, below the pot inner 101, to heat the food in the pot inner 101. The pot body 100 also includes a base 107, an outer shell 108, and a middle plate 109 that form spaces for accommodating the pot inner 101, heating device 102, etc. The upper end of the outer shell 108 is connected to the middle plate 109, and its lower end is connected to the base 107. The middle plate 109 and the base 107 are internally connected by a plurality of screw posts and a plurality of screws.

[0081] The lid 110 is rotatably connected to the pot body 100 via a pivot about a rotation axis AX. The rotation axis AX is located at one end of the pot body 100 in the front-rear direction D1. A torsion spring is mounted on the pivot, with its two ends abutting against the lid 110 and the pot body 100 respectively, allowing the torsion spring 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 torsion spring and rotates about the pivot.

[0082] The cover 110 includes a top cover 111, a liner 112, and an inner cover assembly 113. The top cover 111 is located on the outermost (i.e., uppermost) side of the cover 110, forming the outer shell of the cover 110. The liner 112 is located below the top cover 111 and is connected to it. For example, the liner 112 can be connected to the top cover 111 via fasteners or snap-fits. The liner 112 is primarily used to centrally mount various functional components of the cover 110 that sense and control the operating status of the cooking appliance, such as sensors. The inner cover assembly 113 is located on the innermost (i.e., lowermost) side of the cover 110 and is located below the liner 112. The inner cover assembly 113 is detachably connected to the liner 112, for example, via snap-fits, for easy cleaning and replacement. Alternatively, the inner cover assembly 113 can also be non-detachably connected to the liner 112, for example, via fasteners such as rivets. The inner cover assembly 113 includes an inner cover 113a, a retaining ring 113b, and a pot opening sealing ring 113c. The pot opening sealing ring 113c is fixed to the outer periphery of the inner cover 113a by the retaining ring. When the cover is closed, the pot opening sealing ring 113c abuts against the pot opening 101a of the inner pot 101 to form a seal.

[0083] The cover 110 is provided with a channel assembly for forming a steam passage 110a. Exemplarily, the channel assembly includes a steam valve 114 and a steam seal 116. The steam valve 114 has a vent (not shown) communicating with the outside environment. The cooking space communicates with the external environment through the steam passage 110a to release steam generated during cooking. The steam seal 116 is located below the steam valve 114 and forms a seal between the steam valve 114 and the inner cover 113a.

[0084] The cooking appliance also includes an electrically operated pressure relief device 120. The electrically operated pressure relief device 120 is located on the lid 110 and is used to open and close the steam passage 110a. See also... Figure 2 , Figures 4 to 6 For example, the electric pressure relief device 120 may include a pressure relief assembly 120a having a steam venting passage 110b and an electric drive assembly 120b capable of opening and closing the steam venting passage 110b. The pressure relief assembly 120a is disposed within and communicates with the steam passage 110a in the inner cover assembly 113, and is removable from the cover along with the inner cover assembly 113. The electric drive assembly 120b is disposed in the liner and located on one side of the steam passage 110a in the horizontal direction. Exemplarily, the pressure relief assembly 120a includes a pressure ball 121 for sealing the steam venting passage 110b. The electric drive assembly 120b drives the pressure ball 121 to move between an open position (opening the steam venting passage 110b) and a closed position (closing the steam venting passage 110b). When the pressure ball 121 is in the open position, the steam venting passage 110b is opened, and the steam passage 110a communicates with the cooking space via the steam venting passage 110b. When the pressure ball 121 is in the closed position, the steam venting passage 110b is blocked by the pressure ball 121, and the steam passage 110a is not connected to the cooking space in order to realize the cooking function that requires pressurization or pressure increase.

[0085] The electric drive assembly 120b includes an electric drive element 122 and a push rod 123. One end of the push rod 123 is connected to the output shaft of the electric drive element 122, and the other end abuts against a pressure ball 121. The electric drive element 122 drives the push rod to move linearly to keep the pressure ball 121 in the open position. When the force of the push rod 123 is removed, the pressure ball 121 returns to the closed position under gravity. Optionally, the electric drive element 122 is a push-pull electromagnet.

[0086] See Figure 2 , Figure 4 and Figure 5The cooking appliance may also include a locking / unlocking assembly 130, which enables a tighter seal between the pot opening sealing ring 113c and the pot opening portion 101a. The locking / unlocking assembly 130 includes two or more fastening elements 131, a rotating frame 132, and a drive motor 134. The two or more fastening elements 131 are arranged circumferentially spaced along the inner lid assembly 113, or the inner lid 113a, and each fastening element 131 partially extends beyond the outer periphery of the inner lid assembly 113. The fastening elements 131 are radially movable along the inner lid assembly 113, or the inner lid 113a, between a locked position and an unlocked position. When the fastening element 131 is in the locked position, it engages / hooks onto / encloses the pot opening portion 101a of the inner pot 101 from below, clamping the pot opening portion 101a and the outer periphery of the inner lid assembly 113. This ensures a tighter seal between the pot opening sealing ring 113c and the pot opening 101a, preventing insufficient pressure due to air leakage and thus affecting cooking performance. When the fastener 131 is in the unlocked position, it disengages from the pot opening 101a, allowing the lid to be opened. The rotating frame 132 is rotatably connected to the liner 112 about the first axis AX1 between the third extreme position P3 and the fourth extreme position P4. The first axis AX1 extends vertically and passes through the center of the inner cover assembly 113, or more precisely, through the center of the inner cover 113a. The fastener 131 is movably connected to the rotating frame 132 and moves radially as the rotating frame 132 rotates. The drive motor 134 drives the rotating frame 132 to rotate.

[0087] It should be noted that the circumferential and radial directions of the inner lid assembly 113 / inner lid 113a in this article are based on the first axis AX1, and therefore can also be described as circumferential and radial directions based on the first axis AX1. In order to hook the pot opening 101a, the fastening member 131 may include a clamp for accommodating the pot opening 101a of the inner pot 101 and the outer periphery of the inner lid assembly 113.

[0088] Continue reading Figures 2 to 5 , Figures 9 to 13 The rotating frame 132 is provided with two or more transmission holes 132a corresponding to the fastening member 131. The fastening member 131 is slidably connected to the transmission hole 132a along its extension direction. When the rotating frame 132 rotates, the fastening member 131 moves within the transmission hole and is guided by the transmission hole to move radially between a locked position and an unlocked position. The transmission hole can convert the rotational motion of the rotating frame 132 into the linear motion of the fastening member 131. The transmission hole is an elongated hole and includes at least a straight segment, the angle between the extension direction of the straight segment and the radial direction of the inner cover 113a extending through the fastening member 131 is an acute angle. The rotating frame 132 is drive-connected to the drive motor 134. When the rotating frame 132 rotates to the third limit position P3, the fastening member 131 is in the unlocked position. When the rotating frame 132 rotates to the fourth limit position P4, the fastening member 131 is in the locked position.

[0089] See Figure 4 , Figure 5 The fastening member 131 is connected to the corresponding transmission hole 132a via a guide connector 137. The guide connector 137 may include fasteners such as screws or bolts. The guide connector 137 is connected to the fastening member 131. The guide connector 137 is located within the transmission hole 132a and is movable relative to the transmission hole 132a. The transmission of the rotating frame is transmitted to the fastening member 131 via the guide connector, which is capable of sliding relative to the transmission hole. During the rotation of the rotating frame 132, the fastening member 131 achieves radial movement within the inner cover assembly 113 through the sliding engagement of the guide connector 137 and the transmission hole 132a.

[0090] See Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figures 10 to 12 The cooking appliance may also include a transmission component, through which the output shaft 134a of the drive motor 134 can be connected to the rotating frame 132 to drive the rotating frame 132 to rotate. The transmission component is configured as a rotatable transmission arm 133. Exemplarily, the transmission arm 133 has opposite active ends 133a and driven ends 133b. The transmission arm 133 is rotatable about a second axis AX2 located at the active end, and the driven end 133b is connected to the rotating frame 132 and drives the rotating frame 132 to rotate. The second axis AX2 extends vertically and is parallel to the first axis AX1. The active end is connected to a drive source. During the rotation of the transmission arm 133 in the first rotation direction R1, the rotating frame 132 rotates in the second rotation direction R2, opposite to the first rotation direction R1, causing the fastener 131 to move towards the locked position. During the rotation of the transmission arm 133 in the second rotation direction R2, the rotating frame 132 rotates in the first rotation direction R1, causing the fastener 131 to move towards the unlocked position.

[0091] The transmission arm 133 can transmit the driving force from the drive source to the rotating frame 132 through rotation. The rotating frame 132 then transmits the force to each fastening member 131 through rotation, causing the fastening members 131 to move radially. The radial movement of the fastening members 131 can lock and unlock the inner pot. The transmission structure of the fastening members 131 has fewer components and involves two rotational motions and one linear motion, resulting in a simple transmission method. Furthermore, the transmission arm 133 can transmit larger torques and moments, and can have a larger rotation angle than the rotating frame 132 during the radial movement of the fastening members 131, thus requiring less driving force from the drive source.

[0092] The transmission arm 133 is located at the rear of the rotating frame 132. The space at the rear of the cover can be utilized to house the transmission arm 133 and its connecting structure, resulting in higher space utilization. The first axis AX1 lies on the centerline CL extending along the front-rear direction of the rotating frame 132, and the second axis AX2 lies on or slightly deviates from the centerline CL. Both the first axis AX1 and the second axis AX2 are arranged based on the centerline CL along the front-rear direction, allowing both the transmission arm 133 and the rotating frame 132 to be designed and operated with reference to this centerline CL for left and right rotation. It should be noted that due to manufacturing and installation errors of the drive motor, the second axis AX2 may deviate slightly from the centerline CL. Furthermore, this slight deviation from the centerline CL has the advantage of a tighter cover latch.

[0093] The illustration shows a drive motor as the driving source. The active end 133a is connected to the output shaft 134a of the drive motor 134 to receive the rotational force of the drive motor and rotate the transmission arm 133. The transmission arm 133 rotates in the same direction as the output shaft 134a of the drive motor 134, and in the opposite direction to the rotation of the rotating frame 132. The power of the drive motor 134 is transmitted to the rotating frame 132 through the transmission arm 133, which facilitates the reasonable arrangement of the positions of the rotating frame 132 and the drive motor 134. Optionally, the drive motor 134 is a stepper motor. Stepper motors have high transmission accuracy, which can improve the rotational accuracy of the transmission arm 133 and the rotating frame 132, thereby accurately controlling the radial movement distance of the fastening member 131 and ensuring a better locking effect between the fastening member 131 and the pot opening 101a of the inner pot 101 when locked.

[0094] See Figure 2 , Figure 3 , Figures 4 to 12 Optionally, the drive motor 134 can drive the transmission arm 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 third limit position P3, and thus causing the fastening member 131 to move to the unlocked position. The drive motor 134 can also drive the transmission arm 133 to rotate along the first rotation direction R1 to the second limit position P2, thereby causing the rotating frame 132 to rotate to the fourth limit position P4, and thus causing the fastening member 131 to move to the locked position.

[0095] Alternatively, the drive source can be a manual actuator. See also Figure 3 , Figures 4 to 7 , Figures 9 to 12The cooking appliance may also include a force transmission element 135. This force transmission element 135 is connected to the drive end 133a. By manually applying a torsional force to the drive arm 133 at the force transmission element 135, the rotating frame 132 can be driven to rotate, thereby moving the latch 131 to the unlocked position. Here, the force transmission element 135 can be configured as a lever. The force transmission element 135 or the component connected thereto is exposed from the cover so that the consumer can toggle it to rotate the drive arm 133.

[0096] See Figure 7 and Figure 8 Optionally, the driving end 133a has a hole for connecting the output shaft 134a of the drive motor 134. The output shaft 134a is inserted into the hole of the driving end 133a. Exemplarily, the output shaft 134a also has a locking recess 134b, and correspondingly, the inner wall of the hole in the driving end 133a has a locking boss 133a1. The locking boss 133a1 engages within the locking recess 134b. Through the cooperation of the locking recess 134b and the locking boss 133a1, the driving end 133a and the output shaft 134a can be locked together to prevent the driving end 133a from detaching from the output shaft 134a. Alternatively, the output shaft 134a can be bonded to the driving end 133a with an adhesive.

[0097] The drive arm 133 may include a mounting post 151, an outer periphery 152, and multiple connecting ribs 153. The mounting post 151 is used to connect to a drive source. The multiple connecting ribs 153 are arranged at intervals in the circumferential direction based on the second axis AX2. The outer periphery 152 is connected to the mounting post 151 through the multiple connecting ribs 153. The connecting ribs 153 can strengthen the structure of the mounting post 151, allowing for a smaller diameter design. The gaps between adjacent connecting posts prevent shrinkage due to excessive material thickness, ensuring dimensional accuracy. Due to the connecting ribs 153, the dimension of the drive arm 133 at the driven end 133b is smaller than that at the driving end 133a. Furthermore, the width of the drive arm 133 gradually changes along its length, and the outer periphery 153 is arc-shaped at both the driving end 133a and the driven end 133b. The overall outer contour of the drive arm 133 is more aesthetically pleasing.

[0098] See Figure 12 and Figure 13The rotating frame 132 has a connecting hole 132e. The transmission arm 133 also has a connecting rod 133c. The connecting rod 133c is inserted into the connecting hole 132e. The connecting hole 132e provides a play that allows the connecting rod 133c to move radially relative to the rotating frame 132. Under the constraint of the connecting hole, the connecting rod 133c pushes the rotating frame 132 to rotate, making the force transmission smoother and more reliable, and preventing the rotating frame 132 from deforming under force. For example, the connecting hole 132e can be configured as an elongated shape extending radially based on the first axis AX1, such as an oblong hole, a square hole with rounded corners, etc. The elongated connecting hole 132e extends radially based on the first axis AX1. The connecting hole 132e can be a through hole or a blind hole. The connecting hole 132e is located at the edge of the rotating frame 132. The body of the rotating frame 132 has a certain size in the radial direction, which makes it easy to set the elongated connecting hole 132e, thereby avoiding occupying the rotation radius of the transmission arm 133, and making the transmission of the transmission arm 133 more labor-saving.

[0099] It is understandable that in other examples, the positions of the connecting hole 132e and the connecting rod 133c can be interchanged; that is, the connecting hole 132e can be located in the transmission arm 133, and the connecting rod 133c can be located in the rotating frame 132. The connecting rod 133c is cylindrical and its outer diameter can be greater than or equal to 6mm to prevent deformation under stress.

[0100] See Figure 4 and Figure 5 Optionally, the cover 110 also includes a float device 136, with a corresponding through hole in the inner cover 113a. The float device 136 controls the pressure within the cooking space via this through hole. A rotating frame 132 is located between the liner 112 and the top cover 111. The rotating frame 132 has a limiting hole 132b at a distance offset from the first axis AX1. When the fastener 131 is in the locked position, the limiting hole 132b and the float device 136 are aligned. When pressure is applied to the cooking space, the float in the float device 136 moves upward and inserts into the limiting hole 132b. This prevents the rotating frame 132 from rotating. When the cooking space is under normal pressure, the float disengages from the limiting hole 132b. At this time, the rotating frame 132 can rotate relative to the liner 112.

[0101] See Figure 11 and Figure 13For example, the rotating frame 132 includes an annular frame body 132c and support beams 132d. The support beams 132d are staggered and connect to the frame bodies 132c at different positions to form clearance gaps 132g. Two or more fasteners 131 are connected to the frame bodies 132c. The support beams 132d are rotatably connected to the cover 112 at positions through which the first axis AX1 passes. These clearance gaps 132g are designed to avoid interference with electrical structures or mechanical structures such as electrical components, devices, and electrical elements located between the rotating frame 132 and the cover 112, or between the rotating frame 132 and the faceplate 111.

[0102] See Figure 4 , Figure 5 , Figures 9 to 12 , Figures 14 to 15 Optionally, the pot body 100 includes a button assembly 103 and a stop-open assembly 140. The button assembly 103 is located at the front end of the pot body 100. The button assembly 103 is configured to automatically switch to a locked state after the lid 110 is closed with the pot body 100, and to switch to an unlocked state when pressed by an external force, thereby facilitating the opening of the lid 110. The stop-open assembly 140 is used to prevent the button assembly 103 from switching from the locked state to the unlocked state. The rotating frame 132 may include a pushing part 132f. The pushing part 132f is used to abut against the stop-open assembly 140 during the rotation of the rotating frame 132 around the first axis AX1, so that the stop-open assembly 140 can abut against the button assembly 103 when the lid 110 is closed with the pot body 100, thereby preventing or allowing the button assembly 103 from switching from the locked state to the unlocked state.

[0103] With the lid 110 closed on the pot body 100, when the rotating bracket 132 rotates to the position where the fastening member 131 is in the locked position, the pushing part 132f abuts against the anti-opening component 140, preventing the button assembly 103 from switching from the locked state to the unlocked state. This adds an extra layer of safety to the cooking appliance, preventing the button assembly 103 from being accidentally operated when the fastening member 131 is in the locked position, thus improving the safety of the cooking appliance.

[0104] See Figures 9 to 12Specifically, the button assembly 103 may include a button 104, a lower hook 105, and a first elastic element 106. The button 104 is connected to the lower hook 105. The first elastic element 106 is connected to either the button 104 or the lower hook 105, and is used to directly or indirectly reset the button 104 automatically. That is, the first elastic element 106 is the button's reset elastic element. After the button 104 is reset, the button assembly 103 is in a locked state. The lower hook 105 is rotatably connected to the body 100 at its center, and its lower part is connected to the button. The lower hook 105 is rotatable in the inward and outward directions about a third axis AX3 extending horizontally. The cover 110 is provided with an upper hook 115. The lower hook 105 can rotate between the position where it is hooked onto the upper hook 115 and the position where it is disengaged from the upper hook 115, thereby achieving the purpose of locking and unlocking.

[0105] The stop assembly 140 is in the stop position where the hook 105 is disengaged from the upper hook 115 (see [reference]). Figure 11 ) and the clearance position that allows the lower hook 105 to disengage from the upper hook 115 (see Figure 12 The locking assembly 140 is movably positioned between the upper hook and the lower hook 115. When the lid 110 is closed and the cooking space is pressurized, the locking assembly 140 prevents the lower hook 105 from rotating, keeping it in the locked position hooked to the upper hook 115. This avoids the risk of burns from high-pressure gas due to accidental opening of the lid, improving product safety. Under normal pressure, the locking assembly 140 moves away from the lower hook 105 when the lid is opened, without restricting its rotation, allowing the lid to be opened after unlocking.

[0106] See Figure 11 , Figure 12 , Figure 15The stop assembly 140 is disposed on the cover 112 and located on the front side of the pusher 132f in the circumferential direction. Exemplarily, the stop assembly 140 may include a limiting lever 141, a pivot 142, and a second elastic member 143. The middle portion of the limiting lever 141 is rotatably connected to the cover 112 via the pivot 142 about a fourth axis AX4. The fourth axis AX4 passes through the middle portion of the limiting lever 141 and extends in the front-rear direction, intersecting the circumferential reference line of the pusher 132f. The limiting lever 141 is rotatable between a stop position that prevents the lower hook 105 from disengaging from the upper hook 115 and a clearance position that allows the lower hook 105 to disengage from the upper hook 115. When pushed by the pusher 132f, the limiting lever 141 rotates to the stop position, at which point the lower portion of the limiting lever 141 abuts against the lower hook 105. When the limiting lever 141 separates from the pushing part 132f, it rotates to the avoidance position, at which point the lower part of the limiting lever 141 moves away from the lower hook member 105. A second elastic member 143 is connected between the limiting lever 141 and the cover 112, and is used to apply an elastic force to the limiting lever 141 to rotate towards the avoidance position. In other words, the second elastic member 143 is a reset elastic member for the limiting lever 141. The second elastic member 143 can be, for example, a torsion spring.

[0107] The movement of the stop assembly 140 is achieved through the pusher 132f on the rotating frame 132. Specifically, the limit lever 141 is pushed up and down by the circumferentially moving pusher 132f, thereby blocking and releasing the lower hook 105. The limit lever 141 is separate from the rotating frame 132, allowing these two components to be manufactured and spatially arranged separately, which helps to simplify the structure and optimize the space of the internal components of the cover; the transmission form between the rotating frame 132 and the limit lever 141 is simple and the transmission reliability is higher.

[0108] Specifically, the limiting lever 141 includes a stop portion 141a and a transmission portion 141b located on both sides of the fourth axis AX4. The stop portion 141a and the transmission portion 141b move in opposite directions in the height direction D3. The transmission portion 141b extends horizontally and can abut against the pushing portion 132f in the height direction D3, while the stop portion 141a extends partially downward to abut against the lower hook member 105. The stop portion 141a moves downward until its lower part is located outside the lower hook member 105 to restrict the outward rotation of the lower hook member 105. The limiting lever 141 has a horizontal portion and a vertical portion. The pushing portion 132f of the horizontal portion can cooperate with the transmission portion 141b in the height direction D3, and the stop portion 141a of the vertical portion extends into or away from the position of the lower hook member 105. The overall structure of the limiting lever 141 is simple and easy to manufacture. The transmission unit 141b has a downward-facing transmission surface 141c, which is configured to gradually extend upward from one end near the fourth axis AX4. For example, the transmission surface 141c is an inclined surface, a curved surface, or an arc surface. The surface of the pushing unit 132f that contacts the transmission surface 141c is an inclined surface, a curved surface, or an arc surface with a small circumferential dimension. The pushing unit 132f can abut against the transmission surface 141c from below to push the transmission unit 141b upward. The stop part 141a extends into or away from the lower hook member 105 from the upper side.

[0109] See back Figure 4 and Figure 5 The rotating frame 132 has a first rotation radius r1, and the transmission arm 133 has a second rotation radius r2, where r1 > r2. The rotation angle of the transmission arm 133 in the radial movement of the fastening member 131 can be greater than the rotation angle of the rotating frame 132 in the radial movement of the fastening member 131, so as to achieve a smaller and more effortless drive source; the rotating frame 132 has a larger size, which allows the size of the fastening member 131 to be designed to be smaller. The smaller size of the fastening member 131 allows for more flexible radial movement and facilitates fastening with the inner pot.

[0110] Optionally, the ratio of the first rotation radius r1 to the second rotation radius r2, r1 / r2, is 2.5 ≤ r1 / r2 ≤ 8.5. Suitable values ​​for r1 / r2 include 2.5, 3, 4, 5, 5.6, 6, 7, 8, and 8.5. This allows for a smaller and more effortless drive source. If the ratio of the rotation radius of the rotating frame 132 to the transmission arm 133 is too small, and the size of the transmission arm 133 is too large, the overall size of the rotating frame 132 is small due to the constraint of the internal space of the cover, resulting in a larger size of the fastening member 131, making linear movement of the fastening member 131 more difficult. Conversely, if the ratio of the rotation radius of the rotating frame 132 to the transmission arm 133 is too large, and the size of the transmission arm 133 is too small, the second axis AX2 of the transmission arm 133 will be too close to the rotating frame 132, resulting in low torque and force, and requiring more effort.

[0111] The rotating frame 132 has a rotation angle α1 when the fastener 131 moves between the locked position and the unlocked position (see...). Figure 5 The transmission arm 133 has a rotation angle α2 when the fastener 131 moves between the locked position and the unlocked position (see...). Figure 4 The ratio of the rotation angles α2 / α1 between the transmission arm 133 and the rotating frame 132 is 2 ≤ α2 / α1 ≤ 6. Suitable values ​​for the ratio α2 / α1 include, for example, 2, 2.5, 3, 3.5, 4, 4.5, 5, and 6. This allows for a smaller and more energy-efficient drive source. If the ratio of the rotation angles between the transmission arm 133 and the rotating frame 132 is too small, the size of the rotating frame 132 will be large, which is not conducive to the arrangement of the internal space of the cover. If the ratio of the rotation angles between the transmission arm 133 and the rotating frame 132 is too large, the overall size of the rotating frame 132 will be small, resulting in a larger size for the fastening member 131, making the linear movement of the fastening member 131 more laborious. The connecting hole is configured to allow the rotation angles between the transmission arm 133 and the rotating frame 132 to satisfy 2 ≤ α2 / α1 ≤ 6.

[0112] For ease of understanding, the rotation angle α1 of the rotating frame 132 can be decomposed into angles α11 and α12 between the front and rear extended reference lines and the reference lines passing through the third limit position P3 and the fourth limit position P4, respectively. The rotation angle α2 of the transmission arm 133 can be decomposed into angles α21 and α22 between the front and rear extended reference lines and the reference lines passing through the first limit position P1 and the second limit position P2, respectively. For example, α11 and α22 are both 9±1°, α1 is 18±1°; α21 is 43±2° and α22 is 31±2°, α2 is 74±2°. Therefore, α2 / α1 is 4.1.

[0113] The radial movement distance d1 of the fastener 131 between the locked and unlocked positions can be obtained using r1 and α1. When the fastener 131 moves between the locked and unlocked positions, the radial movement distance d2 of the transmission arm 133 can be obtained using r2 and α2. d2 = d21 + d22, where d21 is the radial movement distance of the transmission arm 133 between the extended reference line and the second extreme position P2 (locked), and d22 is the radial movement distance of the transmission arm 133 between the extended reference line and the first extreme position P1 (unlocked). For example, d1 is 30±1mm, d21 is 3.1±1mm, and d22 is 5.9±1mm, thus d1 / d2 is 0.3.

[0114] like Figure 16 and Figure 17As shown, there is a fitting clearance between the connecting rod 133c and the connecting hole 132e in at least one of the length direction and the width direction of the connecting hole 132e, and there is a fitting clearance between the transmission arm 133 and the rotating frame 132 in the height direction. The existence of the fitting clearance can prevent the connecting rod 133c from being stuck due to the deformation of the rotating frame 132 under force, and the movement of the connecting rod 133c can proceed smoothly to successfully drive the rotation of the rotating frame 132.

[0115] Optionally, there is a first fitting clearance L1 between the connecting rod 133c and the connecting hole 132e in the width direction of the connecting hole 132e, where 0 < L1 ≤ 2 mm. For example, L1 can be suitable values such as 0.4 mm, 0.6 mm, 0.8 mm, 1 mm, 1.2 mm, 1.4 mm, 1.6 mm, 1.8 mm, 2 mm, etc. This can prevent the connecting rod 133c from being stuck in the width direction of the connecting hole 132e, and the width of the connecting hole 132e will not be too large to avoid the connecting rod 133c disengaging from the connecting hole 132e. There is a second fitting clearance L2 between the connecting rod 133c and the connecting hole 132e in the length direction of the connecting hole 132e, where 2 ≤ L2 ≤ 5 mm. For example, L2 can be suitable values such as 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, etc. This can prevent the connecting rod 133c from being stuck in the length direction of the connecting hole 132e, and the connecting hole 132e can provide a moving space for the transmission arm 133 in the radial direction based on the first axis AX1, making the force transmission smoother and more reliable, and avoiding the deformation of the rotating frame 132 under force. There is a third fitting clearance L3 between the transmission arm 133 and the rotating frame 132 in the height direction, where 0 < L3 ≤ 2 mm. For example, L3 can be suitable values such as 0.4 mm, 0.6 mm, 0.8 mm, 1 mm, 1.2 mm, 1.4 mm, 1.6 mm, 1.8 mm, 2 mm, etc. This can prevent the driven end 133b of the transmission arm 133 from being stuck by the rotating frame 132 in the height direction.

[0116] Unless otherwise defined, the technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the technical field of the present utility model. The terms used herein are only for the purpose of describing specific implementation purposes and are not intended to limit the present utility model. The features described in one embodiment herein can be applied to another embodiment alone or in combination with other features, unless the feature is not applicable or otherwise stated in the other embodiment.

[0117] The present utility model has been described through the above embodiments. However, it should be understood that the above embodiments are only for the purpose of illustration and example, and the present utility model is not limited to the above embodiments. According to the teachings of the present utility model, more variations and modifications can be made, and these variations and modifications all fall within the scope of protection required by the present utility model.

Claims

1. A cooking utensil, comprising a lid and a pot body, the lid being closable and openable within the pot body to form a cooking space between the lid and the pot body, characterized in that, The cover body includes an inner cover assembly and a cover locking and opening assembly. The cover locking and opening assembly is located above the inner cover assembly and includes: A rotating frame which is rotatably arranged about a first axis extending in the vertical direction; Fastening members which are arranged at circumferential intervals based on the first axis. The fastening members are movably connected to the rotating frame and are movable between a locking position and an unlocking position along the radial direction based on the first axis as the rotating frame rotates; and A transmission arm. The active end of the transmission arm is used to be connected to a driving source, and the driven end of the transmission arm is connected to the rotating frame to push the rotating frame to rotate. The transmission arm is rotatably arranged about a second axis located at the active end and parallel to the first axis.

2. The cooking utensil according to claim 1, characterized in that, The transmission arm is located at the rear side of the rotating frame. The first axis is on the center line of the rotating frame extending in the front-back direction, and the second axis is on the center line or deviates from the center line.

3. The cooking utensil according to claim 1, characterized in that, The rotating frame has a first rotation radius r1, and the transmission arm has a second rotation radius r2, where r1>r2.

4. The cooking utensil according to claim 3, characterized in that, The ratio r1 / r2 of the first rotation radius r1 to the second rotation radius r2 is 2.5≤r1 / r2≤8.

5.

5. The cooking utensil according to claim 1, characterized in that, One of the rotating frame and the transmission arm is provided with a connection hole, and the other of the rotating frame and the transmission arm is provided with a connecting rod. The connecting rod is movably arranged in the connection hole.

6. The cooking appliance according to claim 5, wherein The connection hole is arranged on the rotating frame and is configured to be elongated. The elongated connection hole extends along the radial direction based on the first axis; and / or The rotating frame has a rotation angle α1 when the fastening member moves between the locking position and the unlocking position, and the transmission arm has a rotation angle α2 when the fastening member moves between the locking position and the unlocking position. The connection hole is configured to allow the rotation angles of both the transmission arm and the rotating frame to satisfy the following relationship: 2≤α2 / α1≤6.

7. The cooking utensil according to claim 5, characterized in that, There is a fitting gap between the connecting rod and the connection hole in at least one of the length direction and the width direction of the connection hole, and / or there is a fitting gap between the transmission arm and the rotating frame in the height direction.

8. The cooking appliance according to claim 7, wherein The connecting rod has a first fitting gap L1 with the connection hole in the width direction of the connection hole, where 0<L1≤2mm; and / or The connecting rod has a second fitting gap L2 with the connection hole in the length direction of the connection hole, where 2≤L2≤5mm; and / or The transmission arm has a third fitting gap L3 with the rotating frame in the height direction, where 0<L3≤2mm.

9. The cooking utensil according to claim 1, characterized in that, The cover locking and opening assembly further includes a driving motor as the driving source. The output shaft of the driving motor is connected to the active end of the transmission arm.

10. The cooking utensil according to claim 9, characterized in that, The active end of the transmission arm is provided with a hole, and the active end is sleeved on the output shaft through the hole. The output shaft has a locking recess on its outer circumferential surface and a locking protrusion on the inner wall of the hole, the locking protrusion engaging with the locking recess; or The output shaft is bonded to the active end with an adhesive.

11. The cooking utensil according to claim 9, characterized in that, The drive motor is a stepper motor.

12. The cooking utensil according to any one of claims 1 to 11, characterized in that, The transmission arm includes a mounting post, an outer periphery, and a plurality of connecting ribs. The mounting post is used to connect to a drive source. The plurality of connecting ribs are arranged at intervals in the circumferential direction based on the second axis. The outer periphery is connected to the mounting post through the plurality of connecting ribs.

13. The cooking utensil according to any one of claims 1 to 11, characterized in that, The rotating frame includes a guide connector and is provided with transmission holes corresponding to the fastening members. The guide connector is connected to the fastening members and is slidably connected in the corresponding transmission holes. The transmission holes are configured to guide the fastening members to move radially between a locked position and an unlocked position when the rotating frame rotates.

14. The cooking utensil according to any one of claims 1 to 11, characterized in that, The rotating frame includes a ring-shaped frame body and support beams. The support beams are staggered and connect to the frame bodies at different positions to form clearance gaps. The fasteners are connected to the frame body, and the support beams are rotatably fixed at positions through which the first axis passes.

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