Auxiliary cover opening assembly and electric pressure cooker

Abstract

This utility model belongs to the field of household appliance technology and discloses an auxiliary lid-opening assembly and an electric pressure cooker. In the auxiliary lid-opening assembly, one end of a rotating component is rotatably mounted on the inner liner, and the other end is limited between two push rods of a pusher component. The pusher component is connected to the lid and passes through the inner liner, and the support column of the pusher component is limited in the clearance groove of the rotating component. The support column is located between the two push rods, and the fitting is detachably connected to the support column and located in the clearance groove. There are gaps between the top of the fitting and the clearance groove, and between at least one side of the outer side of the rotating component and the push rod. When the rotating component rotates relative to the inner liner, the pusher component and the fitting are driven by the rotating component to drive the lid and the rotating component to rotate synchronously relative to the inner liner. This utility model, through the gaps between the top of the fitting and the clearance groove, and between the outer side of the rotating component and the two push rods, ensures that the rotating component will not experience movement jamming during up-and-down floating and left-and-right rotation.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to an auxiliary lid-opening component and an electric pressure cooker. Background Technology

[0002] Currently, most electric pressure cookers use a design where the push rod and mounting screw are integrated into one unit, allowing the lid to open and close via a rotating rod. However, since the rotating rod is typically integrated into the push rod, there is often motion interference between the two during pressure increases and decreases. This interference can cause jamming during pressure increases and decreases, leading to malfunctions in the pressure cooker. Therefore, effectively preventing jamming between the mounting screw and the rotating rod during pressure increases and decreases is a problem that needs to be solved by those skilled in the art. Utility Model Content

[0003] The purpose of this invention is to provide an auxiliary lid-opening component and an electric pressure cooker to avoid the jamming problem of assembly screws and rotating rods during pressure increase and decrease.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] The auxiliary lid-opening component includes:

[0006] The rotating component, the booster component, and the assembly are provided. One end of the rotating component is rotatably mounted on the inner liner, and the other end is limited between the two booster rods of the booster component. The booster component is connected to the cover and passes through the inner liner. The support column of the booster component is limited in the clearance groove of the rotating component. The support column is located between the two booster rods. The assembly is detachably connected to the support column and is located in the clearance groove. There are gaps between the top of the assembly and the clearance groove, and between at least one side of the outer side of the rotating component and the booster rod.

[0007] When the rotating component rotates relative to the inner liner, the booster and the mounting parts, driven by the rotating component, cause the cover to rotate synchronously with the rotating component relative to the inner liner.

[0008] Optionally, the height of the assembly within the support column is adjustable.

[0009] Alternatively, the rotating member includes a connecting portion and a driving portion, the clearance groove is disposed on the driving portion, the opening of the clearance groove is disposed facing the booster member, the connecting portion is connected to a switch assembly, the switch assembly is used to drive the rotating member to rotate relative to the liner.

[0010] Optionally, a first rotating post is provided between the connecting part and the driving part, a limiting post is provided on the liner, a through hole is provided through the first rotating post, the limiting post is inserted into the through hole, and the first rotating post and the limiting post can rotate relative to each other.

[0011] Optionally, a limiting ring is provided on the outer side of the limiting post, and an annular space is formed by the inner side of the limiting ring and the outer side of the limiting post. A limiting protrusion is provided on the side of the first rotating post facing the pusher. When the limiting post is inserted into the through hole, the limiting protrusion is inserted into the annular space.

[0012] Optionally, the liner is provided with a groove, through which the support column and the push rod pass and are slidably disposed.

[0013] Optionally, the support column is provided with a positioning hole, and the cover is provided with a positioning column, which passes through the positioning hole.

[0014] Optionally, the positioning post is provided with a threaded hole, and the assembly includes a screw and a washer, wherein the screw passes through the washer and is screwed into the threaded hole.

[0015] Optionally, the cover is provided with a positioning groove, and the push rod is provided with a positioning protrusion, which mates with the spherical surface of the positioning groove.

[0016] On the other hand, an electric pressure cooker includes an auxiliary lid opening assembly, an inner liner, a lid, and a switch assembly. One end of the auxiliary lid opening assembly is connected to the switch assembly, and the other end is connected to the lid. When the switch assembly drives the auxiliary lid opening assembly to rotate relative to the inner liner, the lid rotates relative to the inner liner under the influence of the auxiliary lid opening assembly.

[0017] The beneficial effects of this utility model are:

[0018] In this invention, a rotating component drives the pusher, the mounting parts, and the lid to rotate synchronously relative to the inner liner to achieve the purpose of opening the lid. The pusher and mounting parts are separated into two parts for easy assembly and disassembly. The rotating component has a clearance groove, and there is a gap between the top of the mounting parts and the clearance groove. The rotating component is limited between the two push rods, and there is also a gap between at least one side of the rotating component and the push rods. Therefore, during pressure increase and decrease, the rotating component will not interfere with the mounting parts or push rods during its up-and-down floating and left-and-right rotation, thus preventing movement jamming. Furthermore, the rotating component can push the push rods to rotate synchronously with them, thereby driving the lid to rotate, ensuring smooth movement, improving the functionality of the electric pressure cooker, and enhancing the user experience. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the auxiliary lid-opening component described in this embodiment of the invention installed in an electric pressure cooker;

[0020] Figure 2 This is a schematic diagram of the auxiliary cover opening component described in an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the inner liner in the electric pressure cooker described in this embodiment of the utility model;

[0022] Figure 4 This is a schematic diagram of the auxiliary lid opening component described in this utility model embodiment installed in an electric pressure cooker with the inner liner hidden;

[0023] Figure 5 This is a schematic diagram of the structure of the lid of the electric pressure cooker according to an embodiment of the present invention;

[0024] Figure 6 This is an isometric schematic diagram of the rotating component in the auxiliary cover opening assembly described in this embodiment of the utility model;

[0025] Figure 7 This is another isometric schematic diagram of the rotating component in the auxiliary cover opening assembly described in this embodiment of the utility model;

[0026] Figure 8 This is an isometric schematic diagram of the pusher component in the auxiliary cover opening assembly described in this utility model embodiment;

[0027] Figure 9 This is another isometric schematic diagram of the booster component in the auxiliary cover opening assembly described in this utility model embodiment.

[0028] In the picture:

[0029] 100 - Lining; 101 - Slide groove; 102 - Limiting post; 103 - Limiting ring;

[0030] 200 - Cover; 201 - Positioning groove; 202 - Positioning post;

[0031] 10-Rotating component; 11-Allowing groove; 12-First rotating column; 121-Column body; 122-Limiting protrusion; 123-Through hole; 13-Second rotating column;

[0032] 20-Booster; 21-Connecting plate; 22-Support column; 221-Positioning hole; 23-Booster rod; 231-Positioning protrusion;

[0033] 30 - Assembly parts. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] The technical solution of this embodiment will be further described below with reference to the accompanying drawings and specific implementation methods.

[0038] like Figures 1-9 As shown, this embodiment provides an auxiliary cover opening assembly, including a rotating member 10, a pushing member 20, and an assembly 30. One end of the rotating member 10 is rotatably mounted on the inner liner 100, and the other end is limited between the two pushing rods 23 of the pushing member 20. The pushing member 20 is connected to the cover 200 and passes through the inner liner 100. The support column 22 of the pushing member 20 is limited in the clearance groove 11 of the rotating member 10. The support column 22 is located between the two pushing rods 23. The assembly 30 is detachably connected to the support column 22 and is located in the clearance groove 11. There are gaps between the top of the assembly 30 and the clearance groove 11, and between at least one side of the outer side of the rotating member 10 and the pushing rod 23. When the rotating member 10 rotates relative to the inner liner 100, the pushing member 20 and the assembly 30 drive the cover 200 and the rotating member 10 to rotate synchronously relative to the inner liner 100 under the push of the rotating member 10.

[0039] On the other hand, the electric pressure cooker includes an auxiliary lid opening assembly, an inner liner 100, a lid 200, and a switch assembly. One end of the auxiliary lid opening assembly is connected to the switch assembly, and the other end is connected to the lid 200. When the switch assembly drives the auxiliary lid opening assembly to rotate relative to the inner liner 100, the lid 200 rotates relative to the inner liner 100 under the drive of the auxiliary lid opening assembly.

[0040] Specifically, in this embodiment, the rotating component 10 drives the pusher component 20, the mounting component 30, and the lid 200 to rotate synchronously relative to the inner liner 100 to achieve the purpose of opening the lid. In this embodiment, the pusher component 20 and the mounting component 30 are separated into two parts for easy disassembly and assembly. The rotating component 10 is provided with a clearance groove 11, and there is a gap between the top of the mounting component 30 and the clearance groove 11. The rotating component 10 is limited between the two push rods 23, and there is also a gap between at least one side of the outer side of the rotating component 10 and the push rod 23. Therefore, during the pressure increase and decrease, the rotating component 10 will not interfere with the mounting component 30 or the push rod 23 during the up-and-down floating and left-and-right rotation, so as not to cause the problem of movement jamming. In addition, the rotating component 10 can also push the push rod 23 to rotate synchronously with it, thereby driving the lid 200 to rotate, ensuring smooth movement, making the electric pressure cooker function better and improving the user experience.

[0041] The specific structure of the auxiliary cover opening component in this embodiment will be described below.

[0042] like Figures 1-2 As shown, in this embodiment, the auxiliary lid-opening assembly includes a rotating member 10, a pushing member 20, and an assembly 30. Optionally, the auxiliary lid-opening assembly is connected to the switch assembly and rotatably connected to the inner liner 100, and fixedly connected to the lid 200. Thus, driven by the switch assembly, the lid 200 can rotate relative to the inner liner 100 to assist in opening the lid. Specifically, in this embodiment, one end of the rotating member 10 is connected to the switch assembly, and the other end abuts against the pushing member 20. The rotating member 10 is rotatably mounted on the inner liner 100, thereby allowing the rotating member 10 to rotate relative to the inner liner 100 under the drive of the switch assembly. Optionally, in this embodiment, the inner liner 100 covers the outside of the lid 200, and the pusher 20 is connected to the lid 200. The pusher 20 passes through the inner liner 100 and is confined within the rotating member 10. Thus, through the limiting contact between the rotating member 10 and the pusher 20, the rotating member 10 can drive the pusher 20 to rotate synchronously with it, thereby causing the lid 200 to rotate relative to the inner liner 100, thus achieving the effect of assisting in opening the lid. Optionally, a gap is provided between the rotating member 10 and the pusher 20 to avoid movement jamming during left and right rotation. Furthermore, the accessory 30 is detachably connected to the pusher 20 to achieve a separate configuration, and a gap exists between the top of the accessory 30 and the rotating member 10. This provides clearance for the accessory 30, ensuring that when the pot floats up and down under pressure increases and decreases, there is no movement interference between the accessory 30 and the rotating member 10, thereby guaranteeing the overall safety of the electric pressure cooker.

[0043] Combination Figure 3 and Figures 6-7As shown, in this embodiment, the rotating member 10 includes a connecting part and a driving part, and the driving part is provided with a clearance groove 11. A first rotating column 12 is provided between the connecting part and the driving part. The first rotating column 12 includes a column body 121 and a limiting protrusion 122, and a through hole 123 is provided through the first rotating column 12 along its axial direction. A second rotating column 13 is provided at the end of the connecting part away from the driving part. Specifically, the second rotating column 13 is connected to the switch assembly, thereby driving the rotating member 10 to rotate through the switch assembly. Further, the clearance groove 11 is provided at the end of the driving part away from the connecting part, and the opening of the clearance groove 11 is provided facing the pusher 20. The clearance groove 11 is provided through the side wall away from the connecting part, thereby avoiding interference during the installation and movement of the assembly 30.

[0044] Combination Figure 2 and Figure 7 As shown, in this embodiment, the pusher 20 is confined within the clearance groove 11, and the fitting 30 is also located within the clearance groove 11. A gap exists between the top of the fitting 30 and the bottom of the clearance groove 11. Thus, when the rotating member 10 rotates relative to the inner liner 100 under the drive of the switch assembly, the pusher 20 and the fitting 30, pushed by the clearance groove 11, can drive the cover 200 and the rotating member 10 to rotate synchronously relative to the inner liner 100, thereby assisting in opening the cover. Furthermore, the gap between the clearance groove 11 and the fitting 30 effectively prevents interference between the rotating member 10 and the fitting 30 during pressure increase and decrease. Simultaneously, the through-wall design of the clearance groove 11 further avoids limiting the installation space of the fitting 30, ensuring that the fitting 30 and the pusher 20 smoothly move the cover 200. For example, the clearance groove 11 is configured as a square groove.

[0045] like Figure 7 As shown, further, the first rotating column 12 extends toward the booster 20 and is disposed perpendicular to the connecting portion. Optionally, one end of the column 121 is fixed to the bottom of the connecting portion, and the other end extends toward the booster 20 with a limiting protrusion 122, and a through hole 123 is provided through the limiting protrusion 122, the column 121, and the connecting portion along the axial direction of the column 121. Exemplarily, the inner diameter of the through hole 123 is smaller than the outer diameter of the limiting protrusion 122, and the outer diameter of the limiting protrusion 122 is smaller than the outer diameter of the column 121. Figure 3 As shown, in this embodiment, a limiting post 102 is provided on the inner liner 100, and a limiting ring 103 is provided on the outer side of the limiting post 102. An annular space is formed by the inner side of the limiting ring 103 and the outer side of the limiting post 102. For example, the height of the limiting post 102 is higher than the height of the limiting ring 103.

[0046] Specifically, in this embodiment, the limiting post 102 is inserted into the through hole 123, and the first rotating post 12 and the limiting post 102 can rotate relative to each other, thereby realizing the rotational setting of the rotating member 10 on the inner liner 100. Further, when the limiting post 102 is inserted into the through hole 123, the limiting protrusion 122 is inserted into the annular space to limit the position of the first rotating post 12. Correspondingly, the inner diameter of the limiting ring 103 is larger than the outer diameter of the limiting protrusion 122 and smaller than the outer diameter of the post 121. Therefore, the limiting protrusion 122 can be inserted between the limiting ring 103 and the limiting post 102, and the end face of the post 121 can abut against the upper end face of the limiting ring 103 to limit its position without affecting the relative rotation between the first rotating post 12 and the limiting post 102.

[0047] like Figure 3 As shown, the liner 100 is also provided with a groove 101, and part of the structure of the booster 20 can pass through the groove 101 to be confined in the clearance groove 11 of the rotating member 10. Specifically, the groove 101 is set as an arc-shaped groove, and the curvature of the arc-shaped groove is adapted to the rotation curvature of the clearance groove 11, so as to avoid the groove 101 interfering with the rotation of the first rotating column 12. For example, the center of the arc of the groove 101 coincides with the central axis of the limiting column 102, thereby ensuring that the clearance groove 11 can push the booster 20 to rotate synchronously with it. Further, the groove 101 is also provided with a disassembly hole, the center of the disassembly hole is located on the central arc of the groove 101, and the inner diameter of the disassembly hole is larger than the groove width of the groove 101, and is adapted to the outer diameter of the assembly 30, so as to facilitate disassembly and assembly.

[0048] like Figures 4-5 and Figures 8-9As shown, in this embodiment, the booster 20 includes a connecting plate 21, a support column 22, and a booster rod 23. The support column 22 has a positioning hole 221 extending through it along its axial direction, and the booster rod 23 has a positioning protrusion 231. Optionally, there are two booster rods 23, and the support column 22 is located between the two booster rods 23. Both the support column 22 and the booster rod 23 are vertically arranged on the connecting plate 21. Optionally, the connecting plate 21 is connected to the cover 200. The support column 22 and the booster rod 23 both pass through the slide groove 101 and are slidably arranged in the slide groove 101. The fitting 30 is installed in the support column 22, and the height of the fitting 30 in the support column 22 is adjustable, thereby changing the gap between the fitting 30 and the clearance groove 11. Furthermore, the support column 22 is located in the clearance groove 11, and the rotating member 10 is limited between the two push rods 23. Thus, when the rotating member 10 rotates relative to the inner liner 100, the outer wall of the clearance groove 11 abuts against the push rod 23, and the inner wall of the clearance groove 11 also abuts against the fitting 30 according to its rotation angle, thereby pushing the push rod 20 and the rotating member 10 to rotate synchronously, and consequently driving the cover 200 to rotate synchronously. Exemplarily, the limiting effect of the two push rods 23 can also provide lateral support for the rotating member 10, improving rotational stability. Specifically, at least one side of the outer side of the rotating member 10 has a gap with the push rod 23, so that no movement jamming occurs during the left and right rotation of the rotating member 10. Exemplarily, in this embodiment, there is a gap between the outer side of the rotating member 10 and both push rods 23.

[0049] like Figure 4 and Figure 5 As shown, in this embodiment, a positioning post 202 is provided on the cover 200, and positioning grooves 201 are respectively provided on both sides of the positioning post 202. The positions of the positioning post 202 and the positioning grooves 201 correspond one-to-one with the positions of the support post 22 and the push rod 23. Specifically, the positioning post 202 passes through the positioning hole 221 to improve the connection strength between the cover 200 and the push member 20. Further, a threaded hole is provided in the positioning post 202. In this embodiment, the assembly 30 includes a screw and a washer. The screw passes through the washer and is screwed into the threaded hole, thereby achieving a detachable connection between the assembly 30 and the push member 20. Exemplarily, the outer diameter of the washer is smaller than the distance between the groove walls on both sides of the opening of the clearance groove 11 to avoid interference with the rotation of the rotating member 10. Exemplarily, there is a gap between the screw and the bottom of the clearance groove 11, and the height of the assembly 30 can be changed by the screwing distance to achieve gap adjustment, thereby ensuring that there is no movement interference between the screw and the rotating member 10 during pressure increase and decrease.

[0050] Furthermore, the end of the push rod 23 facing the cover 200 has a positioning protrusion 231, which protrudes from the bottom end face of the connecting plate 21. Specifically, the positioning protrusion 231 is spherically engaged with the positioning groove 201, that is, the positioning protrusion 231 is set as a spherical structure and the positioning groove 201 is set as a spherical groove. Thus, the spherical engagement can increase the contact area between the push rod 23 and the cover 200, and can change the force in real time when the rotating member 10 pushes the push member 20 to slide along the slide groove 101, thereby improving the stability of the movement of the cover 200.

[0051] For example, in other embodiments, the connecting plate 21 can be directly fixed to the cover 200, and the positioning hole 221 can be set as a threaded hole, so that the screw in the assembly 30 can be directly screwed into the support column 22, realizing a detachable connection between the assembly 30 and the pusher 20. Further, the screw is slidably disposed in the slide groove 101, and the washer is located between the slide groove 101 and the clearance groove 11.

[0052] The specific structure of the electric pressure cooker in this embodiment will be described below.

[0053] like Figures 1-5 As shown, the electric pressure cooker includes the aforementioned auxiliary lid-opening assembly, inner liner 100, lid 200, and switch assembly. One end of the auxiliary lid-opening assembly is connected to the switch assembly, and the other end is connected to the lid 200. Driven by the switch assembly, the auxiliary lid-opening assembly can rotate relative to the inner liner 100, and during its rotation, it can drive the lid 200 to rotate relative to the inner liner 100, thereby achieving the performance of assisting in lid opening and improving lid-opening efficiency. Furthermore, the fitting 30 in the auxiliary lid-opening assembly is installed on the pusher 20, and the pusher 20 is confined in the clearance groove 11 of the rotating member 10. There is a gap between the fitting 30 and the clearance groove 11, which ensures that there is no interference between the fitting 30 and the rotating member 10 when pressurizing or depressurizing, thereby improving the safety of the electric pressure cooker. This improves the safety performance of the electric pressure cooker and enhances the user experience.

[0054] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An auxiliary lid-opening assembly, characterized in that, include: The rotating component (10), the booster component (20), and the assembly component (30) are provided. One end of the rotating component (10) is rotatably mounted on the inner liner (100), and the other end is limited between the two booster rods (23) of the booster component (20). The booster component (20) is connected to the cover (200) and passes through the inner liner (100). The support column (22) of the booster component (20) is limited in the clearance groove (11) of the rotating component (10). The support column (22) is located between the two booster rods (23). The assembly component (30) is detachably connected to the support column (22) and is located in the clearance groove (11). There are gaps between the top of the assembly component (30) and the clearance groove (11), and between at least one side of the outer side of the rotating component (10) and the booster rod (23). When the rotating component (10) rotates relative to the inner liner (100), the booster (20) and the mounting component (30) drive the cover (200) and the rotating component (10) to rotate synchronously relative to the inner liner (100) under the push of the rotating component (10).

2. The auxiliary lid-opening assembly according to claim 1, characterized in that, The height of the assembly (30) is adjustable within the support column (22).

3. The auxiliary lid-opening assembly according to claim 1, characterized in that, The rotating member (10) includes a connecting part and a driving part. The clearance groove (11) is disposed on the driving part. The opening of the clearance groove (11) is disposed facing the pusher (20). The connecting part is connected to the switch assembly. The switch assembly is used to drive the rotating member (10) to rotate relative to the liner (100).

4. The auxiliary cover opening assembly according to claim 3, characterized in that, A first rotating column (12) is provided between the connecting part and the driving part, and a limiting column (102) is provided on the inner liner (100). A through hole (123) is provided through the first rotating column (12), and the limiting column (102) is inserted into the through hole (123). The first rotating column (12) and the limiting column (102) can rotate relative to each other.

5. The auxiliary cover opening assembly according to claim 4, characterized in that, A limiting ring (103) is provided on the outer side of the limiting post (102). The inner side of the limiting ring (103) and the outer side of the limiting post (102) form an annular space. A limiting protrusion (122) is provided on the side of the first rotating post (12) facing the pusher (20). When the limiting post (102) is inserted into the through hole (123), the limiting protrusion (122) is inserted into the annular space.

6. The auxiliary cover opening assembly according to claim 1, characterized in that, The liner (100) is provided with a groove (101), and the support column (22) and the push rod (23) are both inserted through the groove (101) and slidably disposed in the groove (101).

7. The auxiliary cover opening assembly according to claim 1, characterized in that, The support column (22) is provided with a positioning hole (221), and the cover (200) is provided with a positioning column (202), which is provided through the positioning hole (221).

8. The auxiliary cover opening assembly according to claim 7, characterized in that, The positioning post (202) is provided with a threaded hole, and the assembly (30) includes a screw and a washer. The screw passes through the washer and is screwed into the threaded hole.

9. The auxiliary lid-opening assembly according to claim 5, characterized in that, The cover (200) is provided with a positioning groove (201), and the push rod (23) is provided with a positioning protrusion (231), which is spherically engaged with the positioning groove (201).

10. An electric pressure cooker, characterized in that, Includes an auxiliary opening assembly, an inner liner (100), a cover (200), and a switch assembly as described in any one of claims 1-9, wherein one end of the auxiliary opening assembly is connected to the switch assembly and the other end is connected to the cover (200), and when the switch assembly drives the auxiliary opening assembly to rotate relative to the inner liner (100), the cover (200) rotates relative to the inner liner (100) under the drive of the auxiliary opening assembly.

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