Cover body assembly and cooking utensil with same

Abstract

The utility model provides a cover body assembly and a cooking utensil with the cover body assembly, and the cover body assembly comprises a cover body which comprises an inner cover and an upper cover arranged above the inner cover; the exhaust pipe penetrates through the inner cover and is provided with an exhaust channel; the valve body is movably arranged on the upper cover, and the valve body has an exhaust state for avoiding the exhaust channel and an upper pressing state for blocking the exhaust channel; the rotary driving part is rotatably arranged on the upper cover, and the rotary driving part rotates to drive the valve body to rotate so that the valve body can be switched between an exhaust state and an upper pressing state; and the electric driving part is arranged on the upper cover and is in driving connection with the rotary driving piece so as to drive the rotary driving piece to rotate. According to the technical scheme of the invention, the problem of tedious operation of a user in related technologies can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of small household appliances, in particular to a cover assembly and a cooking utensil having the same. Background Art

[0002] In the related art, electric pressure cookers generally have a pressure limiting valve, which is pressed at the outlet of the exhaust passage of the exhaust pipe by its own weight. When the pressure in the cooking chamber exceeds a preset value, the pressure limiting valve will be lifted by the gas in the cooking chamber, so that the pressure limiting valve avoids the outlet of the exhaust passage of the exhaust pipe, thereby releasing part of the gas, and preventing the danger caused by excessive pressure in the cooking chamber. In addition, the user can also actively make the pressure limiting valve avoid the outlet of the exhaust passage of the exhaust pipe, so as to discharge the gas in the cooking chamber.

[0003] Specifically, the pressure limiting valve can have different working states, such as exhaust state, pressure state, etc. In specific use, the user can switch the working state of the pressure limiting valve by operating the operating part provided on the cover body. However, the process of the user manually operating the operating part is cumbersome, resulting in poor user experience. Utility Model Content

[0004] The main purpose of the utility model is to provide a cover assembly and a cooking utensil having the same, so as to solve the problem of complicated operation of users in the related art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a cover assembly is provided, including: a cover body, including an inner cover and an upper cover arranged above the inner cover; an exhaust pipe, which is passed through the inner cover, and the exhaust pipe has an exhaust channel; a valve body, which is movably arranged on the upper cover, and the valve body has an exhaust state for avoiding the exhaust channel and a pressure state for blocking the exhaust channel; a rotating drive member, which is rotatably arranged on the upper cover, and when the rotating drive member rotates, it can drive the valve body to rotate so that the valve body can switch between the exhaust state and the pressure state; an electric drive unit, which is arranged on the upper cover and is drivingly connected to the rotating drive member to drive the rotating drive member to rotate.

[0006] By applying the technical solution of the utility model, the cover body comprises an inner cover and an upper cover arranged above the inner cover, wherein the upper cover provides an installation base for various components, the inner cover can bear pressure during pressure cooking, the exhaust pipe is passed through the inner cover and is provided with an exhaust channel, the exhaust pipe is used to exhaust the gas in the cooking cavity, the valve body has an exhaust state and an upper pressure state, when the valve body is in the upper pressure state, the valve body blocks the exhaust channel, the pressure in the cooking cavity can be continuously increased to achieve pressure cooking of the food in the cooking cavity; when the valve body is in the exhaust state, the valve body avoids the exhaust channel, the cooking cavity is connected with the external atmosphere, the gas in the cooking cavity is discharged to the external atmosphere through the exhaust channel, thereby achieving pressureless cooking or reducing the pressure in the cooking cavity; the rotary drive member is rotatably arranged on the upper cover, the rotary drive member cooperates with the valve body, and the rotary drive member can rotate when it can The electric drive unit is arranged on the upper cover, and the electric drive unit works with electricity as the energy source. The electric drive unit is connected to the rotating drive member, and the electric drive unit works to drive the rotating drive member to rotate, and the rotation of the rotating drive member drives the valve body to rotate, thereby realizing the switching of the valve body between the exhaust state and the upper pressure state. Compared with the scheme in which the user manually operates the operating unit to switch the state of the valve body, the cover assembly of the present application can directly control the valve body to switch the working state through the control program, and the electric drive unit can accurately switch the working state of the valve body to the right position, and there will be no situation in which the user fails to manually operate the valve body and the working state of the valve body is not switched to the right position, which simplifies the user's operation and greatly improves the user's experience. Therefore, the technical solution of the present application can effectively solve the problem of cumbersome user operation in the related technology.

[0007] Furthermore, the cover assembly further comprises a transmission mechanism, the transmission mechanism comprises a first transmission member and a second transmission member that cooperate with each other, the first transmission member is connected to the electric drive unit, and the second transmission member is connected to the rotary drive member. The transmission mechanism makes the layout between the electric drive unit and the rotary drive member more flexible.

[0008] Furthermore, the electric drive unit has a rotating output shaft, the first transmission member is a gear arranged on the rotating output shaft, and the second transmission member is an arc-shaped rack. The gear and the arc-shaped rack have the advantages of reliable transmission, precise control, and easy processing.

[0009] Furthermore, the cover assembly also includes a first detection switch disposed on the upper cover, and the rotary drive member is provided with a first detection contact portion that cooperates with the first detection switch, and when the first detection contact portion contacts the first detection switch, the valve body is in an exhaust state or an upward pressure state. The first detection switch can move with the rotation of the rotary drive member, thereby achieving the cooperation between the first detection contact portion and the first detection switch.

[0010] Further, the cover assembly further includes a second detection switch disposed on the upper cover. A second detection contact portion cooperating with the second detection switch is disposed on the surface of the second transmission member away from the rotation driving member. When the second detection contact portion contacts the second detection switch, the valve body is in an exhaust state or an upper pressing state. The second detection contact portion and the rotation driving member have a proper interval in the vertical direction, so that the arrangement of the second detection switch is more flexible.

[0011] Further, the upper cover has a mounting hole corresponding to the exhaust pipe. The rotation driving member includes an annular base body disposed on the outer periphery of the valve body. The cover further includes a first limiting structure. The first limiting structure is connected to the upper surface of the upper cover and extends along the circumferential direction of the valve body. The annular base body is rotatably disposed inside the first limiting structure and is in abutting cooperation with the inner surface of the first limiting structure. The abutting cooperation between the first limiting structure and the annular base body enables the rotation driving member not to shift in the lateral direction when the rotation driving member rotates.

[0012] Further, the rotation driving member further includes a recess disposed on the bottom surface of the annular base body. The recess includes a top wall and an inner side wall. The top wall is in supporting cooperation with the first limiting structure, and the inner side wall is located inside the first limiting structure. The supporting cooperation between the top wall and the first limiting structure can reduce the friction between the rotation driving member and the first limiting structure.

[0013] Further, the cover further includes a second limiting structure. The second limiting structure is connected to the lower surface of the upper cover and is located outside the mounting hole. The rotation driving member further includes a connecting plate and a buckle. The connecting plate is connected to the annular base body, and the buckle is disposed at the bottom of the connecting plate. The buckle can be in snap-fit cooperation with the lower surface of the second limiting structure. The snap-fit cooperation between the buckle and the lower surface of the second limiting structure enables the rotation driving member not to separate from the upper cover in the vertical direction.

[0014] Further, a supporting protrusion is disposed on the upper cover, and a first mating surface and a second mating surface communicating with each other along the circumferential direction of the valve body are disposed on the valve body. The first mating surface is disposed farther from the inner cover than the second mating surface. When the first mating surface cooperates with the supporting protrusion, the valve body is in an upper pressing state. When the second mating surface cooperates with the supporting protrusion, the valve body is in an exhaust state. The supporting protrusion cooperates with the first mating surface and the second mating surface respectively, so that the valve body can be switched between the upper pressing state and the exhaust state.

[0015] According to another aspect of the present invention, a cooking appliance is provided, including a cover assembly, and the cover assembly is the above-mentioned cover assembly. The above-mentioned cover assembly can effectively solve the problem of cumbersome operation of users in the related art, and the cooking appliance having the above-mentioned cover assembly also has the above-mentioned advantages. Description of the Drawings

[0016] The accompanying drawings of the specification, which form a part of this application, are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0017] Figure 1 Shows a three-dimensional structural schematic diagram of a first embodiment of a cover assembly according to the present utility model;

[0018] Figure 2 Shows Figure 1 An enlarged view of part A of the cover assembly of;

[0019] Figure 3 Shows Figure 1 A bottom view schematic diagram of the cover assembly of, wherein the second detection contact part cooperates with the second detection switch;

[0020] Figure 4 Shows Figure 3 A bottom view schematic diagram of the cover assembly of, wherein the second detection contact part is disengaged from the second detection switch;

[0021] Figure 5 Shows Figure 1 An exploded structural schematic diagram of the rotation driving part, transmission mechanism, electric driving part, second detection switch and second detection contact part of the cover assembly of;

[0022] Figure 6 Shows Figure 1 A cross-sectional schematic diagram of a part of the cover assembly of;

[0023] Figure 7 Shows Figure 6 An enlarged view of part B of the cover assembly of;

[0024] Figure 8 Shows Figure 1 A three-dimensional structural schematic diagram of another angle of the cover assembly of;

[0025] Figure 9 Shows Figure 8 An enlarged view of part C of the cover assembly of;

[0026] Figure 10 Shows Figure 1 A three-dimensional structural schematic diagram of the valve body of the cover assembly of;

[0027] Figure 11 Shows Figure 1 A cross-sectional schematic diagram of the valve body and the exhaust pipe of the cover assembly of, wherein the valve body is in a first pressure state;

[0028] Figure 12 Shows Figure 11Schematic cross-sectional view of the valve body and the exhaust pipe, wherein the valve body is in the second pressure state;

[0029] Figure 13 shows Figure 11 Schematic cross-sectional view of the valve body and the exhaust pipe, wherein the valve body is in the exhaust state;

[0030] Figure 14 Shows a bottom view schematic diagram of the second embodiment of the cover assembly according to the present invention.

[0031] Among them, the above-mentioned drawings include the following reference numerals:

[0032] 10. Cover body; 11. Upper cover; 111. Mounting hole; 112. Support projection; 12. First limiting structure; 13. Second limiting structure;

[0033] 20. Exhaust pipe; 21. Exhaust passage;

[0034] 30. Outer valve core; 351. Lug;

[0035] 40. Rotary drive member; 41. Ring-shaped base; 411. Slide groove; 42. Recess; 421. Top wall; 422. Inner side wall; 43. Connecting plate; 44. Snap;

[0036] 50. Electric drive part;

[0037] 60. Transmission mechanism; 61. First transmission member; 62. Second transmission member;

[0038] 70. Second detection switch;

[0039] 80. Second detection contact part;

[0040] 91. Third detection switch; 92. Third detection contact part. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0042] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0043] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0044] As Figures 1 to 5 shown, the present application provides a cover assembly. Embodiments of the cover assembly of the present application include: a cover body 10, an exhaust pipe 20, a valve body 30, a rotary drive member 40, and an electric drive portion 50; the cover body 10 includes an inner cover and an upper cover 11 disposed above the inner cover; the exhaust pipe 20 penetrates through the inner cover, and the exhaust pipe 20 has an exhaust passage 21; the valve body 30 is movably disposed on the upper cover 11, and the valve body 30 has an exhaust state in which the exhaust passage 21 is avoided and an upper pressing state in which the exhaust passage 21 is blocked; the rotary drive member 40 is rotatably disposed on the upper cover 11, and when the rotary drive member 40 rotates, it can drive the valve body 30 to rotate so that the valve body 30 switches between the exhaust state and the upper pressing state; the electric drive portion 50 is disposed on the upper cover 11 and is drivingly connected to the rotary drive member 40 to drive the rotary drive member 40 to rotate.

[0045] Applying the technical solution of this embodiment, the cover body 10 includes an inner cover and an upper cover 11 disposed above the inner cover. Among them, the upper cover 11 provides an installation basis for each component, and the inner cover can bear pressure during the pressure cooking process. The exhaust pipe 20 penetrates through the inner cover and is provided with an exhaust passage 21. The exhaust pipe 20 is used to discharge the gas in the cooking cavity. The valve body 30 has an exhaust state and an upper pressure state. When the valve body 30 is in the upper pressure state, the valve body 30 blocks the exhaust passage 21, and the pressure in the cooking cavity can continuously increase to achieve pressure cooking of the food in the cooking cavity; when the valve body 30 is in the exhaust state, the valve body 30 avoids the exhaust passage 21, the cooking cavity is communicated with the external atmosphere, and the gas in the cooking cavity is discharged to the external atmosphere through the exhaust passage 21, so as to achieve non-pressure cooking or reduce the pressure in the cooking cavity; the rotary driving member 40 is rotatably disposed on the upper cover 11, the rotary driving member 40 and the valve body 30 cooperate, and when the rotary driving member 40 rotates, it can drive the valve body 30 to rotate, so that the valve body 30 is switched between the exhaust state and the upper pressure state. The electric driving part 50 is disposed on the upper cover 11, and the electric driving part 50 operates with electric energy as the energy source. The electric driving part 50 is drivingly connected to the rotary driving member 40. The electric driving part 50 operates to drive the rotary driving member 40 to rotate, and the rotation of the rotary driving member 40 drives the valve body 30 to rotate, so as to realize the switching of the valve body 30 between the exhaust state and the upper pressure state. Compared with the solution of the user manually operating the operating part to switch the state of the valve body, the cover body assembly of this embodiment can directly control the valve body 30 to switch the working state through a control program, and the electric driving part 50 can accurately switch the working state of the valve body 30 in place, and there will be no situation where the user's manual operation is not in place and the working state of the valve body 30 is not switched in place, which simplifies the user's operation and greatly improves the user's experience. Therefore, the technical solution of this embodiment can effectively solve the problem of cumbersome user operation in the related art.

[0046] It should be noted that the electric driving part 50 is a structure that converts electric energy into kinetic energy. In this embodiment, the electric driving part 50 uses electric energy as the energy source to drive the rotary driving member 40 to rotate, and further realizes driving the valve body 30 to switch the working state. The electric driving part 50 is a rotary motor structure. In other feasible embodiments, the electric driving part can be a structure such as an electric push rod, a cylinder, an electromagnet, etc., as long as it can drive the rotary driving member to rotate.

[0047] Such as Figures 1 to 5As shown, the cover assembly further includes a transmission mechanism 60. The transmission mechanism 60 includes a first transmission member 61 and a second transmission member 62 that cooperate with each other. The first transmission member 61 is connected to the electric drive unit 50, and the second transmission member 62 is connected to the rotary drive member 40. Specifically, the arrangement of the transmission mechanism 60 makes the arrangement of the electric drive unit 50 and the rotary drive member 40 more flexible and reasonable. Specifically, in this embodiment, by providing the first transmission member 61 and the second transmission member 62 between the electric drive unit 50 and the rotary drive member 40, the electric drive unit 50 and the rotary drive member 40 can be arranged in the transverse direction, so that the electric drive unit 50 can avoid the valve body 30.

[0048] As Figures 1 to 5 shown, the electric drive unit 50 has a rotary output shaft. The first transmission member 61 is a gear provided on the rotary output shaft, and the second transmission member 62 is an arc-shaped rack. Specifically, the gear and the arc-shaped rack have the advantages of stable transmission and easy processing. The uniform pitch on the gear and the arc-shaped rack can provide precise position control and are suitable for occasions that require precise positioning. The gear and the arc-shaped rack can be designed to be more compact compared with other transmission methods (such as belts, chains, etc.), making the structural layout in the cover assembly more reasonable.

[0049] As Figures 3 to 5 shown, in this embodiment, the cover assembly further includes a second detection switch 70 provided on the upper cover 11. A second detection contact portion 80 that cooperates with the second detection switch 70 is provided on the surface of the second transmission member 62 away from the rotary drive member 40. When the second detection contact portion 80 contacts the second detection switch 70, the valve body 30 is in the exhaust state or the upper pressure state. Specifically, the second detection contact portion 80 is provided on the surface of the second transmission member 62 away from the rotary drive member 40. The second detection contact portion 80, the second transmission member 62, and the annular base body 41 (mentioned later) can be integrally injection-molded, which has the advantage of easy processing. The second detection contact portion 80, the second transmission member 62, and the annular base body 41 are arranged in sequence in the up-down direction, so that there is an appropriate spacing distance between the second detection contact portion 80 and the upper cover 11, which is beneficial to the arrangement of the second detection switch 70. The second detection contact portion 80 can cooperate with the second detection switch 70. The second detection contact portion 80 rotates with the second transmission member 62 and moves towards or away from the second detection switch 70. Specifically, in this embodiment, when the valve body 30 switches to the exhaust state, the second detection contact portion 80 rotates with the second transmission member 62 (that is, the rotation direction of the first transmission member 61 is Figure 3in the clockwise direction) and move towards the second detection switch 70. When the valve body 30 is switched to the exhaust state in place, the second detection contact portion 80 cooperates with the second detection switch 70, so that the second detection switch 70 sends a control signal to the electric drive portion 50. After receiving the control signal, the electric drive portion 50 stops working, so that the valve body 30 remains in the exhaust state. When it is necessary to switch the valve body 30 to the upper pressure state, the second transmission member 62 is rotated in the reverse direction (that is, the rotation direction of the first transmission member 61 is Figure 3 in the counterclockwise direction) in the figure, so that the second detection contact portion 80 moves away from the second detection switch 70. When the second transmission member 62 is rotated in the reverse direction to the first preset angle, the valve body 30 is switched to the upper pressure state.

[0050] In addition, in other embodiments not shown in the figure, the cover assembly further includes a first detection switch provided on the upper cover, and a first detection contact portion cooperating with the first detection switch is provided on the rotary drive member. When the first detection contact portion contacts the first detection switch, the valve body is in the exhaust state or the upper pressure state. The difference from the first embodiment is that the setting position of the first detection contact portion is different. In this embodiment, the first detection contact portion is directly connected to the rotary drive member, specifically, it is connected to the annular base body. The first detection contact portion rotates with the annular base body so that the first detection contact portion can cooperate with the first detection switch, and the above effects can also be achieved.

[0051] As Figure 6 and Figure 7 shown, the upper cover 11 has a mounting hole 111 corresponding to the exhaust pipe 20. The rotary drive member 40 includes an annular base body 41 provided on the outer periphery of the valve body 30. The cover 10 further includes a first limiting structure 12. The first limiting structure 12 is connected to the upper surface of the upper cover 11 and extends along the circumferential direction of the valve body 30. The annular base body 41 is rotatably provided inside the first limiting structure 12 and is in abutting cooperation with the inner surface of the first limiting structure 12. Specifically, the first limiting structure 12 is a ring plate structure. The abutting cooperation between the first limiting structure 12 and the annular base body 41 prevents the annular base body 41 from shifting in the lateral direction when rotating.

[0052] As Figure 6 and Figure 7 shown, the rotary drive member 40 further includes a recess 42 provided on the bottom surface of the annular base body 41. The recess 42 includes a top wall 421 and an inner side wall 422. The top wall 421 is in supporting cooperation with the first limiting structure 12, and the inner side wall 422 is located inside the first limiting structure 12. Specifically, the top wall 421 is in supporting cooperation with the first limiting structure 12, so that the friction between the annular base body 41 and the first limiting structure 12 is relatively small when the annular base body 41 rotates, which is beneficial to the rotation of the annular base body 41.

[0053] AsFigure 1 and Figures 5 to 7 As shown in Figures 5 to 7 , the cover body 10 further includes a second limiting structure 13. The second limiting structure 13 is connected to the lower surface of the upper cover 11 and is located on the outer periphery of the mounting hole 111. The rotary driving member 40 further includes a connecting plate 43 and a buckle 44. The connecting plate 43 is connected to the annular base body 41. The buckle 44 is disposed at the bottom of the connecting plate 43. The buckle 44 can be engaged with the lower surface of the second limiting structure 13. Specifically, the buckle 44 is engaged with the lower surface of the second limiting structure 13, so that when the rotary driving member 40 is installed at the mounting hole 111, the rotary driving member 40 will not be separated from the upper cover 11 in the vertical direction, thereby realizing the stable connection between the rotary driving member 40 and the upper cover 11.

[0054] As Figure 10 shown in Figure 10 , a support protrusion 112 is provided on the upper cover 11, and a first mating surface 31 and a second mating surface 32 that communicate with each other along the circumferential direction of the valve body 30 are provided on the valve body 30. The first mating surface 31 is disposed farther from the inner cover than the second mating surface 32. When the first mating surface 31 cooperates with the support protrusion 112, the valve body 30 is in the upper pressing state. When the second mating surface 32 cooperates with the support protrusion 112, the valve body 30 is in the exhaust state.

[0055] More specifically, in this embodiment, the valve body 30 includes an inner valve core 34 and an outer valve core 35 disposed on the outer periphery of the inner valve core 34. As Figure 10 shown in Figure 10 , the valve body 30 further includes a third mating surface 33 located between the first mating surface 31 and the second mating surface 32. The third mating surface 33 is disposed farther from the inner cover than the second mating surface 32 and closer to the inner cover than the first mating surface 31 (that is, the mating surfaces with decreasing distances from the bottom surface of the valve body 30 are the first mating surface 31, the third mating surface 33, and the second mating surface 32 in sequence). Specifically, the first mating surface 31, the second mating surface 32, and the third mating surface 33 are all provided on the outer valve core 35. The upper pressing state includes a first pressure state and a second pressure state. When the support protrusion 112 cooperates with the first mating surface 31, the valve body 30 is in the first pressure state, and the outer valve core 35 presses down the inner valve core 34 so that the inner valve core 34 and the outer valve core 35 jointly block the exhaust passage 21. When the support protrusion 112 cooperates with the third mating surface 33, the valve body 30 is in the second pressure state, and the outer valve core 35 is separated from the inner valve core 34 so that only the inner valve core 34 blocks the exhaust passage 21. When the support protrusion 112 cooperates with the second mating surface 32, the valve body 30 is in the exhaust state, and the outer valve core 35 lifts the inner valve core 34 to make the inner valve core 34 avoid the exhaust passage 21.

[0056] In this embodiment, a first bump 341 and a second bump 342 are arranged on the inner valve core 34 at intervals in the up and down directions. The first bump 341 is above the second bump 342. A partial structure of the outer valve core 35 is arranged between the first bump 341 and the second bump 342 so that the outer valve core 35 can cooperate with both the first bump 341 and the second bump 342; as Figure 11 shown, the support protrusion 112 cooperates with the first mating surface 31. At this time, the outer valve core 35 presses down the second bump 342, so that the outer valve core 35 presses down the inner valve core 34, and further makes the inner valve core 34 and the outer valve core 35 jointly block the exhaust passage 21, so that the valve body 30 is in the first pressure state (that is, the cooking cavity is in the heavy pressure state); as Figure 12 shown, the support protrusion 112 cooperates with the third mating surface 33. At this time, a partial structure of the outer valve core 35 is located between the first bump 341 and the second bump 342. The outer valve core 35 neither cooperates with the first bump 341 nor cooperates with the second bump 342, so that only the inner valve core 34 blocks the exhaust passage 21, so that the valve body 30 is in the second pressure state (that is, the cooking cavity is in the light pressure state); as Figure 13 shown, the support protrusion 112 cooperates with the second mating surface 32. At this time, the outer valve core 35 cooperates with the first bump 341, so that the outer valve core 35 lifts the inner valve core 34, and further makes the inner valve core 34 avoid the exhaust port of the exhaust passage 21, so that the valve body 30 is in the exhaust state (that is, the cooking cavity is in the non-pressure state).

[0057] As Figure 8 and Figure 9 shown, a chute 411 is arranged on the inner side of the annular base body 41. The chute 411 extends in the up and down directions. A lug 351 is arranged on the outer side of the valve body 30. The lug 351 is slidably arranged in the chute 411 so that when the rotary driving member 40 drives the valve body 30 to rotate, the valve body 30 can move up and down. Specifically, the cooperation between the chute 411 and the lug 351 makes the valve body 30 and the rotary driving member 40 in a non-rotating fit, and further makes the rotary driving member 40 rotate, driving the valve body 30 to rotate and the outer valve core 35 can move in the up and down directions, so as to realize the switching of the working state of the valve body 30.

[0058] In addition, as Figure 14As shown, the present application also provides a second embodiment of the cover assembly. Different from the first embodiment, the cover assembly further includes a third detection switch 91 and a third detection contact portion 92. The second detection contact portion 80 and the third detection contact portion 92 are respectively located at both ends of the second transmission member 62. The third detection switch 91 and the second detection switch 70 are arranged at intervals along the extending direction of the second transmission member 62 and are respectively located on both sides of the second transmission member 62. When the valve body 30 switches to the exhaust state, the second detection contact portion 80 cooperates with the second detection switch 70 to send a suitable control signal to the electric drive portion 50. When the second transmission member 62 rotates Figure 14 in the clockwise direction in Figure 14 by a second preset angle, the valve body 30 switches to the second pressure state. Then the second transmission member 62 continues to rotate in the clockwise direction in

[0059]

[0060]

[0061]

[0062] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as a limitation on the protection scope of the present utility model; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0062] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. can be used here to describe the spatial positional relationship of a device or feature shown in the figure with other devices or features. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is inverted, the device described as "above" or "over" other devices or structures will then be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the spatial relative descriptions used here will be made accordingly.

[0063] In addition, it should be noted that the use of terms such as "first", "second" etc. to limit components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present utility model.

[0064] The above are only the preferred embodiments of the present utility model, and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A cover assembly, characterized in that, Comprising: A cover body (10), including an inner cover and an upper cover (11) disposed above the inner cover; An exhaust pipe (20), passing through the inner cover, the exhaust pipe (20) having an exhaust passage (21); A valve body (30), movably disposed on the upper cover (11), the valve body (30) having an exhaust state for avoiding the exhaust passage (21) and an upper pressing state for blocking the exhaust passage (21); A rotary driving member (40), rotatably disposed on the upper cover (11), when the rotary driving member (40) rotates, it can drive the valve body (30) to rotate so that the valve body (30) switches between the exhaust state and the upper pressing state; An electric driving part (50), disposed on the upper cover (11) and drivingly connected to the rotary driving member (40) to drive the rotary driving member (40) to rotate.

2. The cover assembly according to claim 1, wherein The cover body assembly further includes a transmission mechanism (60), the transmission mechanism (60) includes a first transmission member (61) and a second transmission member (62) that cooperate with each other, the first transmission member (61) is connected to the electric driving part (50), and the second transmission member (62) is connected to the rotary driving member (40).

3. The cover assembly according to claim 2, characterized in that, The electric driving part (50) has a rotary output shaft, the first transmission member (61) is a gear disposed on the rotary output shaft, and the second transmission member (62) is an arc-shaped rack.

4. The cover assembly according to any one of claims 1 to 3, characterized in that, The cover body assembly further includes a first detection switch disposed on the upper cover (11), a first detection contact part cooperating with the first detection switch is disposed on the rotary driving member (40), when the first detection contact part contacts the first detection switch, the valve body (30) is in the exhaust state or the upper pressing state.

5. The cover assembly according to claim 2, characterized in that, The cover body assembly further includes a second detection switch (70) disposed on the upper cover (11), a second detection contact part (80) cooperating with the second detection switch (70) is disposed on the surface of the second transmission member (62) away from the rotary driving member (40), when the second detection contact part (80) contacts the second detection switch (70), the valve body (30) is in the exhaust state or the upper pressing state.

6. The cover assembly according to any one of claims 1 to 3, characterized in that The upper cover (11) has a mounting hole (111) corresponding to the exhaust pipe (20), the rotary driving member (40) includes an annular base body (41) disposed on the outer periphery of the valve body (30), the cover body (10) further includes a first limiting structure (12), the first limiting structure (12) is connected to the upper surface of the upper cover (11) and extends along the circumferential direction of the valve body (30), and the annular base body (41) is rotatably disposed inside the first limiting structure (12) and is in a stop fit with the inner surface of the first limiting structure (12).

7. The cover assembly according to claim 6, wherein The rotation driving member (40) further includes a recess (42) provided on the bottom surface of the annular base body (41). The recess (42) includes a top wall (421) and an inner side wall (422). The top wall (421) is in supporting cooperation with the first limiting structure (12), and the inner side wall (422) is located inside the first limiting structure (12).

8. The cover assembly according to claim 6, wherein, The cover body (10) further includes a second limiting structure (13). The second limiting structure (13) is connected to the lower surface of the upper cover (11) and is located on the outer periphery of the mounting hole (111). The rotation driving member (40) further includes a connecting plate (43) and a buckle (44). The connecting plate (43) is connected to the annular base body (41), and the buckle (44) is provided at the bottom of the connecting plate (43). The buckle (44) can be in snap-fit with the lower surface of the second limiting structure (13).

9. The cover assembly according to any one of claims 1 to 3, characterized in that A support protrusion (112) is provided on the upper cover (11). A first mating surface (31) and a second mating surface (32) that communicate with each other in the circumferential direction of the valve body (30) are provided on the valve body (30). The first mating surface (31) is farther from the inner cover than the second mating surface (32). When the first mating surface (31) cooperates with the support protrusion (112), the valve body (30) is in the upper pressing state. When the second mating surface (32) cooperates with the support protrusion (112), the valve body (30) is in the exhaust state.

10. A cooking appliance, comprising a lid assembly, characterized in that, The cover body assembly is the cover body assembly according to any one of claims 1 to 9.

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