Knob assembly and cooking equipment

Abstract

The utility model provides a knob assembly and cooking equipment, the knob assembly comprises a base, a shell, a regulator and an indicating structure, the fixed part of the regulator is fixedly connected with the base, the rotating part of the regulator is fixedly connected with the shell, the shell is sleeved on the base and can rotate around the rotating shaft of the regulator relative to the shell, and the indicating structure is arranged on the shell. The indicating structure is fixedly connected with the base and located on one side of the rotating shaft, and a scale structure distributed around the rotating shaft is arranged on the outer wall of the shell. According to the utility model, the outer wall of the shell is provided with the scale structures distributed around the rotating shaft, and the indicating structure is arranged on one side of the rotating shaft in an offset manner, so that a user can determine a rotating angle according to the scale structure currently corresponding to the indicating structure; therefore, the problems of falling and fuzziness caused by printing the indication mark on the equipment shell are avoided, and the accuracy of the rotation angle of the knob controlled by a user is ensured.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, specifically to a knob assembly and a cooking device including the knob assembly. Background Technology

[0002] In household appliances, knobs are a common feature used to adjust the operating status of the product. For example, cooking equipment such as electric ovens, rice cookers, and air fryers often have knobs installed to adjust the heating time or temperature. To facilitate user confirmation of adjustments, the outer casing of the cooking equipment usually has temperature or time indicators around the knob's mounting location. The knob itself has an indicator point; turning the knob moves the indicator point to different temperatures or times indicated on the temperature or time indicator, allowing users to precisely control the temperature and heating time.

[0003] However, in the existing technology, temperature or time indicators are usually printed on the surface of the casing. After prolonged use, the printed indicators often fall off or become blurred, making it difficult for users to accurately judge the knob's turning angle. Consequently, it becomes difficult to accurately control the cooking temperature or time of the cooking equipment, affecting the user experience.

[0004] Therefore, ensuring the accuracy of the user's control knob rotation angle has become a pressing technical problem to be solved in this field. Utility Model Content

[0005] This utility model aims to solve one of the technical problems in related technologies to a certain extent. To this end, this utility model provides a knob assembly and a cooking device including the knob assembly. The knob assembly integrates both indicator points and indicator marks, which can avoid the problems of peeling and blurring caused by printing the indicator marks on the device shell, and ensure the accuracy of the user's control of the knob rotation angle.

[0006] To achieve the above objectives, as one aspect of this utility model, a knob assembly is provided, including a base, a housing, an adjuster, and an indicating structure. The fixed part of the adjuster is fixedly connected to the base, and the rotating part of the adjuster is fixedly connected to the housing. The housing is sleeved on the base and can rotate relative to the housing about the rotation axis of the adjuster to drive the rotating part of the adjuster to rotate. The indicating structure is fixedly connected to the base and located on one side of the rotation axis. The outer wall of the housing has a scale structure distributed around the rotation axis.

[0007] Optionally, the housing includes an indicator cylinder, a connecting plate, and a driving unit. The indicator cylinder is sleeved on the base around the rotation axis. The scale structure is formed on the outer surface of the indicator cylinder. The connecting plate is located on one side of the base along the rotation axis and is fixedly connected to the inner wall of the indicator cylinder. The driving unit is fixedly disposed on the side of the connecting plate facing the base and is fixedly connected to the rotating part of the regulator. A first arc-shaped hole is formed on the connecting plate, extending along the thickness direction of the connecting plate. The first arc-shaped hole extends around the rotation axis. One end of the indicator structure along the rotation axis is fixedly connected to the base, and the other end of the indicator structure passes through the first arc-shaped hole.

[0008] Optionally, the base includes a base and a mating seat, the mating seat is fixedly connected to the base and is located between the base and the connecting plate, the indicating structure is fixedly connected to the mating seat, and a clearance hole is formed in the mating seat that extends along the rotation axis, the rotating part of the adjuster passes through the clearance hole and is fixedly connected to the driving part;

[0009] The connecting plate has multiple positioning buckles on the side facing the base, and the multiple positioning buckles pass through the clearance hole and contact the surface of the mating seat on the side facing the base.

[0010] Optionally, the base and the mating seat are assembled and connected by fasteners.

[0011] Optionally, a mating part is fixedly provided on the side of the mating seat away from the base, and a mating hole is formed in the mating part that extends along the direction of the rotation axis. The end of the indicating structure facing the base is fixedly provided in the mating hole.

[0012] Optionally, the cross-sectional shape of the mating hole is elongated.

[0013] Optionally, the driving part has a mating groove on the side facing the base, and the rotating part of the regulator has a non-circular cross-sectional shape along the axis of rotation. The shape of the mating groove corresponds to the shape of the rotating part of the regulator, and the rotating part of the regulator is accommodated in the mating groove.

[0014] Optionally, the connecting plate has a plurality of mating teeth on the side facing the base, the plurality of mating teeth being distributed around the rotation axis, and the base has a protrusion on the side facing the connecting plate, the plurality of mating teeth being able to contact the protrusion sequentially as the housing rotates.

[0015] Optionally, the plurality of mating teeth includes a plurality of first mating teeth and a plurality of second mating teeth, wherein the distance between the first mating teeth and the base is less than the distance between the second mating teeth and the base, the plurality of second mating teeth are distributed around the rotation axis, and the plurality of first mating teeth are distributed between the second mating teeth around the rotation axis.

[0016] Optionally, the plurality of mating teeth include a plurality of sets of second mating teeth, each set including a plurality of second mating teeth, and the plurality of first mating teeth are distributed around the rotation axis between adjacent sets of second mating teeth.

[0017] Optionally, each set of second mating teeth includes two second mating teeth.

[0018] Optionally, the protrusion facing the mating tooth has a tapered shape.

[0019] Optionally, the knob assembly further includes a cover plate stacked on the side of the housing away from the base, the cover plate having a fixing hole extending along the thickness direction of the cover plate, and the end of the indicating structure away from the base passing through the fixing hole.

[0020] Optionally, a receiving groove is formed between the side of the connecting plate away from the base and the end of the indicator cylinder, and the cover plate is received in the receiving groove.

[0021] Optionally, the cover plate has a first annular support portion on the side facing the base, the first annular support portion extending around the rotation axis.

[0022] Optionally, the connecting plate has a second annular support portion on the side opposite to the base, the second annular support portion extending around the rotation axis.

[0023] Optionally, the second annular support portion is located inside the first arc-shaped hole.

[0024] Optionally, a connecting buckle is fixedly provided on the side of the cover plate facing the base, and a second arc-shaped hole is formed on the side wall of the housing facing away from the base. The second arc-shaped hole extends around the rotation axis, and the connecting buckle passes through the second arc-shaped hole and is connected to the base.

[0025] Optionally, the connecting buckle passes through the clearance hole and contacts the surface of the mating seat facing the base.

[0026] Optionally, the connecting buckle and the fixing hole are located on opposite sides of the rotating shaft.

[0027] Optionally, the knob assembly further includes a circuit board, the fixing part of the regulator is fixedly disposed on the circuit board, and the circuit board is fixedly connected to the base.

[0028] Optionally, the base has multiple mounting posts on its bottom wall, each mounting post having a mounting hole. The circuit board has multiple mounting through holes, the positions of which correspond one-to-one with the positions of the mounting posts. Multiple fasteners pass through the mounting through holes and into the mounting holes in sequence to fix the circuit board to the base.

[0029] Optionally, an annular boss is formed on the outer side wall of the base, the annular boss extends around the rotation axis, and the annular boss contacts the inner side wall of the housing.

[0030] As a second aspect of this utility model, a cooking device is provided, including a heating shell and a heating component. The heating shell has a heating cavity, and the heating component is used to heat an object in the heating cavity. The cooking device also includes a knob assembly provided in the embodiments of this utility model. The base of the knob assembly is fixedly connected to the heating shell, and the adjuster of the knob assembly is electrically connected to the heating component.

[0031] In the knob assembly and cooking device provided by this utility model, the knob assembly includes a base, a housing, an adjuster, and an indicator structure. The base and the indicator structure are fixed structures, while the housing sleeved on the base is a rotating structure. When the user uses the product with this knob assembly, the user rotates the outer housing to drive the rotating part of the adjuster to rotate, thereby changing the electrical signal output by the knob and realizing the adjustment function.

[0032] Furthermore, the outer wall of the housing has a scale structure distributed around the rotation axis, and the indicator structure is offset to one side of the rotation axis. Thus, the scale structure distributed on the outer wall of the housing can rotate with the housing and sequentially align with the offset indicator structure, so that the user can determine the rotation angle according to the scale structure currently corresponding to the indicator structure. In this utility model, the indicator structure is directly made on the outer wall of the housing, thereby integrating the indicator points and indicator marks in the prior art onto the knob assembly, thus avoiding the problems of peeling and blurring caused by printing the indicator marks on the device housing, and ensuring the accuracy of the user's control of the knob rotation angle. Attached Figure Description

[0033] The present invention will be further described below with reference to the accompanying drawings:

[0034] Figure 1 This is a cross-sectional structural schematic diagram of the knob assembly provided in this embodiment of the utility model;

[0035] Figure 2This is a disassembly diagram of the knob assembly provided in this embodiment of the utility model;

[0036] Figure 3 This is a schematic diagram showing the connection relationship between the housing and the base in the knob assembly provided in this embodiment of the utility model;

[0037] Figure 4 This is a schematic diagram of the structure of the cooking equipment provided in this embodiment of the utility model.

[0038] Explanation of reference numerals in the attached figures:

[0039] Base 100; Base 110; Mounting post 111; Annular boss 112; Mating seat 120; Clearance hole 121; Mating part 122; Housing 200; Scale structure 201; Indicator cylinder 210; Connecting plate 220; First arc-shaped hole 221; Second arc-shaped hole 222; Positioning buckle 223; Mating tooth 224; Second annular support part 225; First mating tooth 224a; Second mating tooth 224b; Drive part 230; Adjuster 300; Fixed part 310; Rotating part 320; Indicating structure 400; Cover plate 500; Fixed hole 510; First annular support part 520; Connecting buckle 530; Circuit board 600; Heating shell 10; Knob assembly 20. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain this utility model and should not be construed as limiting it.

[0041] The terms "an embodiment," "example," or "trademark" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this utility model. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0042] To address the aforementioned technical problems, as one aspect of this utility model, a knob assembly is provided, such as... Figures 1 to 2 As shown, the knob assembly includes a base 100, a housing 200, an adjuster 300, and an indicating structure 400. The fixed portion 310 of the adjuster 300 is fixedly connected to the base 100, and the rotating portion 320 of the adjuster 300 is fixedly connected to the housing 200. The housing 200 is sleeved on the base 100 and can rotate relative to the housing 200 about the rotation axis of the adjuster 300, thereby driving the rotating portion 320 of the adjuster 300 to rotate. The indicating structure 400 is fixedly connected to the base 100 and located on one side of the rotation axis. Figure 3As shown, the outer wall of the housing 200 has a scale structure 201 distributed around the rotation axis.

[0043] The knob assembly provided by this utility model includes a base 100, a housing 200, an adjuster 300, and an indicating structure 400. The base 100 and the indicating structure 400 are fixed structures, while the housing 200 sleeved on the base 100 is a rotating structure. When using a product with this knob assembly, the user rotates the outer housing 200 to drive the rotating part 320 of the adjuster 300 to rotate, thereby changing the electrical signal output by the knob and realizing the adjustment function.

[0044] Furthermore, the outer wall of the housing 200 has a scale structure 201 distributed around the rotation axis (i.e., corresponding to the indicator marks in the prior art), and the indicator structure 400 is offset to one side of the rotation axis (corresponding to the indicator point in the prior art). Thus, the scale structure 201 distributed on the outer wall of the housing 200 can rotate with the housing 200 and sequentially align with the offset indicator structure 400, so that the user can determine the rotation angle according to the scale structure 201 currently corresponding to the indicator structure 400. In this utility model, the indicator structure 400 is directly made on the outer wall of the housing 200, thereby integrating the indicator points and indicator marks in the prior art onto the knob assembly, thus avoiding the problems of peeling and blurring caused by printing the indicator marks on the device housing, and ensuring the accuracy of the user's control of the knob rotation angle.

[0045] It is understandable that the scale structure 201 is a mechanical structure on the outer surface of the housing 200, specifically a protrusion or groove corresponding to the shape of symbols such as temperature and time. Figure 3 (The image shows a raised structure); or, in other embodiments of this utility model, it can also be a structure made on the surface of the housing 200 by means of other materials different from the housing 200, for example, materials of different materials, colors and textures are welded and fixed to the surface of the housing 200 by hot melt welding, or a pattern structure is formed by screen printing on the surface of the housing 200.

[0046] Optionally, in addition to the symbols mentioned above, the pattern of the scale structure 201 may also include multiple circumferentially distributed scale lines, scale points, and other features. Figure 3 The width of the indicator bar shown gradually increases or decreases along the circumference, etc.

[0047] As a preferred embodiment of this utility model, such as Figures 1 to 2As shown, the housing 200 includes an indicator cylinder 210, a connecting plate 220, and a driving part 230. The indicator cylinder 210 is sleeved on the base 100 around a rotation axis. A scale structure 201 is formed on the outer surface of the indicator cylinder 210. The connecting plate 220 is located on one side of the base 100 along the rotation axis and is fixedly connected to the inner wall of the indicator cylinder 210. The driving part 230 is fixedly disposed on the side of the connecting plate 220 facing the base 100 and is fixedly connected to the rotating part 320 of the adjuster 300. A first arc-shaped hole 221 is formed on the connecting plate 220 and extends along the thickness direction of the connecting plate 220. The first arc-shaped hole 221 extends around the rotation axis. One end of the indicator structure 400 along the rotation axis is fixedly connected to the base 100, and the other end of the indicator structure 400 passes through the first arc-shaped hole 221.

[0048] In this embodiment of the utility model, the housing 200 includes an indicator cylinder 210, a connecting plate 220 and a driving part 230. The indicator cylinder 210 is sleeved around the base 100 to form a circumferential limit, and the connecting plate 220 contacts the top of the base (referring to the top shown in the figure) to form a vertical limit, thereby ensuring the stability of the position of the housing 200 and thus ensuring the overall structural strength of the knob assembly.

[0049] To further improve the overall structural strength of the knob assembly, preferably, such as Figures 1 to 2 As shown, the base 100 includes a base 110 and a mating seat 120. The mating seat 120 is fixedly connected to the base 110 and is located between the base 110 and the connecting plate 220. The indicating structure 400 is fixedly connected to the mating seat 120. A clearance hole 121 is formed in the mating seat 120, which extends along the rotation axis. The rotating part 320 of the adjuster 300 passes through the clearance hole 121 and is fixedly connected to the drive part 230.

[0050] The connecting plate 220 has multiple positioning buckles 223 on the side facing the base 110. The multiple positioning buckles 223 pass through the clearance hole 121 and contact the surface of the mating seat 120 facing the base 110.

[0051] In this embodiment of the utility model, the connecting plate 220 has a plurality of positioning buckles 223 on the side facing the base 110. The positioning buckles 223 pass through the clearance hole 121 of the mating seat 120 and make locking contact with the bottom surface (referring to the bottom shown in the figure) of the mating seat 120, thereby fixing the relative position between the connecting plate 220 and the mating seat 120 in the vertical direction, thereby ensuring the overall structural strength of the knob assembly.

[0052] Optionally, the base 110 and the mating seat 120 are connected by fastener assembly.

[0053] Optionally, such as Figures 1 to 2As shown, a mating part 122 is fixedly provided on the side of the mating seat 120 away from the base 110. A mating hole is formed in the mating part 122 that runs through the rotation axis. The end of the indicator structure 400 facing the base 110 is fixedly provided in the mating hole.

[0054] Optionally, the indicator structure 400 and the mating hole of the mating part 122 are interference fits.

[0055] In other embodiments of this utility model, the indicator structure 400 and the mating part 122 can also be fixedly connected by other means such as bonding, assembly connection, and hot melt welding.

[0056] Optionally, such as Figures 1 to 2 As shown, the cross-sectional shape of the mating hole is elongated, and correspondingly, the cross-sectional shape of the mating part 122 is also elongated.

[0057] In other embodiments of this utility model, the cross-sectional shape of the mating part 122 may also be a triangle, a gourd shape, or other shapes that are convenient for indicating direction.

[0058] As an optional embodiment of this utility model, such as Figure 1 As shown, a mating groove is formed on the side of the drive unit 230 facing the base 100. The rotating part 320 of the regulator 300 has a non-circular cross-sectional shape along the axis of rotation. The shape of the mating groove corresponds to the shape of the rotating part 320 of the regulator 300, and the rotating part 320 of the regulator 300 is accommodated in the mating groove.

[0059] Optionally, such as Figure 2 As shown, the cross-sectional shape of the rotating part 320 of the regulator 300 can be a circle with a portion cut off to obtain a flat edge shape. Alternatively, in other embodiments of this utility model, the cross-sectional shape of the rotating part 320 can also be a triangle, rectangle, hexagon, or other non-circular shape.

[0060] As an optional embodiment of this utility model, such as Figure 2 As shown, the connecting plate 220 has a plurality of mating teeth 224 on the side facing the base 100. The plurality of mating teeth 224 are distributed around the rotation axis. The base 100 has a protrusion 123 on the side facing the connecting plate 220. The plurality of mating teeth 224 can rotate with the housing 200 and contact the protrusion 123 in sequence.

[0061] In this embodiment of the utility model, the bottom of the connecting plate 220 has a plurality of mating teeth 224. The mating teeth 224 can collide with the protrusion 123 when rotating with the housing 200 to achieve vibration feedback. At the same time, a certain friction force is generated between the housing 200 and the base 100 to ensure the stability of the rotation angle of the knob assembly.

[0062] As an optional embodiment of this utility model, such as Figure 2 As shown, the plurality of mating teeth 224 includes a plurality of first mating teeth 224a and a plurality of second mating teeth 224b. The distance between the first mating teeth 224a and the base 100 is smaller than the distance between the second mating teeth 224b and the base 100 (i.e., the first mating teeth 224a are larger and the second mating teeth 224b are smaller). The plurality of second mating teeth 224b are distributed around the rotation axis, and the plurality of first mating teeth 224a are distributed around the rotation axis among the second mating teeth 224b.

[0063] Understandably, the vibration feedback amplitude of the first mating tooth 224a (large tooth) is greater than that of the second mating tooth 224b (small tooth), so that users can quickly determine the current gear based on the vibration feedback and improve the user experience.

[0064] Optionally, such as Figure 2 As shown, the multiple mating teeth 224 include multiple sets of second mating teeth 224b, each set including multiple second mating teeth 224b, and multiple first mating teeth 224a are distributed around the rotation axis between adjacent sets of second mating teeth 224b.

[0065] Optionally, such as Figure 2 As shown, each set of second mating teeth 224b includes two second mating teeth 224b.

[0066] Optionally, such as Figure 2 As shown, the protrusion 123 is tapered at the end facing the mating tooth 224.

[0067] As an optional embodiment of this utility model, such as Figures 1 to 2 As shown, the knob assembly also includes a cover plate 500, which is stacked on the side of the housing 200 away from the base 100. A fixing hole 510 is formed in the cover plate 500, which extends along the thickness direction of the cover plate 500. One end of the indicator structure 400 away from the base 100 passes through the fixing hole 510. The cover plate 500 can cover the first arc-shaped hole 221, the second arc-shaped hole 222, and other structures, making the appearance of the knob assembly more concise.

[0068] Optionally, such as Figures 1 to 2 As shown, a receiving groove is formed between the side of the connecting plate 220 away from the base 100 and the end of the indicator cylinder 210, and the cover plate 500 is received in the receiving groove.

[0069] Optionally, such as Figure 1 As shown, the cover plate 500 has a first annular support portion 520 on the side facing the base 100. The first annular support portion 520 extends around the rotation axis and contacts the bottom of the receiving groove, thereby reducing the contact area between the connecting plate 220 and the cover plate 500, and further reducing the friction between the connecting plate 220 and the cover plate 500.

[0070] Optionally, such as Figure 1 As shown, the connecting plate 220 has a second annular support portion 225 on the side opposite to the base 100. The second annular support portion 225 extends around the rotation axis and can limit the bottom surface of the cover plate 500 without increasing friction.

[0071] Optionally, such as Figure 1 As shown, the second annular support portion 225 is located inside the first arc-shaped hole 221.

[0072] As an optional embodiment of this utility model, such as Figure 1 As shown, a connecting buckle 530 is fixedly provided on the side of the cover plate 500 facing the base 100, and a second arc-shaped hole 222 is formed on the side wall of the housing 200 away from the base 100. The second arc-shaped hole 222 extends around the rotation axis, and the connecting buckle 530 passes through the second arc-shaped hole 222 and is connected to the base 100.

[0073] Optionally, such as Figure 1 As shown, the connecting buckle 530 passes through the clearance hole 121 and contacts the surface of the mating seat 120 facing the base 110.

[0074] Optionally, the connecting buckle 530 and the fixing hole 510 are located on both sides of the rotating shaft.

[0075] As an optional embodiment of this utility model, such as Figure 1 As shown, the second annular support portion 225 is located between the first arc-shaped hole 221 and the second arc-shaped hole 222.

[0076] As an optional embodiment of this utility model, such as Figures 1 to 2 As shown, the knob assembly also includes a circuit board 600, and the fixing part 310 of the adjuster 300 is fixedly disposed on the circuit board 600. The circuit board 600 is fixedly connected to the base 100.

[0077] Understandably, the circuit board 600 may be equipped with electronic components for signal output, such as digital-to-analog converter modules and filters. The signal from the regulator 300 is processed by the circuit board 600 and output as an output signal to the controller of the cooking equipment, thereby realizing the temperature or time setting adjustment function.

[0078] Optionally, such as Figures 1 to 2As shown, the bottom wall of the base 110 has a plurality of mounting posts 111, and mounting holes are formed in the mounting posts 111. The circuit board 600 has a plurality of mounting through holes, and the positions of the plurality of mounting through holes correspond one-to-one with the positions of the plurality of mounting posts 111. A plurality of fasteners pass through the plurality of mounting through holes and enter the plurality of mounting holes in sequence to fix the circuit board 600 to the base 110.

[0079] As an optional embodiment of this utility model, such as Figures 1 to 2 As shown, an annular boss 112 is formed on the outer side wall of the base 100. The annular boss 112 extends around the rotation axis and contacts the inner side wall of the housing 200. This achieves precise positioning of the horizontal position of the housing 200 while reducing the contact area between the inner wall of the housing 200 and the base 100, thereby reducing the friction between the housing 200 and the base 100.

[0080] As a second aspect of this utility model, a cooking device is provided, such as... Figure 4 As shown, the cooking device includes a heating shell 10 and a heating component. The heating shell 10 has a heating cavity, and the heating component is used to heat the object in the heating cavity. The cooking device also includes at least one knob assembly 20 provided in this embodiment of the invention. The base 100 of the knob assembly 20 is fixedly connected to the heating shell 10, and the adjuster 300 of the knob assembly 20 is electrically connected to the heating component.

[0081] Optionally, such as Figure 4 As shown, the cooking device can be an electric oven.

[0082] Alternatively, in other embodiments of this utility model, the cooking device may be other types of cooking appliances such as electric pressure cookers, electric griddles, rice cookers, and air fryers.

[0083] The above are merely specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A knob assembly, characterized in that, The device includes a base (100), a housing (200), an adjuster (300), and an indicating structure (400). The fixed part (310) of the adjuster (300) is fixedly connected to the base (100), and the rotating part (320) of the adjuster (300) is fixedly connected to the housing (200). The housing (200) is sleeved on the base (100) and can rotate relative to the housing (200) about the rotation axis of the adjuster (300) to drive the rotating part (320) of the adjuster (300) to rotate. The indicating structure (400) is fixedly connected to the base (100) and located on one side of the rotation axis. The outer wall of the housing (200) has a scale structure (201) distributed around the rotation axis.

2. The knob assembly according to claim 1, characterized in that, The housing (200) includes an indicator cylinder (210), a connecting plate (220), and a driving unit (230). The indicator cylinder (210) is sleeved on the base (100) around the rotation axis. The scale structure (201) is formed on the outer surface of the indicator cylinder (210). The connecting plate (220) is located on one side of the base (100) along the rotation axis and is fixedly connected to the inner wall of the indicator cylinder (210). The driving unit (230) is fixedly disposed on the connecting plate (220). The connecting plate (220) is fixedly connected to the rotating part (320) of the regulator (300) on the side facing the base (100). A first arc-shaped hole (221) is formed on the connecting plate (220) and extends along the thickness direction of the connecting plate (220). The first arc-shaped hole (221) extends around the rotation axis. One end of the indicating structure (400) is fixedly connected to the base (100) along the rotation axis, and the other end of the indicating structure (400) passes through the first arc-shaped hole (221).

3. The knob assembly according to claim 2, characterized in that, The base (100) includes a base (110) and a mating seat (120). The mating seat (120) is fixedly connected to the base (110) and is located between the base (110) and the connecting plate (220). The indicating structure (400) is fixedly connected to the mating seat (120). A clearance hole (121) is formed in the mating seat (120) that extends along the direction of the rotation axis. The rotating part (320) of the adjuster (300) passes through the clearance hole (121) and is fixedly connected to the driving part (230). The connecting plate (220) has a plurality of positioning buckles (223) on the side facing the base (110), and the plurality of positioning buckles (223) pass through the clearance hole (121) and contact the surface of the mating seat (120) on the side facing the base (110).

4. The knob assembly according to claim 2, characterized in that, The drive unit (230) has a mating groove on the side facing the base (100). The rotating part (320) of the regulator (300) has a non-circular cross-sectional shape along the axis of rotation. The shape of the mating groove corresponds to the shape of the rotating part (320) of the regulator (300), and the rotating part (320) of the regulator (300) is accommodated in the mating groove.

5. The knob assembly according to claim 2, characterized in that, The connecting plate (220) has a plurality of mating teeth (224) on the side facing the base (100), and the plurality of mating teeth (224) are distributed around the rotation axis. The base (100) has a protrusion (123) on the side facing the connecting plate (220), and the plurality of mating teeth (224) can rotate with the housing (200) and contact the protrusion (123) in sequence.

6. The knob assembly according to any one of claims 1 to 5, characterized in that, The knob assembly also includes a cover plate (500) stacked on the side of the housing (200) away from the base (100), and a fixing hole (510) is formed in the cover plate (500) through the thickness direction of the cover plate (500), and one end of the indicating structure (400) away from the base (100) passes through the fixing hole (510).

7. The knob assembly according to claim 6, characterized in that, A connecting buckle (530) is fixedly provided on the side of the cover plate (500) facing the base (100). A second arc-shaped hole (222) is formed on the side wall of the housing (200) away from the base (100). The second arc-shaped hole (222) extends around the rotation axis. The connecting buckle (530) passes through the second arc-shaped hole (222) and is connected to the base (100).

8. The knob assembly according to any one of claims 1 to 5, characterized in that, The knob assembly also includes a circuit board (600), the fixing part (310) of the regulator (300) is fixedly disposed on the circuit board (600), and the circuit board (600) is fixedly connected to the base (100).

9. The knob assembly according to any one of claims 1 to 5, characterized in that, An annular boss (112) is formed on the outer side wall of the base (100), the annular boss (112) extends around the rotation axis, and the annular boss (112) contacts the inner side wall of the housing (200).

10. A cooking apparatus comprising a heating shell (10) and a heating assembly, wherein the heating shell (10) has a heating cavity, and the heating assembly is used to heat an object in the heating cavity, characterized in that, The cooking device further includes at least one knob assembly (20) as described in any one of claims 1 to 9, the base (100) of the knob assembly (20) being fixedly connected to the heating shell (10), and the regulator (300) of the knob assembly (20) being electrically connected to the heating element.

Images