Knob assembly, main machine and food processor

Abstract

The application provides a knob assembly, a host and a food processor. The knob assembly comprises a knob and a control board assembly. The control board assembly is provided with a knob switch and a positioning portion. The positioning portion is located at the outer periphery of the knob switch. The knob is rotationally installed on the knob switch. The knob and the positioning portion jointly form a first drainage passage and a second drainage passage. The first drainage passage is arranged at the periphery of the second drainage passage and communicates with the second drainage passage. The two drainage passages can effectively prevent water from entering the interior of the control board assembly, have good waterproof effect and simple structure.

Description

Technical Field

[0001] This application relates to the field of small household appliance technology, and in particular to a knob assembly, a main unit, and a food processor. Background Technology

[0002] Food processors have gained popularity and recognition, becoming an indispensable appliance in people's lives. However, in traditional food processors, the knobs are not waterproof, allowing water to easily enter the control panel and the inside of the main unit, causing damage to the machine.

[0003] Therefore, it is necessary to provide an improved knob assembly, main unit, and food processor to solve the above problems. Utility Model Content

[0004] This application provides a waterproof knob assembly, main unit, and food processor.

[0005] This application discloses a knob assembly, including a knob and a control board assembly. The control board assembly is provided with a knob switch and a positioning part, the positioning part being located on the outer periphery of the knob switch. The knob is rotatably mounted on the knob switch, and the knob and the positioning part together form a first drainage passage and a second drainage passage. The first drainage passage is located on the periphery of the second drainage passage and communicates with the second drainage passage.

[0006] Thus, the knob and control panel assembly together form the first drainage passage and the second drainage passage. When there is little water, it drains through the first drainage passage, and when there is a lot of water, it can simultaneously enter the second drainage passage for drainage, avoiding entering the interior of the control panel assembly. The two drainage passages are formed by the knob and control panel assembly, which has a simple structure and does not require further sealing or waterproofing components.

[0007] Furthermore, both the first drainage passage and the second drainage passage are ring-shaped, and the second drainage passage is radially connected to the first drainage passage. The water inlet and outlet of the second drainage passage both pass through the first drainage passage.

[0008] Thus, the connection path between the first and second drainage channels is simple, without complex detours, and the drainage speed is fast.

[0009] Furthermore, the knob includes an end plate and a surrounding plate and an annular waterproof rib located on one side of the end plate; the positioning part includes a positioning outer ring and an annular water-blocking rib, the surrounding plate and the positioning outer ring together form the first drainage passage; the surrounding plate, the annular waterproof rib, the positioning outer ring and the annular water-blocking rib together form the second drainage passage.

[0010] Thus, the second drainage channel and the first drainage channel are located on the inner and outer sides of the positioning outer ring, respectively. When the water volume is small, the positioning outer ring can act as a water barrier, and the water bypasses the outside of the positioning outer ring and is discharged through the first drainage channel. When the water volume is large, the water bypasses the positioning outer ring, the annular waterproof rib and the annular water barrier rib in sequence before being discharged, and will not enter the interior of the control board assembly, causing damage to the machine.

[0011] Furthermore, the inlet and outlet of the first drainage passage are located at the upper and lower parts of the knob, respectively, and on the side opposite to the end plate. The connection between the second drainage passage and the first drainage passage is located on the side close to the end plate.

[0012] In this way, water can be quickly discharged from top to bottom through the first and second drainage channels.

[0013] Furthermore, both the enclosure and the positioning outer ring are annular, and the enclosure, the positioning outer ring, the annular waterproof rib, and the annular water-blocking rib are arranged sequentially from the outside to the inside; the enclosure and the positioning outer ring partially overlap in the axial direction of the knob, and the annular waterproof rib and the annular water-blocking rib partially overlap in the axial direction of the knob.

[0014] Thus, the enclosure and the positioning outer ring overlap in the upper axial direction of the knob, forming a first drainage channel between them; the annular waterproof rib and the annular water-blocking rib overlap in the upper axial direction of the knob, thereby forming a complete water-blocking structure in the upper axial direction of the knob, so that water falling into the second drainage channel first bypasses the annular waterproof rib and then bypasses the annular water-blocking rib, avoiding damage to the knob switch by entering the inner side of the annular waterproof rib and the annular water-blocking rib.

[0015] Furthermore, in the radial direction of the knob, the width of the first drainage passage is smaller than the width of the second drainage passage; in the axial direction of the knob, the length of the second drainage passage is greater than the length of the positioning outer ring, and the length of the first drainage passage is equal to the length of the overlapping portion of the enclosure and the positioning outer ring.

[0016] Thus, the second drainage passage is larger than the first drainage passage in both the axial and radial directions of the knob, which greatly increases the water storage capacity of the knob assembly and effectively prevents water from entering the control panel assembly due to untimely drainage.

[0017] Furthermore, the control board assembly includes a front shell and a control board that are assembled and fixed together. The positioning part is integrally formed on the front shell, and the rotary switch is disposed on the control board. The positioning part also includes a positioning inner ring disposed inside the positioning outer ring, and the positioning inner ring is coaxially disposed with the positioning outer ring. The rotary switch includes a switch post and a rotating shaft. The switch post cooperates with the positioning inner ring, and the rotating shaft is connected to the knob.

[0018] Thus, the positioning part is integrally formed on the front shell, which has a simple structure and is easy to manufacture; the inner positioning ring and the outer positioning ring together ensure the concentric positioning between the knob and the panel.

[0019] This application also discloses a host, including a panel and a knob assembly as described above; the panel has a first positioning hole, and the positioning part passes through the first positioning hole and protrudes from the outer side of the panel.

[0020] Thus, the positioning part protrudes from the outer side of the panel for precise positioning of the control board assembly and the panel.

[0021] Furthermore, the outer side of the panel, the knob, and the control panel assembly together form a water inlet loop surrounding the first drainage passage; the control panel assembly is provided with a waterproof surface surrounding the positioning part and in close contact with the inner side of the panel; the knob assembly and the panel are inclined relative to the horizontal plane.

[0022] In this way, when the water volume is small, it can also flow downward through the water inlet loop at the same time; the knob assembly and panel are tilted relative to the horizontal plane, and the first drainage passage and the second drainage passage are also tilted accordingly, which can also effectively reduce the backflow of water from the gap between the annular waterproof rib and the annular water-blocking rib, and prevent water from entering the interior of the control board assembly, causing the electronic components to become damp or short-circuited after evaporation.

[0023] This application also discloses a food processor, including a blending cup assembly and a main unit as described above, wherein the blending cup assembly is assembled to the top of the main unit.

[0024] The present application has the following advantages: the knob and control panel assembly together form a first drainage passage and a second drainage passage. When there is little water, it drains through the first drainage passage. When there is a lot of water, it can drain through the second drainage passage at the same time, avoiding entering the interior of the control panel assembly, thus having a better waterproof effect. The two drainage passages are formed by the knob and control panel assembly, which has a simple structure and does not require further sealing or waterproofing components.

[0025] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0027] Figure 1 This is a perspective view of the food processor in the embodiments of this application.

[0028] Figure 2 This is an exploded view of the host in an embodiment of this application.

[0029] Figure 3 This is a perspective view of the panel in an embodiment of this application.

[0030] Figure 4 This is a perspective view of the knob in the embodiment of this application.

[0031] Figure 5 This is an exploded view of the control board assembly in an embodiment of this application.

[0032] Figure 6 yes Figure 5 A perspective view of the front shell of the central control panel assembly.

[0033] Figure 7 yes Figure 6 A stereoscopic view of the front shell from another perspective.

[0034] Figure 8 yes Figure 5 A 3D view of the control board of the central control board assembly.

[0035] Figure 9 This is a cross-sectional view of the front shell, rear shell, and control board assembled in the embodiment of this application.

[0036] Figure 10 This is a partial cross-sectional view of the panel and knob assembly assembled in an embodiment of this application.

[0037] Figure 11 This is a schematic diagram of the first drainage passage in an embodiment of this application.

[0038] Figure 12 This is a schematic diagram of the flow of the second drainage passage in the embodiments of this application.

[0039] Figure 13 This is a cross-sectional view of the knob and front shell assembled in an embodiment of this application. Detailed Implementation

[0040] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0041] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0042] The host and food processor of the present application embodiments will be described in detail below with reference to the accompanying drawings. Unless otherwise specified, the features of the following embodiments and implementation methods can complement or combine with each other.

[0043] like Figure 1 and Figure 2 As shown, this application provides a host 100, including a panel 10, a knob 20, a control board assembly 30, and a base 40. The knob 20 and the control board assembly 30 together form a knob assembly. The knob 20 is mounted on the control board assembly 30 and clamps the panel 10 between the control board assembly 30 and the knob 20, and the knob 20 can rotate relative to the panel 10. The base 40 is located at the bottom of the panel 10.

[0044] Please refer to the following at the same time Figure 3 The panel 10 has a first positioning hole 11. The knob 20 and the control board assembly 30 are positioned opposite each other on both sides of the first positioning hole 11 and are connected by passing through the first positioning hole 11.

[0045] like Figure 4 As shown, the knob 20 is circular and includes an end plate 21, a surrounding plate 22 located on one side of the end plate 21, and a mounting post 23. The surrounding plate 22 is annular and surrounds the end plate 21, and the mounting post 23 has a mounting groove 231. The mounting post 23 passes through the first positioning hole 11, and the mounting groove 231 cooperates with the control board assembly 30 to realize the connection between the knob 20 and the control board assembly 30.

[0046] like Figure 5 As shown, the control panel assembly 30 includes a front shell 31, a control panel 32, and a rear shell 33. The front shell 31 is located between the control panel 32 and the panel 10, and the control panel 32 is located between the front shell 31 and the rear shell 33. The front shell 31 and the rear shell 33 together cover the control panel 32, which can form a protection for the control panel 32 and prevent external moisture and dust from affecting the performance of the control panel 32.

[0047] Specifically, please refer to the following: Figure 7 and Figure 9The front shell 31, control plate 32, and rear shell 33 are positioned by a positioning structure. The positioning structure includes a positioning post 318 on the front shell 31, a first opening 322 on the control plate 32, and a second opening 331 on the rear shell 33. The positioning post 318 extends horizontally and passes sequentially through the first opening 322 and the second opening 331, thus positioning the front shell 31, control plate 32, and rear shell 33. There are two positioning posts 318, two first openings 322, and two second openings 331.

[0048] The front shell 31, rear shell 33, and control board 32 are assembled together using fasteners 34. The front shell 31 has a fixing post 319, the control board 32 has a first fixing hole 323, and the rear shell 33 has a second fixing hole 332. The fixing post 319 extends horizontally, and the fasteners 34 pass through the second fixing hole 332 and the first fixing hole 323 in sequence, extending into the fixing post 319. The fasteners 34 and the fixing post 319 are press-fitted, thus securing the front shell 31, control board 32, and rear shell 33. There are four fixing posts 319, four first fixing holes 323, and four second fixing holes 332.

[0049] The positioning structure and fastener 34 make the assembly of the front shell 31, control board 32 and rear shell 33 more precise and efficient, which helps to simplify the assembly process.

[0050] like Figure 6 As shown, the front cover 31 is provided with a positioning part 301 and a main board part 302. The positioning part 301 protrudes outward from the main board part 302. The positioning part 301 includes a coaxial positioning outer ring 311 and a positioning inner ring 312, both of which are annular. The positioning inner ring 312 forms a second positioning hole 3121. The positioning part 301 passes through the first positioning hole 11 and protrudes from the outer side of the panel 10. Specifically, the positioning outer ring 311 of the positioning part 301 passes through the panel 10 and engages with the first positioning hole 11 to achieve accurate positioning between the panel 10 and the control board assembly 30. The positioning outer ring 311 protrudes from the outer side of the panel 10 towards the side closer to the knob 20. The first positioning hole 11 is fitted over the positioning outer ring 311 and contacts the positioning outer ring 311 to restrict the radial movement of the positioning outer ring 311.

[0051] According to one embodiment of this application, the positioning part 301 is integrally formed on the front shell 31, which has a simple structure and is easy to manufacture and process.

[0052] Please refer to the following at the same time Figure 8The control panel 32 is equipped with a rotary switch 321, which engages with the second positioning hole 3121 and the knob 20. Specifically, the rotary switch 321 includes a switch post 3211, a rotating shaft 3212, and a switch body 3213. The two ends of the switch post 3211 are respectively connected to the switch body 3213 and the rotating shaft 3212. The switch post 3211 engages with the second positioning hole 3121 of the positioning inner ring 312, and the rotating shaft 3212 is connected to the knob 20, thereby achieving positioning between the knob 20 and the control panel assembly 30. Specifically, both the rotating shaft 3212 and the switch post 3211 pass through the second positioning hole 3121, which is sleeved on the outside of the switch post 3211 and contacts the switch post 3211 to restrict the radial movement of the rotary switch 321.

[0053] Thus, by setting coaxial positioning outer ring 311 and positioning inner ring 312 on the front housing 31, the positioning outer ring 311 cooperates with the first positioning hole 11 to achieve positioning between the panel 10 and the control board assembly 30, and the positioning inner ring 312 cooperates with the switch post 3211 to achieve positioning between the knob 20 and the control board assembly 30. The coaxial setting of the positioning outer ring 311 and positioning inner ring 312 achieves the concentricity of the panel 10 and the knob 20, avoiding misalignment of the silkscreen on the knob 20 and the panel 10, effectively improving the user experience and product aesthetics. At the same time, the main unit 100 has fewer parts, reducing the reliance on high-precision parts and reducing installation errors and complexity.

[0054] like Figure 4 , Figure 5 , Figure 6 and Figure 8 As shown, after the knob 20 is assembled with the panel 10 and control board assembly 30, the surrounding plate 22 is located outside the positioning outer ring 311, and the rotating shaft 3212 extends into and connects to the mounting groove 231. When the knob 20 rotates, the rotating shaft 3212 can be driven to rotate through the mounting post 23, thereby controlling the main unit 100. In this way, the rotational action of the knob 20 is accurately transmitted, ensuring the smooth operation and control precision of the knob 20.

[0055] In this embodiment, a flat section is provided on the cross section of the rotating shaft 3212, and the cross-sectional shape of the mounting groove 231 corresponds to the cross-sectional shape of the rotating shaft 3212, so that the rotating shaft 3212 and the mounting column 23 can rotate synchronously.

[0056] Please refer to the following at the same time Figure 10 The knob 20 is also provided with a first latch 26, and the front cover 31 is also provided with a number of second latches 317 that cooperate with the first latch 26. The number of second latches 317 are distributed circumferentially and are located between the positioning outer ring 311 and the positioning inner ring 312.

[0057] Thus, the knob 20 and the front shell 31 can be assembled through the elastic deformation of the first hook 26 and the second hook 317, making disassembly convenient and preventing them from falling off. At the same time, the second hook 317, distributed circumferentially, can provide uniform locking force, ensuring smooth rotation of the knob 20 and improving the user's operating experience.

[0058] Furthermore, such as Figure 7 , Figure 8 As shown, in this embodiment, the switch body 3213 is rectangular. Anti-rotation surfaces 3214 are provided on both sides of the switch body 3213, and two anti-rotation ribs 313 protruding towards the control plate 32 are provided on the front shell 31. The anti-rotation ribs 313 fit snugly against the anti-rotation surfaces 3214. Thus, the cooperation between the anti-rotation ribs 313 and the anti-rotation surfaces 3214 effectively restricts the position of the switch body 3213, preventing damage to the pins or internal structure of the rotary switch 321 due to excessive force, thereby extending its service life.

[0059] Furthermore, such as Figure 4 and Figure 6 As shown, the positioning part 301 of the front shell 31 also includes an annular water-retaining rib 314. The annular water-retaining rib 314 is located between the positioning outer ring 311 and the positioning inner ring 312. An annular waterproof rib 24 is provided on the knob 20, and the annular waterproof rib 24 is located between the first hook 26 and the mounting post 23. Please also refer to... Figure 10 The enclosure 22, positioning outer ring 311, annular waterproof rib 24, annular water-blocking rib 314, and mounting column 23 are arranged sequentially from the outside to the inside.

[0060] In this way, a multi-layered waterproof barrier can be formed, effectively preventing water or large particles from the outside of the host 100 from entering the control board assembly 30, thereby improving the dustproof and waterproof capabilities of the host 100.

[0061] Furthermore, a waterproof surface 316 is provided on the side of the front housing 31 near the panel 10. The waterproof surface 316 surrounds the positioning outer ring 311 and is in close contact with the inner side of the panel 10. In this way, a planar sealing structure can be formed between the panel 10 and the front housing 31 to prevent water from seeping into the control panel assembly 30, further enhancing the waterproof effect.

[0062] The knob 20 and the positioning part 301 together form a first drainage passage 51 and a second drainage passage 52. The first drainage passage 51 is located around the second drainage passage 52 and communicates with the second drainage passage 52. Both the first drainage passage 51 and the second drainage passage 52 are annular, and the second drainage passage 52 communicates radially with the first drainage passage 51. According to one embodiment of this application, the connection between the second drainage passage 52 and the first drainage passage 51 is entirely annular. Water inlet and outlet of the second drainage passage 52 both pass through the first drainage passage 51.

[0063] The inlet 511 and outlet 512 of the first drainage passage 51 are located at the upper and lower parts of the knob 20, respectively, and on the side opposite to the end plate 21. The connection between the second drainage passage 52 and the first drainage passage 51 is located on the side closer to the end plate 21. In this way, water can be quickly discharged from top to bottom through the first drainage passage 51 and the second drainage passage 52. The surrounding plate 22 and the positioning outer ring 311 together form the first drainage passage 51.

[0064] The enclosure 22, the annular waterproof rib 24, the positioning outer ring 311, and the annular water-blocking rib 314 together form a second drainage passage 52. The enclosure 22, the positioning outer ring 311, the annular waterproof rib 24, and the annular water-blocking rib 314 partially overlap in the axial direction of the knob 20 to form the second drainage passage 52. Specifically, the enclosure 22 and the positioning outer ring 311 partially overlap in the axial direction of the knob 20, and the annular waterproof rib 24 and the annular water-blocking rib 314 partially overlap in the axial direction of the knob 20. The partial overlap of the enclosure 22 and the positioning outer ring 311 in the axial direction of the knob 20 forms a first drainage passage 51 between the outer circumferential surface of the positioning outer ring 311 and the enclosure 22. The inner circumferential surface of the positioning outer ring 311 and the inner circumferential surface of the enclosure 22, and the outer circumferential surface of the annular waterproof rib 24 and the outer circumferential surface of the annular water-blocking rib 314 form the second drainage passage 52. The second drainage passage 52 and the first drainage passage 51 are located on the inner and outer sides of the positioning outer ring 311, respectively. The two ends of the second drainage passage 52 are respectively closed by the end plate 21 and the main plate 302.

[0065] Thus, when water seeps in, it can be guided to drain along a specific drainage path through the gaps between the enclosure 22, the positioning outer ring 311, the annular waterproof rib 24, and the annular water-blocking rib 314, preventing water from accumulating in the gap between the knob 20 and the panel 10, thereby further enhancing the waterproof effect.

[0066] like Figure 11 As shown, when the water volume is low, the positioning outer ring 311 plays a major role in blocking water. As indicated by the arrow in the diagram, water between the panel 10 and the knob 20 flows circumferentially around the outside of the positioning outer ring 311 and exits the main unit 100 through the gap between the enclosure 22 and the panel 10, i.e., the first drainage passage 51. Because the waterproof surface 316 is in close contact with the inner side of the panel 10, water will not seep into the interior of the control panel assembly 30, thus preventing damage to the machine.

[0067] like Figure 12As shown, when there is a large amount of water, the enclosure 22, the positioning outer ring 311, the annular waterproof rib 24, and the annular water-blocking rib 314 work together to block the water. As indicated by the arrows in the diagram, water sequentially bypasses the positioning outer ring 311, the annular waterproof rib 24, and the annular water-blocking rib 314, entering the second drainage passage 52, and then flowing out of the main unit 100 through the gap between the enclosure 22 and the panel 10, i.e., the first drainage passage 51. Water will not enter the control panel assembly 30 from the inside of the knob 20, thus preventing damage to the machine. Because the annular waterproof rib 24 and the annular water-blocking rib 314 partially overlap in the axial direction of the knob 20, a continuous water-blocking structure is formed in the axial direction of the knob 20, preventing water falling into the second drainage passage 52 from entering the inner side of the annular waterproof rib 24 and the annular water-blocking rib 314 and damaging the knob switch 321.

[0068] Furthermore, in the radial direction of the knob 20, the width of the first drainage passage 51 is smaller than the width of the second drainage passage 52; in the axial direction of the knob 20, the length of the second drainage passage 52 is greater than the length of the positioning outer ring 311, and the length of the first drainage passage 51 is equal to the length of the overlapping portion of the surrounding plate 22 and the positioning outer ring 311. Thus, the dimensions of the second drainage passage 52 in both the axial and radial directions of the knob are larger than those of the first drainage passage 51, greatly increasing the water storage capacity of the knob assembly and effectively preventing untimely drainage from entering the control panel assembly 30.

[0069] The outer surface of panel 10, knob 20, and control board assembly 30 together form a water inlet loop 53 surrounding the first drainage passage 51. Thus, when the water volume is low, it can simultaneously flow downwards through the water inlet loop 53. The knob assembly and panel 10 are inclined relative to the horizontal plane, and the first drainage passage 51 and second drainage passage 52 are also correspondingly inclined. This effectively reduces backflow of water from the gap between the annular waterproof rib 24 and the annular water-blocking rib 314, preventing water from entering the interior of the control board assembly 30 and causing moisture damage or short circuits in electronic components after evaporation.

[0070] Furthermore, such as Figure 4 , Figure 6 and Figure 13 As shown, the knob 20 is also provided with a limiting rib 25, and the front shell 31 is also provided with a stop rib 315. The limiting rib 25 is located outside the mounting post 23 and extends radially, with one end of the limiting rib 25 connected to the annular waterproof rib 24. The stop rib 315 is located inside the positioning outer ring 311 and extends radially, with one end of the stop rib 315 connected to the positioning outer ring 311. The limiting rib 25 can abut against the stop rib 315 to limit the rotation range of the knob 20.

[0071] In this embodiment, there is one limiting rib 25 and two stopping ribs 315. The limiting rib 25 can rotate around the rotation axis 3212 within the range defined by the two stopping ribs 315. The position of the stopping ribs 315 can be flexibly set according to the rotation angle requirements of the knob 20 and the position of the silkscreen on the panel 10. When rotated to the limit position, the stopping rib 315 abuts against the limiting rib 25 in the circumferential direction to limit the rotation of the knob 20 within a certain range and prevent the knob switch 321 from being damaged by force.

[0072] like Figure 1 As shown, this application also provides a food processor, including a blending cup assembly 200 and a main unit 100 as described above. The blending cup assembly 200 is assembled to the top of the main unit 100.

[0073] The main unit and food processor of this application utilize a coaxial positioning outer ring 311 and a positioning inner ring 312 on the front housing 31. The positioning outer ring 311 engages with the first positioning hole 11 to achieve positioning between the panel 10 and the control board assembly 30, while the positioning inner ring 312 engages with the switch post 3211 to achieve positioning between the knob 20 and the control board assembly 30. The coaxial arrangement of the positioning outer ring 311 and the positioning inner ring 312 ensures the concentricity of the panel 10 and the knob 20, preventing misalignment of the silkscreen printing on the knob 20 and the panel 10, effectively improving user experience and product aesthetics. Simultaneously, the main unit 100 has fewer parts, reducing reliance on high-precision components and lowering installation errors and complexity.

[0074] This application provides a knob assembly, including a knob 20 and a control panel assembly 30. The control panel assembly 30 has a rotary switch 321 and a positioning part 301, with the positioning part 301 located on the outer periphery of the rotary switch 321. The knob 20 is rotatably mounted on the rotary switch 321, and the knob 20 and the positioning part 301 together form a first drainage passage 51 and a second drainage passage 52. When the water level is low, drainage occurs through the first drainage passage 51; when the water level is high, it can simultaneously enter the second drainage passage 52 for drainage, preventing water from entering the interior of the control panel assembly 30. The two drainage passages are formed by the knob 20 and the control panel assembly 30, resulting in a simple structure that eliminates the need for further sealing or waterproofing components. The first drainage passage 51 is located on the periphery of the second drainage passage 52, and its connection path to the second drainage passage 52 is simple, without complex or circuitous structures, resulting in fast drainage.

[0075] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A knob assembly, characterized in that, The device includes a knob (20) and a control panel assembly (30). The control panel assembly (30) is provided with a rotary switch (321) and a positioning part (301). The positioning part (301) is located on the outer periphery of the rotary switch (321). The knob (20) is rotatably mounted on the rotary switch (321). The knob (20) and the positioning part (301) together form a first drainage passage (51) and a second drainage passage (52). The first drainage passage (51) is located on the periphery of the second drainage passage (52) and communicates with the second drainage passage (52).

2. The knob assembly according to claim 1, characterized in that, Both the first drainage passage (51) and the second drainage passage (52) are ring-shaped. The second drainage passage (52) is radially connected to the first drainage passage (51). The water inlet and outlet of the second drainage passage (52) are both through the first drainage passage (51).

3. The knob assembly according to claim 1, characterized in that, The knob (20) includes an end plate (21), a surrounding plate (22) located on one side of the end plate (21), and an annular waterproof rib (24); the positioning part (301) includes a positioning outer ring (311) and an annular water-blocking rib (314), the surrounding plate (22) and the positioning outer ring (311) together form the first drainage passage (51); the surrounding plate (22), the annular waterproof rib (24), the positioning outer ring (311) and the annular water-blocking rib (314) together form the second drainage passage (52).

4. The knob assembly according to claim 3, characterized in that, The inlet (511) and outlet (512) of the first drainage passage (51) are located at the upper and lower parts of the knob (20) respectively and on the side opposite to the end plate (21). The connection between the second drainage passage (52) and the first drainage passage (51) is located on the side close to the end plate (21).

5. The knob assembly according to claim 3, characterized in that, The enclosure (22) and the positioning outer ring (311) are both annular. The enclosure (22), the positioning outer ring (311), the annular waterproof rib (24) and the annular water-blocking rib (314) are arranged sequentially from the outside to the inside. The enclosure (22) and the positioning outer ring (311) partially overlap in the axial direction of the knob (20), and the annular waterproof rib (24) and the annular water-blocking rib (314) partially overlap in the axial direction of the knob (20).

6. The knob assembly according to claim 5, characterized in that, In the radial direction of the knob (20), the width of the first drainage passage (51) is less than the width of the second drainage passage (52); in the axial direction of the knob (20), the length of the second drainage passage (52) is greater than the length of the positioning outer ring (311), and the length of the first drainage passage (51) is equal to the length of the overlapping portion of the enclosure (22) and the positioning outer ring (311).

7. The knob assembly according to claim 3, characterized in that, The control panel assembly (30) includes a front shell (31) and a control panel (32) that are assembled and fixed. The positioning part (301) is integrally formed on the front shell (31), and the rotary switch (321) is disposed on the control panel (32). The positioning part (301) also includes a positioning inner ring (312) disposed inside the positioning outer ring (311). The positioning inner ring (312) is coaxially disposed with the positioning outer ring (311). The rotary switch (321) includes a switch post (3211) and a rotating shaft (3212). The switch post (3211) cooperates with the positioning inner ring (312), and the rotating shaft (3212) is connected to the knob (20).

8. A host computer, characterized in that, Includes a panel (10) and a knob assembly as described in any one of claims 1-7; the panel (10) has a first positioning hole (11) and the positioning part (301) passes through the first positioning hole (11) and protrudes from the outer side of the panel (10).

9. The host computer according to claim 8, characterized in that, The outer side of the panel (10), the knob (20) and the control panel assembly (30) together form a water inlet loop (53) surrounding the first drainage passage (51); the control panel assembly (30) is provided with a waterproof surface (316) surrounding the positioning part (301) and in close contact with the inner side of the panel (10); the knob assembly and the panel (10) are inclined relative to the horizontal plane.

10. A food processor, characterized in that, It includes a mixing cup assembly (200) and a main unit (100) as described in any one of claims 8-9, wherein the mixing cup assembly (200) is assembled to the top of the main unit (100).

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