Food processor

Abstract

The utility model belongs to the technical field of kitchen appliances, and particularly discloses a food processor which comprises a main machine, the main machine comprises a machine shell, a rotary knob assembly and a control device, a mounting groove is formed in the side wall of the machine shell, and the rotary knob assembly comprises a cylindrical base and a rotary outer shell rotationally arranged on the periphery of the base in a sleeving mode. At least part of the base is fixedly inserted into the mounting groove and matched with the mounting groove in a sealed mode, a matching seam is formed between the rotary shell and the machine shell, a water retaining rib extending outwards in the radial direction of the base is arranged at the outer end, located outside the mounting groove, of the base, and a water guiding groove extending around the peripheral wall of the base is formed between the water retaining rib and a groove opening of the mounting groove. And the gutter is positioned below the matching seam. According to the utility model, the knob assembly adopts a matching structure of the base and the rotary shell and is provided with the water retaining rib, so that the problem that water enters the knob assembly and the shell is synchronously solved, the waterproof effect of the host is improved, additional sealing elements are omitted, the structure is simple, the cost is low, and the sealing is durable and reliable.

Description

Technical Field

[0001] The utility model belongs to the technical field of kitchen appliances, and particularly relates to a food processing machine. Background Art

[0002] Existing cooking appliances include a housing and a control switch. The housing is provided with a perforation, and the control switch is at least partially installed in the perforation. The user performs cooking operations on the cooking appliance by operating the control switch, while the electrical control part of the cooking appliance is usually located inside the housing. Due to the assembly requirements of the perforation and the control switch, a gap is formed between the perforation and the control switch. When the user cooks ingredients or washes, moisture can easily enter the housing through this gap, affecting the control switch itself or other components in the cooking appliance, thereby shortening the service life.

[0003] The applicant's prior patent application, CN205885244U, discloses a cooking appliance that incorporates retaining ribs on the sidewalls of a control switch. The retaining ribs are positioned close to the sidewalls of the switch housing, and a sealing ring is provided on the switch housing to seal the gap between the switch and the control switch. This solution primarily addresses water ingress into the control switch through the retaining ribs and the outer casing through the sealing ring.

[0004] However, since the sealing ring is sealed in the gap between the control switch and the housing, the user needs to press or rotate the control switch during operation, which causes the control switch to wear the sealing ring, causing the sealing ring to shift relative to the housing or deteriorate in elasticity, resulting in poor sealing durability, seal failure, and water entering the housing. Utility Model Content

[0005] The utility model provides a food processing machine, which achieves waterproofing of the knob assembly and the casing synchronously through a simple mechanical structure, thereby solving the problems in the prior art of requiring the sealing ring and the retaining rib to be combined, resulting in a complex structure, and the movement of the knob assembly causing wear on the sealing ring, resulting in poor sealing durability and sealing failure.

[0006] The technical solution adopted by the present invention is as follows: the present invention provides a food processing machine, comprising a main machine, the main machine comprising a casing, a knob assembly mounted on the side wall of the casing and a control device arranged in the casing, the side wall of the casing being provided with a mounting groove for mounting the knob assembly, the knob assembly comprising a cylindrical base and a rotating shell rotatably sleeved on the outer periphery of the base, the base being at least partially fixedly inserted into the mounting groove and sealingly fitted with the mounting groove, a fitting seam being formed between the rotating shell and the casing, the outer end of the base being located outside the mounting groove being provided with a water retaining rib extending radially outwardly along the base, a water diversion groove extending around the outer peripheral wall of the base being formed between the water retaining rib and the notch of the mounting groove, the water diversion groove being located below the fitting seam.

[0007] In the food processing machine provided by the present invention, the knob assembly includes two parts: a base and a rotating shell. The base is fixed to the casing as an immovable component, and the rotating shell and the base rotate in coordination to realize the host control. Specifically, the base is at least partially fixedly inserted into the installation slot and sealed with the installation slot, thereby effectively improving the waterproofness of the shell at the installation slot position. The sealing effect between the base and the installation slot as an immovable component is long-lasting and reliable, effectively preventing water from entering the casing; a mating seam is formed between the rotating shell and the casing, thereby avoiding rotational interference, realizing smooth operation of the user, and having a good operating feel. If water flows into the fitting seam, the water will not enter the interior of the housing due to the sealing between the base and the mounting groove. At the same time, a water retaining rib extending radially outward along the base is provided at the outer end of the base outside the mounting groove. A water diversion groove extending around the outer peripheral wall of the base is formed between the water retaining rib and the notch of the mounting groove. The water diversion groove is located below the fitting seam. Therefore, the water retaining rib blocks the water from flowing through the sleeve gap between the base and the rotating housing and entering the interior of the rotating housing. The water flow blocked by the water retaining rib can be discharged in the water diversion groove along the circumferential surface of the base, preventing water accumulation, thereby further preventing water from entering the interior of the knob assembly. Therefore, the present invention adopts the fitting structure of the base and the rotating housing in the knob assembly, and at the same time provides a water retaining rib on the base, thereby simultaneously solving the problem of water entering the interior of the knob assembly and the interior of the housing, improving the waterproof effect of the host, and at the same time, eliminating the need for additional sealing components, having a simple structure, low cost, and a durable and reliable seal.

[0008] In a preferred embodiment, the notch of the installation groove is provided with an outwardly extending extension rib, and the extension rib is laterally shielded below the fitting seam, so that the water diversion groove and the fitting seam are laterally staggered.

[0009] By providing an outwardly extending extension rib at the notch of the mounting groove, the extension rib is used to block the bottom of the fitting seam. Therefore, the water flowing down from the fitting seam must bypass the extension rib, making it more difficult to enter the gap between the base and the mounting groove. The extension rib makes the water diversion groove and the fitting seam laterally staggered, and the water flow path entering the interior of the casing is tortuous, which increases the difficulty of water flowing into the interior of the casing and further improves the waterproof effect of the casing.

[0010] In a preferred embodiment, the side wall of the casing is further provided with a recessed groove, and the casing wall of the rotating shell is plugged into and fitted with the recessed groove, so that the fitting seam is bent.

[0011] By setting a recessed groove on the side wall of the casing, the shell wall of the rotating shell is plugged into the recessed groove, so that the fitting seam is bent, the water inlet path is extended, and the difficulty of water flowing down the fitting seam is increased, thereby further improving the waterproof effect of the casing and the knob assembly.

[0012] In a preferred embodiment, an inner end panel is provided at the inner end of the base, and the inner end panel abuts against the bottom wall of the installation slot.

[0013] An inner end panel is provided at the inner end of the base, and the inner end panel abuts against the bottom wall of the mounting groove, thereby increasing the contact area, thereby increasing the sealing area, and sealing comprehensively, thereby improving the sealing between the inner end of the base and the mounting groove, and preventing water from entering the casing.

[0014] In a preferred embodiment, a sealing ring is provided between the base and the groove wall of the installation groove.

[0015] By adding a sealing ring, the sealing effect between the base and the groove wall of the installation groove can be further improved. Since the base and the groove bottom wall of the installation groove are fixedly connected, there will be no problem of wear and displacement of the sealing ring, and the sealing is durable and reliable.

[0016] In a preferred embodiment, the protrusion height H of the water retaining rib satisfies 0.5 mm ≤ H ≤ 2 mm.

[0017] By setting the raised height of the water retaining rib between 0.5mm and 2mm, the problem of poor water retention, which may occur when the water retaining rib is less than 0.5mm, and the inability to reliably block a large amount of water flowing down the fitting gap, is avoided. The problem of the knob assembly's overall radial dimension being too large, resulting in inconvenient and laborious user rotation, which may occur when the water retaining rib is greater than 2mm is also avoided. Therefore, satisfying the requirement of 0.5mm ≤ H ≤ 2mm allows the knob assembly to be compact and structurally reliable while achieving good water retention and improving the waterproofness of the housing and knob assembly.

[0018] In a preferred embodiment, there is an avoidance gap between the radial outer end of the water retaining rib and the rotating shell, and the avoidance gap S1 satisfies 0.2 mm ≤ S1 ≤ 1 mm.

[0019] By setting an avoidance gap between the water retaining rib and the rotating shell, the avoidance gap satisfies 0.2mm≤S1≤1mm, which can avoid the problem of water and dust entering the knob assembly due to the avoidance gap being too large, and can also avoid the phenomenon of rotation jamming when the rotating shell is slightly tilted due to the avoidance gap being too small. Therefore, satisfying 0.2mm≤S1≤1mm can achieve reliable waterproof and dustproof effects while improving the rotation smoothness of the rotating shell, and also make the knob assembly compact in structure, small in size, and easy to operate.

[0020] In a preferred embodiment, the base includes a main body sealed and sunk in the mounting groove and a mounting column protruding outward from the main body, the water retaining rib is integrally arranged on the outer periphery of the main body, a circuit board is installed in the main body, an encoder is installed on the outer periphery of the mounting column, the rotating shell rotates around the encoder to trigger the sensing structure on the encoder, the encoder is connected to the circuit board, and the circuit board is connected to the control device.

[0021] By setting the base as a main body and a mounting column, the main body is sealed and fixed with the mounting groove, and the encoder is installed using the mounting column, the user can trigger the sensing structure on the encoder by twisting and rotating the housing to achieve gear adjustment.

[0022] More preferably, a safety switch is provided on the circuit board, and the knob assembly further comprises a bracket movably mounted on the mounting column and a screen fixed to the outer end of the bracket, the rotating housing is located on the outer periphery of the bracket, and pressing the screen causes the bracket to move axially relative to the base to trigger the safety switch.

[0023] By setting up the screen and the bracket, the screen moves relative to the base through the bracket, and the user can press to operate. The bracket realizes reliable fixation of the screen, and the bracket triggers the safety switch to realize the switch control of the circuit. The operation is reliable, and the screen can display the switch status and working mode, which is convenient for users to select intuitively, easy to operate, and enhances the sense of luxury and improves the user experience.

[0024] In a preferred embodiment, the side wall of the housing on which the knob assembly is mounted is inclined outward from top to bottom, and the inclination angle α satisfies 0<α≤45°.

[0025] By setting the side wall of the casing on which the knob assembly is installed as an inclined side wall, specifically inclined from top to bottom and outward, when there is water flow above the fitting seam, part of the water flow can flow directly along the inclined side wall and only part of the water flow enters the fitting seam, thereby improving the waterproof effect of the casing and the knob assembly. The inclination angle is set to 0<α≤45° to avoid the formation of a relatively horizontal side wall when the inclination is too large, which is not conducive to the downward flow of water in the water diversion groove. Therefore, satisfying α≤45° can ensure that even water entering the fitting seam can flow along the circumferential surface of the base in the water diversion groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0027] Figure 1This is a schematic diagram of the main structure of a food processing machine in one embodiment of the present invention;

[0028] Figure 2 for Figure 1 A magnified schematic diagram of part A in the middle;

[0029] Figure 3 This is a structural diagram of a knob assembly in one embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the exploded structure of the knob assembly in one embodiment of the present invention;

[0031] Figure 5 This is a schematic cross-sectional view of a knob assembly in one embodiment of the present invention.

[0032] Explanation of the accompanying reference numerals: 10. Main unit; 11. Casing; 111. Side wall; 12. Mounting groove; 121. Extension rib; 13. Recessed groove; 20. Knob assembly; 21. Base; 210. Inner end panel; 212. Main body; 213. Mounting column; 211. Water retaining rib; 214. Circuit board; 215. Encoder; 216. Safety switch; 217. Bracket; 218. Screen; 22. Rotating housing; 30. Water diversion channel; 40. Control device. DETAILED DESCRIPTION

[0033] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0034] The following description sets forth many specific details to facilitate a thorough understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein, and therefore, the scope of protection of the present invention is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present invention and the features of each embodiment may be combined with each other unless there is a conflict.

[0035] In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0037] In the present invention, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0038] like Figure 1-5 As shown, the utility model provides a food processing machine in one embodiment, including a main body 10, the main body 10 includes a casing 11, a knob assembly 20 installed on the side wall of the casing 11 and a control device 40 arranged in the casing 11, the side wall of the casing 11 is provided with a mounting groove 12 for installing the knob assembly 20, the knob assembly 20 includes a cylindrical base 21 and a rotating shell 22 rotatably mounted on the outer periphery of the base 21, the base 21 is at least partially fixedly inserted into the mounting groove 12 and sealed with the mounting groove 12, a fitting gap S0 is formed between the rotating shell 22 and the casing 11, the outer end of the base 21 outside the mounting groove 12 is provided with a water retaining rib 211 extending radially outward along the base 21, a water diversion groove 30 extending around the outer peripheral wall of the base 21 is formed between the water retaining rib 211 and the notch of the mounting groove 12, and the water diversion groove 30 is located below the fitting gap S0.

[0039] In the food processing machine provided by the present invention, the knob assembly 20 includes two parts: a base 21 and a rotating shell 22. The base 21 is fixed to the casing 11 as an immovable component, and the rotating shell 22 rotates in coordination with the base 21 to realize the control of the main unit 10. Specifically, the base 21 is at least partially fixedly inserted into the mounting groove 12 and sealed with the mounting groove 12, thereby effectively improving the waterproofness of the shell at the mounting groove 12 position. The sealing effect between the base 21 as an immovable component and the mounting groove 12 is long-lasting and reliable, effectively preventing water from entering the casing 11; a mating gap S0 is formed between the rotating shell 22 and the casing 11, thereby avoiding rotational interference, realizing smooth operation of the user, and having a good operating feel. If water flows into the fitting seam, the water will not enter the interior of the shell due to the sealing between the base 21 and the mounting groove 12. At the same time, a water retaining rib 211 extending radially outward along the base 21 is provided at the outer end of the base 21 outside the mounting groove 12. A water diversion groove 30 extending around the outer peripheral wall of the base 21 is formed between the water retaining rib 211 and the notch of the mounting groove 12. The water diversion groove 30 is located below the fitting seam. Therefore, the water retaining rib 211 blocks the water from flowing into the interior of the rotating shell 22 through the socket gap between the base 21 and the rotating shell 22. The water flow blocked by the water retaining rib 211 can be discharged in the water diversion groove 30 along the circumferential surface of the base 21. The water flow path is shown in FIG. Figure 2 、 Figure 3 As shown by the dotted arrow in the middle, water accumulation is prevented, thereby further preventing water from entering the knob assembly 20. Therefore, the present invention adopts a matching structure of the base 21 and the rotating housing 22 in the knob assembly 20, and at the same time provides a water retaining rib 211 on the base 21, thereby simultaneously solving the problem of water entering the knob assembly 20 and the housing, improving the waterproof effect of the host 10, and at the same time, eliminating the need for additional sealing components, resulting in a simple structure, low cost, and a long-lasting and reliable seal.

[0040] In a preferred embodiment, Figure 2 As shown, the notch of the installation groove 12 is provided with an outwardly extending extension rib 121 , and the extension rib 121 is laterally shielded below the fitting seam S0 , so that the water diversion groove 30 is laterally staggered with the fitting seam S0 .

[0041] In this embodiment, an outwardly extending extension rib 121 is provided at the notch of the mounting groove 12, and the extension rib 121 is used to block the bottom of the fitting gap. Therefore, the water flowing down from the fitting gap must bypass the extension rib 121, making it more difficult to enter the gap between the base 21 and the mounting groove 12. The extension rib 121 makes the water diversion groove 30 and the fitting gap horizontally offset, and the water flow path entering the interior of the housing 11 is tortuous, which increases the difficulty of water flowing into the interior of the housing 11 and further improves the waterproof effect of the housing 11.

[0042] In a preferred embodiment, Figure 2As shown, a recessed groove 13 is further provided on the side wall of the housing 11 , and the housing wall of the rotating housing 22 is plugged into and fitted with the recessed groove 13 , so that the fitting gap S0 is bent.

[0043] By setting a recessed groove 13 on the side wall of the casing 11, the shell wall of the rotating shell 22 is plugged into the recessed groove 13, so that the fitting seam is bent, the water inlet path is extended, and the difficulty of water flowing down the fitting seam is increased, thereby further improving the waterproof effect of the casing 11 and the knob assembly 20.

[0044] like Figure 2 As shown, in a more preferred embodiment, in addition to providing an extension rib 121 at the notch of the mounting slot, a recessed slot 13 is further provided on the side wall of the housing 11. The wall of the rotating housing 22 engages with the recessed slot 13, causing the mating seam S0 to bend. This arrangement causes the entrance of the mating seam S0 to be laterally offset from the water diversion channel 30, thereby extending the water inlet path, making it more difficult for water to enter, and improving the waterproof effect.

[0045] In a preferred embodiment, Figure 3 As shown, an inner end panel 210 is provided at the inner end of the base 21 , and the inner end panel 210 abuts against the bottom wall of the installation groove 12 .

[0046] An inner end panel is provided at the inner end of the base 21, and the inner end panel abuts against the bottom wall of the mounting groove 12, thereby increasing the contact area, thereby increasing the sealing area, and sealing comprehensively, thereby improving the sealing between the inner end of the base 21 and the mounting groove 12, and preventing water from entering the interior of the casing 11.

[0047] Of course, it should be noted that in addition to using the inner end surface to abut against the bottom wall of the installation groove to achieve sealing between the base and the installation groove, in another preferred embodiment, a sealing ring is provided between the base 21 and the groove wall of the installation groove 12.

[0048] By adding a sealing ring, the sealing effect between the base 21 and the groove wall of the installation groove 12 can be further improved. Since the base 21 and the groove bottom wall of the installation groove 12 are fixedly connected, there will be no problem of wear and displacement of the sealing ring, and the sealing is durable and reliable.

[0049] It is understandable that, on the basis of providing the inner end panel on the base, a sealing ring can be further sandwiched between the base and the side wall of the installation groove to enhance the sealing effect.

[0050] In a preferred embodiment, Figure 4 As shown, the protrusion height H of the water retaining rib 211 satisfies 0.5 mm ≤ H ≤ 2 mm.

[0051] By setting the raised height of the water retaining rib 211 to between 0.5 mm and 2 mm, the problem of poor water retaining effect, which may occur when the raised height of the water retaining rib 211 is less than 0.5 mm, and inability to reliably block a large amount of water flowing down the fitting seam, is avoided. The problem of the overall radial dimension of the knob assembly 20 being too large, which may cause inconvenience and laborious operation for the user, which may occur when the raised height of the water retaining rib 211 is greater than 2 mm, is avoided. Therefore, satisfying the requirement of 0.5 mm ≤ H ≤ 2 mm allows the knob assembly 20 to be compact and structurally reliable while achieving good water retaining effect, thereby improving the waterproofness of the housing 11 and the knob assembly 20.

[0052] In a preferred embodiment, Figure 5 As shown, there is an avoidance gap between the radial outer end of the water retaining rib 211 and the rotating shell 22, and the avoidance gap S satisfies 0.2mm≤S≤1mm.

[0053] By setting an avoidance gap between the water retaining rib 211 and the rotating shell 22, the avoidance gap satisfies 0.2mm≤S≤1mm, which can avoid the problem of water and dust entering the knob assembly 20 due to the avoidance gap being too large, and can also avoid the phenomenon of rotation jamming when the rotating shell 22 is slightly deflected due to the avoidance gap being too small. Therefore, satisfying 0.2mm≤S≤1mm can achieve reliable waterproof and dustproof effects while improving the rotation smoothness of the rotating shell 22, and also make the knob assembly 20 compact in structure, small in size, and easy to operate.

[0054] In a preferred embodiment, Figure 4 、 5 As shown, the base 21 includes a main body 212 sealed and sunk in the mounting groove 12 and a mounting column 213 protruding outward from the main body 212, a water retaining rib 211 is integrally arranged on the periphery of the main body 212, a circuit board 214 is installed in the main body 212, an encoder 215 is installed on the periphery of the mounting column 213, the rotating shell 22 rotates around the encoder 215 to trigger the sensing structure on the encoder 215, the encoder 215 is connected to the circuit board 214, and the circuit board 214 is connected to the control device 40.

[0055] More preferably, a safety switch 216 is provided on the circuit board 214, and the knob assembly 20 also includes a bracket 217 movably mounted on the mounting column 213 and a screen 218 fixed to the outer end of the bracket 217. The rotating shell 22 is located on the outer periphery of the bracket 217, and pressing the screen 218 causes the bracket 217 to move axially relative to the base 21 to trigger the safety switch 216.

[0056] By setting the base 21 as a main body 212 and a mounting column 213, the main body 212 is sealed and fixed to the mounting groove 12, and the encoder 215 is installed using the mounting column 213, the user can trigger the sensing structure on the encoder 215 by twisting the rotating shell 22 to adjust the gear position.

[0057] By setting up the screen 218 and the bracket 217, the screen 218 moves relative to the base 21 through the bracket 217, and the user can perform a pressing operation. The screen 218 is reliably fixed by the bracket 217, and the circuit switch control is realized by triggering the safety switch 216 by the bracket 217. The operation is reliable, and the screen 218 can display the switch status and working mode, which is convenient for users to select intuitively, easy to operate, and enhances the sense of luxury and improves the user experience.

[0058] In a preferred embodiment, the side wall 111 of the housing 11 on which the knob assembly 20 is mounted is inclined outward from top to bottom, and the inclination angle α satisfies 0<α≤45°.

[0059] By configuring the sidewall of the housing 11 on which the knob assembly 20 is mounted as an inclined sidewall, specifically sloping outward from top to bottom, when water flows above the mating gap, a portion of the water can flow directly along the inclined sidewall, while only a portion of the water enters the mating gap, thereby improving the waterproofing of the housing 11 and the knob assembly 20. Setting the inclination angle to 0 < α ≤ 45° prevents excessive inclination from forming a relatively horizontal sidewall, which would hinder the downward flow of water in the water diversion groove 30. Therefore, satisfying α ≤ 45° ensures that even water that enters the mating gap can flow along the circumferential surface of the base 21 and into the water diversion groove 30. Anything not described in this utility model can be achieved by adopting or drawing on existing technologies.

[0060] It should also be noted that the present invention does not limit the specific form of the food processor. For example, the food processor includes a main unit and a mixing cup. A mixing blade is provided in the mixing cup. A motor is also provided inside the main unit. The mixing blade is driven to rotate by the motor. The mixing cup is detachably mounted on the main unit or fixedly mounted on the main unit.

[0061] Alternatively, in another embodiment, the food processor includes a main unit and a blending cup, a blending blade is provided in the blending cup, a motor is fixedly provided at the bottom of the blending cup, the blending cup is detachably mounted on the main unit, and a coupler is provided between the main unit and the blending cup so that the motor located at the bottom of the blending cup is connected to a control device located inside the main unit.

[0062] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0063] The above are merely examples of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of the claims of the present invention.

Claims

1. A food processing machine, comprising a main machine, the main machine comprising a housing, a knob assembly mounted on a side wall of the housing, and a control device disposed in the housing, characterized in that: The side wall of the casing is provided with a mounting groove for installing the knob assembly, and the knob assembly includes a cylindrical base and a rotating shell rotatably mounted on the outer periphery of the base, the base is at least partially fixedly inserted into the mounting groove and sealed with the mounting groove, and a fitting seam is formed between the rotating shell and the casing, and the outer end of the base located outside the mounting groove is provided with a water retaining rib extending radially outward along the base, and a water diversion groove extending around the outer peripheral wall of the base is formed between the water retaining rib and the notch of the mounting groove, and the water diversion groove is located below the fitting seam.

2. A food processing machine according to claim 1, characterized in that: The notch of the installation groove is provided with an outwardly extending extension rib, and the extension rib is laterally blocked below the matching seam, so that the water diversion groove and the matching seam are laterally staggered.

3. A food processing machine according to claim 1, characterized in that: The side wall of the housing is further provided with a recessed groove, and the housing wall of the rotating housing is plugged into and matched with the recessed groove, so that the matching seam is bent.

4. A food processing machine according to claim 1, characterized in that: An inner end panel is provided at the inner end of the base, and the inner end panel abuts against the bottom wall of the installation slot.

5. A food processing machine according to claim 1, characterized in that: A sealing ring is provided between the base and the groove wall of the installation groove.

6. A food processing machine according to claim 1, characterized in that: The raised height H of the water retaining rib satisfies 0.5 mm ≤ H ≤ 2 mm.

7. A food processing machine according to claim 1, characterized in that: An avoidance gap is provided between the radial outer end of the water retaining rib and the rotating shell, and a size S1 of the avoidance gap satisfies 0.2 mm ≤ S1 ≤ 1 mm.

8. A food processing machine according to claim 1, characterized in that: The base includes a main body sealed and sunk in the mounting groove and a mounting column protruding outward from the main body. The water retaining rib is integrally arranged on the outer periphery of the main body. A circuit board is installed in the main body. An encoder is installed on the outer periphery of the mounting column. The rotating shell rotates around the encoder to trigger the sensing structure on the encoder. The encoder is connected to the circuit board, and the circuit board is connected to the control device.

9. A food processing machine according to claim 8, characterized in that: A safety switch is provided on the circuit board, and the knob assembly further includes a bracket movably mounted on the mounting column and a screen fixed to the outer end of the bracket. The rotating housing is located on the outer periphery of the bracket, and pressing the screen causes the bracket to move axially relative to the base to trigger the safety switch.

10. The food processing machine according to claim 1, characterized in that: The side wall of the housing on which the knob assembly is mounted is inclined outward from top to bottom, and an inclination angle α satisfies 0<α≤45°.

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