Food processor

Abstract

The utility model belongs to the technical field of kitchen appliances, and discloses a food processor which comprises a stirring cup, a driving device and a cutter assembly detachably mounted in the stirring cup. A mounting cavity is defined by the upper shell and the lower shell, the blade is located above the upper shell, the shaft sleeve and the driven magnetic disc are located in the mounting cavity, the transmission shaft is rotatably installed on the shaft sleeve, a shaft seal and a bearing located below the shaft seal are arranged on the periphery of the transmission shaft, and the driven magnetic disc is located below the bearing and connected with the lower end of the transmission shaft. The upper end of the transmission shaft penetrates out of the upper shell to be connected with the blade, the shaft sleeve comprises a shaft seal installation section for installing a shaft seal, a bearing installation section for installing a bearing and a main body section surrounding the periphery of the driven magnetic disc, and the lower end of the main body section is provided with a first positioning part which protrudes out of the bottom face of the driven magnetic disc downwards and abuts against the lower shell. And an avoiding gap is formed between the bottom surface of the driven magnetic disk and the lower shell. The size of the avoiding gap can be accurately controlled according to requirements, and the effectiveness and reliability of transmission are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of kitchen appliances, and particularly relates to a food processor. BACKGROUND

[0002] A food processor in the prior art utilizes magnetic force to drive a knife assembly to rotate in the air, so that the knife assembly can be taken out of a stirring cup, and complete cleaning of the knife assembly and good sealing of the stirring cup are realized. The knife assembly comprises: a support seat; a rotating shaft rotatably installed on the support seat, with the upper end of the rotating shaft extending out of the support seat to connect a knife; a driven magnetic disc fixedly connected with the lower end of the rotating shaft; and a shell in the shape of a cylinder with one end closed and the other end open, wherein the support seat closes the shell to form a sealed cavity, the driven magnetic disc is located in the sealed cavity, and the support seat is connected with the shell. The food processor comprises a base, and the base is provided with a driving magnetic disc. The driven magnetic disc can realize forward rotation or reverse rotation relative to the shell under the action of the changing magnetic field of the driving magnetic disc, so as to drive the knife to rotate forward or reversely.

[0003] Therefore, in the assembly of the existing knife assembly, the bearing and the rotating shaft are installed on the support seat, the driven magnetic disc is matched with the support seat along with the rotating shaft, and then the shell is sealed and assembled with the mounting seat. The driven magnetic disc must be prearranged with a clearance between the bottom wall of the shell in order to rotate relative to the shell. Therefore, the existing knife assembly is actually installed with the support seat as the installation reference, the driven magnetic disc is hoisted on the support seat through the rotating shaft, and is suspended relative to the bottom wall of the shell. The clearance between the driven magnetic disc and the bottom wall of the shell is indirectly determined by the cooperation between the shell and the support seat. As a result, the assembly dimension chain between the driven magnetic disc and the bottom wall of the shell is long, and the clearance is affected by the superposition of the height cooperation tolerance between the mounting seat and the rotating shaft and the height cooperation tolerance between the shell and the support seat, so that the clearance cannot be accurately controlled. If the clearance is too small, the driven magnetic disc will interfere with the bottom wall of the shell during rotation, causing rotation jamming. If the clearance is too large, the driven magnetic disc is too far away from the driving magnetic disc, and the driving fails. TECHNICAL SOLUTION

[0004] The utility model provides a kind of food processor, to shaft sleeve integration multiple installation sites and as the unified installation reference of knife assembly, solve the problem that the positioning dimension chain of transmission shaft and driven magnetic disc etc. core accessory is long in the assembly process of the knife assembly of magnetic drive in prior art due to unreasonable installation reference, and the clearance between driven magnetic disc and lower shell cannot be accurately controlled.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] This utility model provides a food processing machine, including a mixing cup, a driving device, and a blade assembly detachably installed in the mixing cup. The blade assembly includes an upper housing and a lower housing that enclose a mounting cavity, a blade located above the upper housing, a bushing and a driven disk located in the mounting cavity, and a drive shaft rotatably installed on the bushing. The drive shaft has a shaft seal and a bearing located below the shaft seal on its outer periphery. The driven disk is located below the bearing and connected to the lower end of the drive shaft. The upper end of the drive shaft extends out of the upper housing and connects to the blade. The bushing includes a shaft seal mounting section for mounting the shaft seal, a bearing mounting section for mounting the bearing, and a main body section surrounding the outer periphery of the driven disk. The lower end of the main body section has a first positioning part that protrudes downward from the bottom surface of the driven disk and abuts against the lower housing, forming a clearance gap between the bottom surface of the driven disk and the lower housing.

[0007] The food processing machine provided by this utility model integrates a shaft seal mounting section, a bearing mounting section, and a main body section surrounding the driven disk in a bushing. This allows for centralized mounting of the drive shaft and driven disk within the bushing. The various components of the blade assembly are assembled using the bushing as a unified positioning reference, improving the installation accuracy of the blade assembly. A first positioning part at the lower end of the main body section abuts against the lower housing, directly determining the clearance between the driven disk and the lower housing. This reduces the axial fit dimension chain of the blade assembly. Compared to traditional blade assembly installation methods, this provides more direct and precise control over the clearance between the lower housing and the bottom surface of the driven disk. The clearance size can be precisely controlled as required, achieving both rotational clearance between the driven disk and the lower housing, ensuring smooth rotation of the driven disk, and reducing the distance between the driven disk and the drive device, such as the drive disk, improving the effectiveness and reliability of the transmission.

[0008] In a preferred embodiment, the bushing further includes a second positioning portion located at the upper end of the shaft seal mounting section, the second positioning portion abutting against the upper housing.

[0009] The bushing abuts against the lower housing and the upper housing respectively through the first positioning part and the second positioning part. Therefore, the upper housing and the lower housing clamp the bushing to achieve axial positioning, which is simple to fix and easy to operate. It eliminates the need for additional fixing parts, simplifies the structure of the tool assembly, and achieves a precise and stable connection between the bushing and the upper and lower housings. This allows for precise control of the clearance and enables effective and reliable rotation of the blade.

[0010] More preferably, the shaft seal is provided with a buffer portion extending to the top surface of the second positioning portion, and the second positioning portion presses the buffer portion against the upper housing.

[0011] By setting a shaft seal, the sealing performance between the drive shaft and the bushing, and between the drive shaft and the upper housing, is improved. At the same time, the shaft seal is equipped with a buffer part, and the second positioning part presses the buffer part against the upper housing, so that the shaft seal can play a sealing role while integrating a buffering role, realizing a flexible connection between the upper housing and the bushing. The buffer part can also absorb the assembly errors caused by the machining errors of the upper housing and the bushing, improving the assembly accuracy of the tool assembly.

[0012] In a preferred embodiment, the inner diameter of the shaft seal mounting section is reduced relative to the inner diameter of the bearing mounting section to form a contraction platform, and the upper end face of the bearing abuts against the contraction platform.

[0013] By forming a shrinking platform between the shaft seal mounting section and the bearing mounting section through inner diameter contraction, the bearing and shaft sleeve are reliably axially limited, and the bearing is easily installed in place, reducing assembly errors and improving assembly accuracy.

[0014] In a preferred embodiment, the outer diameter of the driven disk is larger than that of the bearing, the main body section is expanded outward relative to the bearing mounting section, and a weight-reducing groove is provided on the upper part of the main body section.

[0015] By setting the outer diameter of the driven disk to be larger than that of the bearing, the driven disk can have a sufficient area to sensitively respond to changes in the magnetic field of the drive device and achieve effective transmission. While the main body section is expanded outward, a weight-reducing groove is set on the upper part of the main body section to reduce the overall weight of the bushing and the entire tool assembly, making it more convenient for users to operate.

[0016] In a preferred embodiment, the main body segment expands outward relative to the bearing mounting segment to form a horizontally extending third positioning portion. The upper housing includes a sleeve fitted over the shaft seal mounting segment and the bearing mounting segment, and an upper housing wall extending outward from the bottom of the sleeve. The upper housing wall has a horizontally extending horizontal portion, and the third positioning portion abuts against the horizontal portion.

[0017] By setting a third positioning part, based on the axial clamping and limiting of the bushing by the upper and lower housings using the first and second positioning parts, the third positioning part achieves secondary positioning, realizing a reliable connection and precise fit between the bushing and the upper and lower housings.

[0018] In a preferred embodiment, the lower end of the main body segment is provided with a ring rib, which forms the first positioning part.

[0019] The first positioning part is formed by using circumferential ribs. Therefore, the circumferential ribs along the driven disk can more fully abut against the lower housing for limiting, achieving reliable limiting in all directions, further realizing precise control of the clearance, and realizing effective transmission of the driven disk.

[0020] In a preferred embodiment, the lower end of the main body segment includes a magnetic shielding ring surrounding the outer periphery of the driven disk and a ring rib located on the outer periphery of the magnetic shielding ring. The magnetic shielding ring and the ring rib form a mounting groove for mounting a magnet. The magnetic shielding ring or the ring rib abuts against the lower housing to form the first positioning portion.

[0021] By setting a magnetic shielding ring and a ring rib at the lower end of the main body section of the bushing, and using the magnetic shielding ring and the ring rib to form an installation groove to limit the installation of the magnet, a reliable fixation of the magnet and the bushing is achieved. Moreover, under the isolation effect of the magnetic shielding ring, the magnetic fields between the magnet and the driven disk are isolated from each other and do not interfere with each other, thus realizing reliable transmission of the driven disk. The bushing abuts against the lower housing by using the magnetic shielding ring or the ring rib to achieve the abutment between the bushing and the lower housing. No additional abutment part is required, which simplifies the structure of the bushing. The structure is compact and reasonable, and the clearance between the driven disk and the lower housing can be precisely controlled.

[0022] More preferably, a magnetic attractor is fixed to the outer side of the bottom wall of the stirring cup, and the magnet is attracted to the magnetic attractor. The magnetic attractor can be a magnetic block or an iron block.

[0023] More preferably, the food processing machine further includes a detection device for detecting the position of the magnet, such as a reed switch or a Hall element.

[0024] By installing a magnetic chuck on the outer side of the bottom wall of the mixing cup, the axial positioning between the blade assembly and the mixing cup is achieved through the attraction between the magnetic chuck and the magnet. This prevents severe axial runout of the blade assembly during operation, thus reducing noise and reducing working noise. It also prevents the blade assembly from detaching from the mixing cup and falling during the user's pouring process after processing, thus avoiding impact damage. Therefore, the axial positioning between the blade assembly and the mixing cup is improved, enhancing the user experience.

[0025] In a preferred embodiment, the lower housing has an upwardly extending lower ring wall on its side, and the upper housing has a downwardly extending upper ring wall on its side. The lower ring wall and the upper ring wall are fitted together and fixedly connected.

[0026] By employing an upwardly extending lower ring wall on the side of the lower housing and a downwardly extending upper ring wall on the side of the upper housing, the lower ring wall and the upper ring wall are fitted together and fixedly connected, forming a nested structure instead of abutting fit between the end faces of the upper and lower housings. After the bushing is axially limited to the upper and lower housings and then fixedly connected, the nested structure formed by the upper and lower ring walls offsets the axial fit tolerance between the upper and lower housings, further avoiding the stacking of axial tolerances of the tool assembly.

[0027] In a preferred embodiment, the driving device includes a motor and a drive disk driven by the shaft of the motor, the drive disk driving the driven disk to rotate remotely;

[0028] Alternatively, the driving device is an electromagnetic coil that generates a magnetic field when energized, including a stator and a coil winding wound on the stator, wherein the electromagnetic coil drives the driven disk to rotate in the air.

[0029] Whether the drive device uses a motor and drive disk or a stator and coil windings, it can drive the driven disk through changes in the magnetic field, thereby achieving effective rotation of the blades and realizing the crushing and processing of food ingredients. Attached Figure Description

[0030] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0031] Figure 1 This is a cross-sectional structural diagram of a food processing machine according to one embodiment of the present invention;

[0032] Figure 2 This is an exploded cross-sectional view of the blade assembly in one embodiment of the present invention;

[0033] Figure 3 This is an exploded structural diagram of the blade assembly in one embodiment of the present invention;

[0034] Figure 4 This is a cross-sectional schematic diagram of the blade assembly in one embodiment of the present invention;

[0035] Figure 5 This is a cross-sectional structural diagram of the bushing in one embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the bushing structure in one embodiment of the present invention.

[0037] List of components and reference numerals: 10. Stirring cup; 11. Drive unit; 111. Drive disk; 20. Blade assembly; 21. Upper housing; 211. Upper annular wall; 212. Sleeve; 213. Upper housing wall; 2131. Horizontal section; 22. Lower housing; 221. Lower annular wall; 23. Blade; 24. Bushing; 240. Shaft seal mounting section; 241. Bearing mounting section; 242. Main body section; 2421. Weight reduction groove; 2 43. First positioning part; 244. Second positioning part; 245. Third positioning part; 246. Magnetic isolation ring; 2461. Annular rib; 2462. Metal ring; 2463. Raised rib; 247. Annular rib; 248. Mounting groove; 249. Retractable platform; 25. Driven disk; 26. Drive shaft; 27. Bearing; 28. Shaft seal; 281. Buffer part; 30. Main unit; 40. Motor; 50. Magnet; 60. Magnetic suction component. Detailed Implementation

[0038] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0039] Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other.

[0040] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] like Figure 1 As shown, in one embodiment, this utility model provides a food processing machine, including a mixing cup 10 and a blade assembly 20 detachably installed within the mixing cup 10. Figure 2 , 3 As shown in Figure 4, the blade assembly 20 includes an upper housing 21 and a lower housing 22 that enclose a mounting cavity, a blade 23 located above the upper housing 21, a bushing 24 and a driven disk 25 located in the mounting cavity, and a drive shaft 26 rotatably mounted on the bushing 24. The drive shaft 26 has a shaft seal 28 and a bearing 27 located below the shaft seal 28 on its outer periphery. The driven disk 25 is located below the bearing 27 and connected to the lower end of the drive shaft 26. The upper end of the drive shaft 26 extends out of the upper housing 21 and connects to the blade 23. Figure 5 As shown, the bushing 24 includes a shaft seal mounting section 240 for mounting the shaft seal 28, a bearing mounting section 241 for mounting the bearing 27, and a main body section 242 surrounding the outer periphery of the driven disk 25. The lower end of the main body section 242 is provided with a first positioning part 243 that protrudes downward from the bottom surface of the driven disk 25 and abuts against the lower housing 22, forming a clearance gap between the bottom surface of the driven disk 25 and the lower housing 22.

[0044] like Figure 1 As shown, preferably, the food processor also includes a main unit 30 that supports the mixing cup 10. The mixing cup 10 can be detachably installed on top of the main unit 30 or fixed on top of the main unit 30. The drive device 11 is installed inside the main unit 30.

[0045] The food processing machine provided by this utility model has a bushing 24 that integrates a shaft seal mounting section 240, a bearing mounting section 241, and a main body section 242 surrounding the driven disk 25. This allows the bushing 24 to centrally mount the drive shaft 26 and the driven disk 25. The various components of the blade assembly 20 are assembled using the bushing 24 as a unified positioning reference, thereby improving the installation accuracy of the blade assembly 20. By utilizing the first positioning part 243 at the lower end of the main body section 242 to abut against the lower housing 22, the abutment between the bushing 24 and the lower housing 22 directly determines the clearance size between the driven disk 25 and the lower housing 22. This reduces the axial fit dimension chain of the tool assembly 20. Compared with the traditional installation method of the tool assembly 20, this method allows for more direct and precise control of the clearance formed between the bottom surface of the lower housing 22 and the driven disk 25. The clearance size can be precisely controlled as required, thus achieving rotational clearance between the driven disk 25 and the lower housing 22, enabling smooth rotation of the driven disk 25. It also allows the distance between the driven disk 25 and the drive device 11, such as the drive disk 111, to be shortened, improving the effectiveness and reliability of the transmission.

[0046] It should be noted that this utility model does not limit the specific structure of the driving device 11. For example, in a preferred embodiment, such as... Figure 1 As shown, the drive device 11 includes a motor 40 and a drive disk 111 driven by the shaft of the motor 40. The drive disk 111 is located below the driven disk 25 and drives the driven disk 25 to rotate remotely.

[0047] Of course, in another preferred embodiment, the driving device 11 is an electromagnetic coil that generates a magnetic field after being energized, including a stator and a coil winding wound on the stator. The electromagnetic coil surrounds the outer periphery of the driven disk 25 and drives the driven disk 25 to rotate in the air.

[0048] Whether the drive device 11 uses a motor 40 and a drive disk 111 or a stator and coil windings, it can drive the driven disk 25 by changing the magnetic field, thereby achieving effective rotation of the blade 23 and realizing the crushing and processing of food ingredients.

[0049] like Figure 4 As shown, in a preferred embodiment, the lower housing 22 has an upwardly extending lower ring wall 221 on its side, and the upper housing 21 has a downwardly extending upper ring wall 211 on its side. The lower ring wall 221 and the upper ring wall 211 are fitted together and fixedly connected.

[0050] By employing an upwardly extending lower annular wall 221 on the side of the lower housing 22 and a downwardly extending upper annular wall 211 on the side of the upper housing 21, the lower annular wall 221 and the upper annular wall 211 are fitted together and fixedly connected. The upper annular wall 211 and the lower annular wall 221 form a nested structure instead of abutting the end faces of the upper housing 21 and the lower housing 22. After the bushing 24 is axially limited to the upper housing 21 and the lower housing 22 and then fixedly connected, the nested structure formed by the upper annular wall 211 and the lower annular wall 221 cancels the axial fit tolerance of the upper housing 21 and the lower housing 22, and further avoids the stacking of axial tolerances of the tool assembly 20.

[0051] like Figure 5 As shown, in a preferred embodiment, the bushing 24 further includes a second positioning portion 244 located at the upper end of the shaft seal mounting section 240, the second positioning portion 244 abutting against the upper housing 21. More preferably, combined with Figure 4 The shaft seal 28 is provided with a buffer portion 281 extending to the top surface of the second positioning portion 244, and the second positioning portion 244 presses the buffer portion 281 against the upper housing 21.

[0052] The bushing 24 abuts against the lower housing 22 and the upper housing 21 respectively through the first positioning part 243 and the second positioning part 244. Therefore, the bushing 24 is clamped by the upper housing 21 and the lower housing 22 to achieve axial positioning, which is simple to fix and easy to operate. It eliminates the need for additional fixing parts, simplifies the structure of the tool assembly 20, and achieves a precise and stable connection between the bushing 24 and the upper housing 21 and the lower housing 22, so that the clearance can be precisely controlled and the blade 23 can rotate effectively and reliably.

[0053] By setting the shaft seal 28, the sealing performance between the drive shaft 26 and the bushing 24, and between the drive shaft 26 and the upper housing 21 is improved. At the same time, the shaft seal 28 is provided with a buffer part 281, and the second positioning part 244 presses the buffer part 281 against the upper housing 21, so that the shaft seal 28 can play a sealing role while integrating a buffering role, realizing a flexible connection between the upper housing 21 and the bushing 24. The buffer part 281 can also absorb the assembly error caused by the machining error of the upper housing 21 and the bushing 24, and improve the assembly accuracy of the tool assembly 20.

[0054] like Figure 5 As shown, in a preferred embodiment, the inner diameter of the shaft seal mounting section 240 is reduced relative to the inner diameter of the bearing mounting section 241 to form a contraction platform 249, and the upper end face of the bearing 27 abuts against the contraction platform 249.

[0055] By forming a shrinkage platform 249 between the shaft seal mounting section 240 and the bearing mounting section 241 through inner diameter shrinkage, the bearing 27 and the bushing 24 are reliably axially limited, and the bearing 27 is easily installed in place, reducing assembly errors and improving assembly accuracy.

[0056] In a preferred embodiment, the outer diameter of the driven disk 25 is larger than that of the bearing 27, the main body section 242 is expanded outward relative to the bearing mounting section 241, and a weight-reducing groove 2421 is provided on the upper part of the main body section 242.

[0057] By setting the outer diameter of the driven disk 25 to be larger than that of the bearing 27, the driven disk 25 can have a sufficient area to be sensitive to changes in the magnetic field of the drive device 11 and achieve effective transmission. While the main body section 242 is expanded outward, a weight-reducing groove 2421 is provided on the upper part of the main body section 242 to reduce the overall weight of the bushing 24 and the entire tool assembly 20, making it more convenient for users to operate.

[0058] Combination Figure 4 , 5 As shown, in a preferred embodiment, the main body segment 242 expands outward relative to the bearing mounting segment 241 to form a horizontally extending third positioning portion 245. The upper housing 21 includes a sleeve 212 sleeved around the shaft seal mounting segment 240 and the bearing mounting segment 241, and an upper housing wall 213 extending outward from the bottom of the sleeve 212. The upper housing wall 213 has a horizontally extending horizontal portion 2131, and the third positioning portion 245 abuts against the horizontal portion 2131.

[0059] By setting a third positioning part 245, based on the axial clamping and limiting of the bushing 24 by the upper and lower housings 22 using the first positioning part 243 and the second positioning part 244, the third positioning part 245 achieves secondary positioning, realizing a reliable connection and precise fit between the bushing 24 and the upper housing 21 and the lower housing 22.

[0060] The present invention does not limit the structure of the first positioning part 243. In a preferred embodiment, the lower end of the main body section 242 is provided with a ring rib 247, and the ring rib 247 forms the first positioning part 243.

[0061] The first positioning part 243 is formed by the ring rib 247. Therefore, the ring rib 247 along the circumferential direction of the driven disk 25 can more fully abut against the lower housing 22 for limiting, achieving reliable limiting in all directions, further realizing precise control of the clearance, and realizing effective transmission of the driven disk 25.

[0062] like Figure 6 As shown, in a preferred embodiment, the lower end of the main body segment 242 includes a magnetic shielding ring 246 surrounding the driven disk 25 and a ring rib 247 located around the outer periphery of the magnetic shielding ring 246. The magnetic shielding ring 246 and the ring rib 247 form a mounting groove 248 for mounting the magnet 50. The magnetic shielding ring 246 or the ring rib 247 abuts against the lower housing 22 to form a first positioning portion 243. Specifically, the magnetic shielding ring 246 abuts against the lower housing to form the first positioning portion 243.

[0063] By setting a magnetic shielding ring 246 and a ring rib 247 at the lower end of the main body section 242 of the bushing 24, the magnetic shielding ring 246 and the ring rib 247 form an installation groove 248 to limit the installation of the magnet 50, thereby achieving reliable fixation between the magnet 50 and the bushing 24. Moreover, under the isolation effect of the magnetic shielding ring 246, the magnetic fields between the magnet 50 and the driven disk 25 are isolated from each other and do not interfere with each other, thus achieving reliable transmission of the driven disk 25. The bushing 24 is abutted against the lower housing 22 by the magnetic shielding ring 246 or the ring rib 247, thereby achieving the abutment between the bushing 24 and the lower housing 22. No additional abutment part is required, which simplifies the structure of the bushing 24. The structure is compact and reasonable, and the clearance between the driven disk 25 and the lower housing 22 can be precisely controlled.

[0064] It should be noted that the magnet 50 mentioned above can be used for axial positioning between the blade assembly 20 and the mixing cup 10, and a magnetic suction member 60 is fixed on the outer side of the bottom wall of the mixing cup 10, and the magnet 50 is attracted to the magnetic suction member 60; or, the food processing machine also includes a detection device for detecting the position of the magnet 50, and the magnet 50 is used for position detection of the blade assembly 20.

[0065] The magnetic attractor 60 can be a magnet or an iron block. The detection device may be a reed switch or a Hall element.

[0066] Additionally, it should be noted that the magnetic shielding ring 246 is preferably a metal part to isolate the magnetic field between the magnet 50 and the driven disk 25. The magnetic shielding ring 246 can be integrally formed with the bushing, or, as... Figure 5 , 6 As shown, the magnetic shielding ring 246 includes an annular rib 2461 integrally formed with the bushing and a metal ring 2462 sleeved on the outer periphery of the annular rib. Preferably, a protruding rib 2463 providing friction force is provided on the outer side of the annular rib 2461 to achieve a reliable connection between the annular rib 2461 and the metal ring 2462.

[0067] By setting a magnetic suction component 60 on the outer side of the bottom wall of the mixing cup 10, the axial positioning between the blade assembly 20 and the mixing cup 10 is achieved by the attraction between the magnetic suction component 60 and the magnet 50. This avoids severe axial runout of the blade assembly 20 during operation, which would generate noise and help reduce working noise. At the same time, it also prevents the blade assembly 20 from falling off the mixing cup 10 and causing damage during the user's pouring process after processing. Therefore, the axial positioning between the blade assembly 20 and the mixing cup 10 is improved, enhancing the user experience.

[0068] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0069] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0070] The above are merely embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A food processing machine, comprising a mixing cup, a drive unit, and a blade assembly detachably installed within the mixing cup, characterized in that, The blade assembly includes an upper housing and a lower housing that enclose a mounting cavity, a blade located above the upper housing, a bushing and a driven disk located in the mounting cavity, and a drive shaft rotatably mounted on the bushing. The drive shaft has a shaft seal and a bearing located below the shaft seal on its outer periphery. The driven disk is located below the bearing and connected to the lower end of the drive shaft. The upper end of the drive shaft extends out of the upper housing and connects to the blade. The bushing includes a shaft seal mounting section for mounting the shaft seal, a bearing mounting section for mounting the bearing, and a main body section surrounding the outer periphery of the driven disk. The lower end of the main body section has a first positioning part that protrudes downward from the bottom surface of the driven disk and abuts against the lower housing, forming a clearance gap between the bottom surface of the driven disk and the lower housing.

2. The food processing machine according to claim 1, characterized in that, The bushing also includes a second positioning part located at the upper end of the shaft seal mounting section, the second positioning part abutting against the upper housing.

3. A food processing machine according to claim 2, characterized in that, The shaft seal is provided with a buffer portion extending to the top surface of the second positioning portion, and the second positioning portion presses the buffer portion against the upper housing.

4. A food processing machine according to claim 1, characterized in that, The inner diameter of the shaft seal mounting section is reduced relative to the inner diameter of the bearing mounting section to form a contraction platform, and the upper end face of the bearing abuts against the contraction platform.

5. A food processing machine according to claim 1, characterized in that, The outer diameter of the driven disk is larger than that of the bearing, the main body section is expanded outward relative to the bearing mounting section, and a weight-reducing groove is provided on the upper part of the main body section.

6. A food processing machine according to claim 1, characterized in that, The main body section expands outward relative to the bearing mounting section to form a horizontally extending third positioning part. The upper housing includes a sleeve fitted around the shaft seal mounting section and the bearing mounting section and an upper housing wall extending outward from the bottom of the sleeve. The upper housing wall has a horizontally extending horizontal part, and the third positioning part abuts against the horizontal part.

7. A food processing machine according to claim 1, characterized in that, The lower end of the main body section is provided with a ring rib, which forms the first positioning part.

8. A food processing machine according to claim 1, characterized in that, The lower end of the main body section includes a magnetic shielding ring surrounding the outer periphery of the driven disk and a ring rib located on the outer periphery of the magnetic shielding ring. The magnetic shielding ring and the ring rib form a mounting groove for mounting a magnet. The magnetic shielding ring or the ring rib abuts against the lower housing to form the first positioning part.

9. A food processing machine according to claim 1, characterized in that, The lower housing has an upwardly extending lower ring wall on its side, and the upper housing has a downwardly extending upper ring wall on its side. The lower ring wall and the upper ring wall are fitted together and fixedly connected.

10. A food processing machine according to claim 1, characterized in that, The driving device includes a motor and a driving disk driven by the shaft of the motor, the driving disk driving the driven disk to rotate remotely; Alternatively, the driving device is an electromagnetic coil that generates a magnetic field when energized, including a stator and a coil winding wound on the stator, wherein the electromagnetic coil drives the driven disk to rotate in the air.

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