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 cutter component detachably mounted in the stirring cup and a driving device for driving the cutter component, and the cutter component comprises a cutter holder, a driven magnetic disk, a bearing, a transmission shaft, an upper blade and a lower blade. The lower end of the transmission shaft is fixed to the driven magnetic disc, the upper end of the transmission shaft penetrates out of the tool apron to be fixed to the lower blade and the upper blade, and the upper blade and the lower blade each comprise a body horizontally extending and connected with the transmission shaft in a sleeved mode and a blade connected to the periphery of the body. The edges of the upper end face and the lower end face of the annular table are provided with an upper annular rib and a lower annular rib respectively, the lower annular rib abuts against a body of the lower blade, and the upper annular rib abuts against a body of the upper blade. By arranging the annular table, accumulation of residues is reduced, cleaning is convenient, the smashing height of the cutter assembly is increased, and the smashing efficiency and the smashing fineness are improved.

Description

Technical Field

[0001] This utility model belongs to the field of kitchen appliance technology, specifically relating to a food processing machine. Background Technology

[0002] Traditional food processors consist of a main unit with a built-in motor and a mixing cup mounted on top of the main unit. The mixing cup contains a mixing blade, and the bottom wall of the mixing cup has perforations for the blade shaft to be connected to the motor shaft for transmission. The mixing blade cannot be removed from the mixing cup, the mixing cup has a complex sealing process, and it is difficult to clean.

[0003] Another type of blade assembly uses magnetic drive. A driven disk is installed in the blade holder of the assembly, and the main unit's drive disk drives the driven disk to rotate. The driven disk then drives the drive shaft and blades to rotate, achieving pulverization. This type of food processor eliminates the need for perforation of the mixing cup bottom wall, provides good sealing, and allows for easy disassembly and cleaning of the blade assembly. However, with this magnetically driven blade assembly, the drive shaft and blade holder rotate relative to each other. This means that when the user removes the blade assembly for cleaning, if they grasp the upper end of the drive shaft to rinse the blades, the weight of the driven disk on the blade holder causes the entire blade holder to rotate, making the operation difficult. Therefore, users usually grasp the blade holder and rinse the drive shaft and blades directly.

[0004] However, existing blade assemblies have two sets of blades to achieve rapid crushing. A large dirt-trapping groove is formed between the two adjacent sets of blades and the drive shaft. Material residue accumulates in the groove and adheres to the outer wall of the drive shaft. When the user holds the blade holder to rinse the blades, the drive shaft rotates, making it difficult to achieve all-round rinsing. This also makes it difficult to clean the material residue accumulated between the blades. Cleaning is time-consuming, laborious, and incomplete. Utility Model Content

[0005] This utility model provides a food processing machine based on a magnetically driven detachable blade assembly. When the user washes the blade assembly, it is difficult to clean it from all angles due to the relative rotation of the drive shaft and the blade holder. Furthermore, the dirt-trapping space formed between two adjacent sets of blades and the drive shaft is too large, resulting in time-consuming and laborious cleaning, and making it difficult to clean thoroughly.

[0006] The technical solution adopted in this utility model is as follows:

[0007] This utility model provides a food processing machine, including a mixing cup, a blade assembly detachably installed in the mixing cup, and a driving device for driving the blade assembly. The blade assembly includes a blade holder, a driven disk and a bearing disposed in the blade holder, a drive shaft passing through the bearing, and an upper blade and a lower blade located above the blade holder. The lower end of the drive shaft is fixed to the driven disk, and the upper end extends out of the blade holder and is fixed to the lower blade and the upper blade. The upper blade and the lower blade each include a horizontally extending body that is sleeved with the drive shaft and a blade blade connected to the outer periphery of the body. The drive shaft is also sleeved with an annular platform supported between the upper blade and the lower blade. The annular platform has an upper end face extending outward close to the body of the upper blade and a lower end face extending outward close to the body of the lower blade. Upper and lower ring ribs are respectively provided on the edges of the upper and lower end faces. The lower ring rib abuts against the body of the lower blade, and the upper ring rib abuts against the body of the upper blade.

[0008] The food processing machine provided by this utility model has a drive shaft sleeved with an annular platform supported between the upper and lower blades. The annular platform has an upper end face extending outward from the main body of the upper blade and a lower end face extending outward from the main body of the lower blade. Therefore, the annular platform itself has a certain width to fill the annular groove space formed by the upper blade, lower blade, and drive shaft, thereby reducing the space where residue can accumulate in the annular groove, reducing residue accumulation, and reducing the difficulty for users to clean the space between the upper and lower blades. The annular platform is further enhanced by dividing the edges of the upper and lower end faces... The upper and lower ring ribs are not provided. The lower ring rib abuts against the main body of the lower blade, and the upper ring rib abuts against the main body of the upper blade. Therefore, with the help of the upper and lower ring ribs, the fit between the ring platform and the upper blade is changed from a surface fit to a line fit, and the fit between the ring platform and the lower blade is changed to a line fit. The contact pressure between the ring platform and the upper and lower blades is significantly increased, thereby improving the sealing effect at the fit position and further preventing residue from entering the gap between the upper blade and the ring platform and the lower blade and the ring platform, thereby reducing the accumulation of residue and reducing the difficulty of cleaning.

[0009] In addition, since the ring platform has a certain height and is spaced between the upper and lower blades, it can also achieve axial height misalignment between the upper and lower blades, thereby increasing the crushing height of the blade assembly and increasing the crushing space, so that the material in the mixing cup can be fully and efficiently crushed, improving crushing efficiency and fineness.

[0010] In a preferred embodiment, the blades of both the upper and lower blades are bent, and the lowest point of the blade of the upper blade is higher than the highest point of the blade of the lower blade.

[0011] By bending the blades of both the upper and lower blades, the axial crushing height of each blade is increased. At the same time, the lowest point of the upper blade is higher than the highest point of the lower blade, so that the crushing spaces of the upper and lower blades do not overlap. Generally, the upper and lower blades have inclined cutting surfaces. Therefore, when the drive shaft rotates and drives the blades to rotate, the material can tumble up and down between the crushing spaces of the upper and lower blades under the pushing action of the cutting surfaces, so as to achieve full crushing of the material and improve crushing efficiency.

[0012] In a preferred embodiment, the upper blade includes an upper blade blade that is bent upward relative to the body of the upper blade; or, the lower blade includes a lower blade blade that is bent downward relative to the body of the lower blade.

[0013] By equipping the upper blade with upward-bending blades, the highest crushing position of the upper blade is not affected by the drive shaft, thus increasing the crushing height of the upper blade. By equipping the lower blade with downward-bending blades, the crushing height of the lower blade can be reduced, which also improves the crushing effect on materials that sink to the upper surface of the blade holder, ensuring thorough crushing and improving crushing efficiency.

[0014] In a preferred embodiment, the outer diameter R1 of the ring platform and the outer diameter R2 of the body of the lower blade satisfy: 1 / 2R2≤R1≤R2.

[0015] By satisfying 1 / 2R2≤R1≤R2, the ring platform can occupy half of the main body of the lower blade, which can significantly reduce the residue accumulated on the lower blade, facilitate thorough cleaning, and reduce the difficulty of cleaning.

[0016] In a preferred embodiment, the outer ring of the annular platform is circular, quadrilateral, or hexagonal;

[0017] Whether the outer ring of the grinding wheel is circular, quadrilateral, or hexagonal, it can reduce the accumulation of material between the upper and lower blades. If the outer ring of the grinding wheel is circular, the surface is smooth and it is not easy for material to stick. If a quadrilateral or hexagonal shape is used, the outer ring can be used to push the material outward as the drive shaft rotates, thereby achieving a turbulence effect on the material and improving the crushing effect.

[0018] In a preferred embodiment, both the upper blade and the lower blade are provided with irregularly shaped through holes that mate with the drive shaft, and the ring platform is clamped between the upper blade and the lower blade to rotate with the drive shaft.

[0019] The upper and lower blades are fitted to the drive shaft through irregularly shaped perforations and rotate with the drive shaft to achieve reliable transmission. The ring platform rotates with the drive shaft with the help of the upper and lower blades. Therefore, reducing the accuracy requirements of the fit between the ring platform and the drive shaft can make the installation of the ring platform easier.

[0020] In a preferred embodiment, the outer periphery of the drive shaft is provided with an upper limit portion that abuts against the bearing above and a lower limit portion that abuts against the bearing below. The drive shaft is provided with a support step that supports the lower blade. The support step is higher than the upper surface of the tool holder, so that the body of the upper blade is separated from the tool holder.

[0021] The drive shaft is axially limited by an upper and lower limiting part, thus allowing the root of the lower blade to be separated from the upper wall or upper housing of the tool holder. This further prevents direct wear between the blade and the upper housing, reduces frictional noise, protects the blade and tool holder, and improves the transmission smoothness of the drive shaft. Furthermore, the support steps reduce debris accumulation in the gap between the lower blade and the tool holder, facilitating cleaning and ensuring hygienic use. The lower blade is limited from below by the support steps, employing a simple structure to separate the blade from the tool holder, reducing wear between the blade and the upper housing.

[0022] In a preferred embodiment, the upper end of the drive shaft extends through the upper blade and is connected to a gripper cap. Preferably, the gripper cap is pressed against the body of the upper blade.

[0023] By installing a gripper cap at the upper end of the drive shaft, users can easily pick up and put down the blade assembly, making operation convenient and safe. The gripper cap presses against the upper body of the upper blade, thereby limiting the upper blade's upward movement and limiting the movement of the ring platform and the lower blade, preventing the upper and lower blades from moving upwards and ensuring smooth operation.

[0024] In a preferred embodiment, the lower blade is supported on the upper surface of the blade holder by a wear-resistant pad.

[0025] By setting wear-resistant shims, the gap between the lower blade and the tool holder can be filled. The lower blade and the tool holder can clamp the wear-resistant shims to achieve reliable axial positioning. At the same time, the lower blade rubs against the wear-resistant shims during rotation without directly wearing down the upper surface of the tool holder. It directly abuts against the positioning shims, extending the service life of the lower blade and the tool holder.

[0026] In a preferred embodiment, the driven disk is detachably fixed to the drive shaft by fasteners;

[0027] By detachably fixing the driven disk to the drive shaft with fasteners, the driven disk can be installed either after the drive shaft is engaged with the bearing or before the drive shaft is installed on the bearing. This makes the installation sequence of the driven disk more diverse, allowing assemblers to install it reasonably according to actual needs and improve assembly efficiency. Moreover, if the driven disk's magnetic force weakens due to long-term use, it can be disassembled, remagnetized, or replaced, facilitating subsequent maintenance.

[0028] In a preferred embodiment, the driven disk includes a partition disk integrally connected to the drive shaft and a permanent magnet fixed to the lower surface of the partition disk.

[0029] The driven disk includes a partition disk integrally connected to the drive shaft and a permanent magnet fixed to the lower surface of the partition disk. Compared with the prior art, the structure is simplified. Since the permanent magnet is directly fixed to the lower surface of the partition disk, the lower end face of the permanent magnet is exposed facing the lower housing of the tool holder, reducing the structural obstruction between the permanent magnet and the lower housing. The permanent magnet can be as close to the lower housing as possible, thereby achieving a closer proximity between the permanent magnet and the drive disk in the food processing machine, strengthening the interaction force between the drive disk and the permanent magnet, realizing synchronous rotation of the driven disk and the drive disk, reducing the speed difference between the two, and thus improving the transmission efficiency. 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 a cross-sectional structural diagram of the blade assembly in one embodiment of the present invention;

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

[0034] Figure 4 This is a schematic diagram of the structure of the ring platform in one embodiment of the present invention;

[0035] Figure 5 This is a partial structural diagram of the ring platform in one embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the ring platform in another embodiment of the present invention.

[0037] List of components and reference numerals: 10. Stirring cup; 20. Blade assembly; 30. Main unit; 40. Drive unit; 41. Motor; 42. Drive disk; 21. Blade holder; 211. Upper housing; 212. Lower housing; 221. Upper blade; 222. Lower blade; 223. Main body; 23. Driven disk; 224. Blade blade; 24. Bushing; 25. Bearing; 26. Drive shaft; 261. Upper limit stop; 262. Lower limit stop; 263. Support step; 27. Shaft seal; 28. Ring platform; 281. Upper ring rib; 282. Lower ring rib; 29. ​​Grip cap. 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 1As shown, this utility model provides a food processing machine, including a mixing cup 10, a blade assembly 20 detachably installed in the mixing cup 10, and a driving device 40 for driving the blade assembly 20, as shown. Figure 2 , 3 As shown, the blade assembly 20 includes a blade holder 21, a driven disk 23 and a bearing 25 disposed within the blade holder 21, a shaft seal 27, a drive shaft 26 passing through the bearing 25, and an upper blade 221 and a lower blade 222 located above the blade holder 21. The lower end of the drive shaft 26 is fixed to the driven disk 23, and the upper end extends out of the blade holder 21 and is fixed to the lower blade 222 and the upper blade 221. Both the upper blade 221 and the lower blade 222 include a horizontally extending body 223 sleeved with the drive shaft 26 and a blade blade 224 connected to the outer periphery of the body. The drive shaft 26 is also sleeved with an annular platform 28 supporting the upper blade 221 and the lower blade 222. Figure 4 , 5 As shown, the ring platform 28 has an upper end face extending outward from the main body 223 close to the upper blade 221 and a lower end face extending outward from the main body 223 close to the lower blade 222. An upper ring rib 281 and a lower ring rib 282 are respectively provided on the edges of the upper end face and the lower end face. The lower ring rib 282 abuts against the main body 223 of the lower blade 222, and the upper ring rib 281 abuts against the main body 223 of the upper blade 221.

[0044] The food processing machine provided by this utility model has a drive shaft 26 sleeved with an annular platform 28 supported between the upper blade 221 and the lower blade 222. The annular platform 28 has an upper end face extending outward from the main body 223 of the upper blade 221 and a lower end face extending outward from the main body 223 of the lower blade 222. Therefore, the annular platform 28 itself has a certain width to fill the annular groove space formed by the upper blade 221, the lower blade 222 and the drive shaft 26, thereby reducing the space in the annular groove where residue can accumulate, reducing the accumulation of residue, and reducing the difficulty for users to clean the space between the upper blade 221 and the lower blade 222. Upper annular ribs 281 are respectively provided on the edges of the upper and lower end faces. The lower ring rib 282 abuts against the body 223 of the lower blade 222, and the upper ring rib 281 abuts against the body 223 of the upper blade 221. Therefore, with the help of the upper ring rib 281 and the lower ring rib 282, the fit between the ring platform 28 and the upper blade 221 is changed from a surface fit to a line fit, and the fit between the ring platform 28 and the lower blade 222 is changed to a line fit. The contact pressure between the ring platform 28 and the upper blade 221 and the lower blade 222 is significantly increased, thereby improving the sealing effect of the fit position and further preventing residue from entering the gap between the upper blade 221 and the ring platform 28 and the lower blade 222 and the ring platform 28, thereby reducing the accumulation of residue and reducing the difficulty of cleaning.

[0045] In addition, since the ring platform 28 has a certain height and is spaced between the upper blade 221 and the lower blade 222, it can also achieve axial height misalignment between the upper blade 221 and the lower blade 222, thereby increasing the crushing height of the blade assembly 20 and increasing the crushing space, so that the material in the mixing cup 10 can be fully and efficiently crushed, improving crushing efficiency and fineness.

[0046] 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 40 is installed inside the main unit 30.

[0047] It should be noted that this utility model does not limit the specific structure of the driving device 40. For example, in a preferred embodiment, such as... Figure 1 As shown, the drive device 40 includes a motor 41 and a drive disk 42 driven by the shaft of the motor 41. The drive disk 42 is located below the driven disk 23 and drives the driven disk 23 to rotate remotely.

[0048] Of course, in another preferred embodiment, the driving device 40 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 23 and drives the driven disk 23 to rotate in the air.

[0049] Whether the drive device 40 uses a motor 41 and a drive disk 42 or a stator and coil windings, it can drive the driven disk 23 through changes in the magnetic field, thereby achieving effective rotation of the blade 22 and realizing the crushing and processing of food ingredients.

[0050] In a preferred embodiment, the blades of both the upper blade 221 and the lower blade 222 are bent, and the lowest point of the blade of the upper blade 221 is higher than the highest point of the blade of the lower blade 222.

[0051] By bending the blades of both the upper blade 221 and the lower blade 222, the axial crushing height of each blade is increased. At the same time, the lowest point of the upper blade 221 is higher than the highest point of the lower blade 222, so that the crushing spaces of the upper blade 221 and the lower blade 222 do not overlap. Generally, the upper blade 221 and the lower blade 222 have inclined cutting surfaces. Therefore, when the drive shaft 26 rotates and drives the blades to rotate, the material can tumble up and down between the crushing spaces of the upper blade 221 and the lower blade 222 under the pushing action of the cutting surfaces, so as to achieve full crushing of the material and improve crushing efficiency.

[0052] Of course, the blade of the upper blade 221 can be bent upward or downward, or the lower blade 222 can have alternating upper and lower bent blades along the circumference; similarly, the lower blade 222 can also be bent upward or downward, or the lower blade 222 can have alternating upper and lower bent blades along the circumference.

[0053] To improve the pulverizing effect, in another preferred embodiment, the upper blade 221 includes an upper blade blade that is bent upward relative to the body 223 of the upper blade 221; or, the lower blade 222 includes a lower blade blade that is bent downward relative to the body 223 of the lower blade 222.

[0054] By setting the upper blade 221 to have upward-bent blades, the highest crushing position of the upper blade 221 is not affected by the drive shaft 26, thus increasing the crushing height of the upper blade 221. By setting the lower blade 222 to have downward-bent blades, the crushing height of the lower blade 222 can be reduced, which can also improve the crushing effect on materials that sink to the upper surface of the blade holder 21, making the crushing more thorough and improving the crushing efficiency.

[0055] In a preferred embodiment, the outer diameter R1 of the ring platform 28 and the outer diameter R2 of the body 223 of the lower blade 222 satisfy: 1 / 2R2≤R1≤R2.

[0056] The condition 1 / 2R2≤R1≤R2 is satisfied, so that the ring platform 28 can occupy half of the main body 223 of the lower blade 222, which can significantly reduce the residue accumulated above the lower blade 222, which is conducive to thorough cleaning and reduces the difficulty of cleaning.

[0057] It should be explained that when the outer ring of the ring platform is not circular, the outer diameter R1 of the outer ring of the ring platform 28 mentioned above refers to the outer diameter of the circumscribed circle of the ring platform; when the outer diameter R2 of the body 223 of the lower blade 222 is not circular, R2 refers to the outer diameter of the circumscribed circle of the body. Typically, there is a bend line separating the body and the blade.

[0058] This invention does not limit the shape of the truncated ring, for example... Figure 1-5 As shown, in a preferred embodiment, the outer ring of the annular platform 28 is circular.

[0059] like Figure 6 As shown, in another preferred embodiment, the outer ring of the ring platform 28 is hexagonal; of course, it can also be quadrilateral.

[0060] Whether the outer ring of the ring stage 28 is circular, quadrilateral, or hexagonal, it can reduce material accumulation between the upper blade 221 and the lower blade 222. A circular outer ring of the ring stage 28 provides a smoother surface and reduces material adhesion. Figure 6As shown, the outer ring of the ring platform is quadrilateral or hexagonal. As the drive shaft 26 rotates, the material can be pushed outward by the outer ring, achieving a turbulence effect on the material and improving the crushing effect.

[0061] In a preferred embodiment, both the upper blade 221 and the lower blade 222 are provided with irregularly shaped through holes that cooperate with the drive shaft 26, and the ring platform 28 is clamped between the upper blade 221 and the lower blade 222 to rotate with the drive shaft 26.

[0062] The upper blade 221 and lower blade 222 engage with the drive shaft 26 through irregularly shaped through holes, rotating with the drive shaft 26 to achieve reliable transmission. The ring platform 28 rotates with the drive shaft 26 via the upper and lower blades 221 and 222. Therefore, reducing the required precision of the fit between the ring platform 28 and the drive shaft 26 makes installation of the ring platform 28 easier. Optionally, the ring platform 28 is provided with a circular hole that mates with the drive shaft 26 for easier manufacturing. Furthermore, based on the installation method where the ring platform 28 is clamped between the upper and lower blades 221 and 222, a gap is provided between the circular hole of the ring platform 28 and the drive shaft to achieve effortless installation of the ring platform.

[0063] like Figure 3 As shown, in a preferred embodiment, the outer periphery of the drive shaft 26 is provided with an upper limit portion 261 that abuts against the bearing 25 above and a lower limit portion 262 that abuts against the bearing 25 below. The drive shaft 26 is provided with a support step 263 that supports the lower blade 222. The support step 263 is higher than the upper surface of the tool holder 21, so that the body 223 of the upper blade 221 is separated from the tool holder 21.

[0064] like Figure 3 As shown, the tool holder 21 includes an upper housing 211 and a lower housing 212, and the upper blade 221 is separated from the upper housing 211.

[0065] The drive shaft 26 is axially limited to the bearing 25 by means of the upper limit part 261 and the lower limit part 262. Therefore, the root of the lower blade 222 can be separated from the upper wall or upper housing of the tool holder 21, thereby further avoiding direct wear between the blade and the upper housing, reducing friction noise, protecting the blade and the tool holder 21, and improving the transmission smoothness of the drive shaft 26. Moreover, by setting the support step 263, the gap between the lower blade 222 and the tool holder 21 is reduced, making cleaning easier and ensuring cleanliness and hygiene. The lower blade 222 is limited from below by the support step 263, and the separation of the blade from the tool holder 21 is achieved with a simple structure, reducing wear between the blade and the upper housing.

[0066] like Figure 2 , 3As shown, in a preferred embodiment, the upper end of the drive shaft 26 extends through the upper blade 221 and is connected to a gripper cap 29. Preferably, the gripper cap 29 is pressed against the body 223 of the upper blade 221.

[0067] By providing a gripper cap 29 at the upper end of the drive shaft 26, the user can easily pick up and put down the knife assembly 20, making operation convenient and safe. The gripper cap presses against the body 223 of the upper blade 221, thereby limiting the upper blade 221 from above, and consequently limiting the ring platform 28 and the lower blade 222, preventing the upper blade 221 and the lower blade 222 from moving upwards, ensuring smooth operation.

[0068] In a preferred embodiment, the lower blade 222 is supported on the upper surface of the tool holder 21 by a wear-resistant pad. In this embodiment, the upper limit section on the drive shaft can be omitted, and the upper limit section can be formed directly by the lower blade to achieve axial limiting between the drive shaft and the tool holder.

[0069] By setting wear-resistant shims, the gap between the lower blade 222 and the tool holder 21 can be filled. The lower blade 222 and the tool holder 21 can clamp the wear-resistant shims to achieve reliable axial positioning. At the same time, the lower blade 222 rubs against the wear-resistant shims during rotation without directly wearing down the upper surface of the tool holder 21. It directly abuts against the positioning shims, extending the service life of the lower blade 222 and the tool holder 21.

[0070] This utility model does not limit the method of fixing the driven disk and the drive shaft. In a preferred embodiment, the driven disk 23 and the drive shaft 26 are detachably fixedly connected by fasteners.

[0071] By detachably fixing the driven disk 23 to the drive shaft 26 with fasteners, the driven disk 23 can be installed either after the drive shaft 26 is engaged with the bearing 25 or before the drive shaft 26 is installed on the bearing 25. This makes the installation sequence of the driven disk 23 more diverse, allowing the assembler to install it reasonably according to actual needs and improve assembly efficiency. Moreover, if the driven disk 23 experiences magnetic weakening due to prolonged use, it can be disassembled, remagnetized, or replaced, facilitating subsequent maintenance.

[0072] In another preferred embodiment, the driven disk 23 includes a partition disk integrally connected to the drive shaft 26 and a permanent magnet fixed to the lower surface of the partition disk.

[0073] The driven disk 23 includes a partition disk integrally connected to the drive shaft 26 and a permanent magnet fixed on the lower surface of the partition disk. Compared with the prior art, the structure is simplified. Since the permanent magnet is directly fixed on the lower surface of the partition disk, the lower end face of the permanent magnet is exposed facing the lower housing of the tool holder 21, which reduces the structural obstruction between the permanent magnet and the lower housing. The permanent magnet can be as close to the lower housing as possible, thereby achieving a closer proximity between the permanent magnet and the drive disk 42 in the food processing machine, strengthening the interaction force between the drive disk 42 and the permanent magnet, realizing the synchronous rotation of the driven disk 23 and the drive disk 42, reducing the speed difference between the two, and thus improving the transmission efficiency.

[0074] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0075] 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.

[0076] The above description is merely an embodiment of this utility model and is 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 processor comprising a mixing bowl, a blade assembly removably mounted within the mixing bowl, drive means for driving the blade assembly, characterised in that, The knife assembly comprises a knife seat, a driven magnetic disc and a bearing arranged in the knife seat, a transmission shaft sleeved on the bearing, an upper blade and a lower blade arranged above the knife seat, the lower end of the transmission shaft is fixed with the driven magnetic disc, the upper end of the transmission shaft passes through the knife seat and is fixed with the lower blade and the upper blade, the upper blade and the lower blade each comprise a main body extending horizontally and sleeved with the transmission shaft and a blade leaf connected to the outer periphery of the main body, the transmission shaft is further sleeved with a ring table supported between the upper blade and the lower blade, the ring table has an upper end face extending outward close to the main body of the upper blade and a lower end face extending outward close to the main body of the lower blade, an upper ring rib is arranged on the edge of the upper end face and a lower ring rib is arranged on the edge of the lower end face, the lower ring rib abuts against the main body of the lower blade, and the upper ring rib abuts against the main body of the upper blade.

2. A food processor as claimed in claim 1, characterised in that The blade leaf of the upper blade and the blade leaf of the lower blade are arranged in a bent manner, and the lowest point of the blade leaf of the upper blade is higher than the highest point of the blade leaf of the lower blade.

3. A food processor as claimed in claim 1, wherein The blade leaf of the upper blade comprises an upper blade leaf bent upward relative to the main body of the upper blade. Alternatively, the blade leaf of the lower blade comprises a lower blade leaf bent downward relative to the main body of the lower blade.

4. The food processor of claim 1, wherein, The outer diameter R1 of the outer ring of the ring table and the outer diameter R2 of the main body of the lower blade satisfy 1 / 2R2≤R1≤R2.

5. The food processor of claim 1, wherein, The outer ring of the ring table is circular, quadrilateral or hexagonal. Alternatively, the upper blade and the lower blade are each provided with a special-shaped through hole matched with the transmission shaft, and the ring table is clamped between the upper blade and the lower blade to rotate with the transmission shaft.

6. The food processor of claim 1, wherein, The outer periphery of the transmission shaft is convexly provided with an upper limiting portion abutting above the bearing and a lower limiting portion abutting below the bearing, the transmission shaft is provided with a support step supporting the lower blade, and the support step is higher than the upper surface of the knife seat, so that the main body of the upper blade is separated from the knife seat.

7. The food processor of claim 1, wherein, The upper end of the transmission shaft passes through the upper blade and is connected with a handle cap.

8. A food processor as claimed in claim 7, characterised in that The handle cap is crimped above the main body of the upper blade.

9. The food processor of claim 1, wherein, The lower blade is supported on the upper surface of the knife seat by a wear-resistant gasket.

10. The food processor of claim 1, wherein, The driven magnetic disc and the transmission shaft are detachably fixedly connected by a fastener. Alternatively, the driven magnetic disc comprises a magnetic separation disc integrally connected with the transmission shaft and a permanent magnet fixed on the lower surface of the magnetic separation disc.

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