Cup body assembly for food processor

Abstract

The utility model discloses a cup body assembly for a food processor, and relates to the field of life electric appliances, the cup body assembly comprises a cup body and a stirring cutter arranged in the cup body, the stirring cutter comprises a cutter shaft, the inner bottom surface of the cup body is provided with a mounting groove, the mounting groove is in insertion fit with the bottom of the cutter shaft, the mounting groove radially limits the bottom of the cutter shaft, and the stability of the position of the stirring cutter is ensured; the radial stress upper limit of the whole stirring cutter can be greatly improved by means of limiting of the bottom of the cutter shaft and the mounting groove, a first magnetic attraction piece is arranged at the bottom of the cutter shaft, the cup body is provided with a second magnetic attraction piece matched with the first magnetic attraction piece in a magnetic attraction mode, and the outer diameter D of the first magnetic attraction piece and the height L1 of the cutter shaft meet the condition that L1 / D is larger than or equal to 1.3 and smaller than or equal to 6.5. The problem that the stirring knife is prone to inclining and clamping stagnation and even slipping out of the mounting groove in the initial starting stage is effectively solved, proper friction force is formed between the stirring knife and the mounting groove, it can be guaranteed that the stirring knife and the mounting groove are stably adsorbed and not separated, and a user can conveniently take the stirring knife.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, specifically to a cup assembly for a food processing machine. Background Technology

[0002] Existing food processing machines, such as meat grinders and dough mixers, typically include a cup body with a built-in mixing blade and a detachable main unit located above the cup body. The main unit contains a motor that is connected to the mixing blade. When using the food processing machine, the user places the ingredients into the cup body, and the mixing blade rotates at high speed under the drive of the motor to process the ingredients. Existing methods for positioning the mixing blade typically involve the top of the blade shaft passing through a through-hole in the cup lid and engaging with an upper connector connected to the motor to achieve top positioning. Simultaneously, a limiting groove extending upwards and opening at the bottom of the blade shaft is provided, and a limiting post extending upwards and inserting into the limiting groove is provided on the bottom wall of the cup body to limit the bottom of the mixing blade. This top and bottom positioning achieves overall blade positioning. However, the limiting grooves at the bottom of the blade shaft or on the bottom wall of the cup body are usually quite deep. Furthermore, to allow for ample grinding space within the cup body, and considering the cost and weight of the blade shaft, its diameter cannot be very wide. This results in a relatively narrow diameter of the limiting groove within the blade shaft, approximately 5mm to 8mm. Consequently, the limiting groove is not only deep but also shallow. During food processing, some food slurry or other liquids may enter the limiting groove, making it difficult for users to clean thoroughly. Long-term inadequate cleaning can lead to odors and even mold growth inside the limiting groove, rendering it unusable. Furthermore, after the user finishes processing the ingredients, the mixing blade needs to stop rotating as soon as possible to prevent it from continuing to rotate and cutting the user after the main unit is separated from the cup. To achieve this, an additional anti-rotation structure is usually required. Existing methods typically include an anti-rotation rib on the cup lid, such as patent CN115212980B; or a spring, such as patent CN215353807U. When the main unit is lifted, the blade shaft springs upward via the spring, colliding with the cup lid and thus stopping the rotation. Both of these methods achieve rapid stopping of the mixing blade by increasing mechanical collision, which can cause wear and tear. Moreover, complex structural modifications to the blade shaft and cup lid are required to achieve this anti-rotation effect.

[0003] To address the difficulty in cleaning the blade shaft, existing technology incorporates a limiting groove on the cup body, with a limiting post at the bottom of the blade shaft that mates with the limiting groove. However, this solution is challenging to prevent rotation, and simply moving the limiting groove from inside the blade shaft to the bottom of the cup body introduces the problem of cleaning the limiting groove at the bottom of the cup. Therefore, to ensure the ease of cleaning both the mixing blade and the cup body, some manufacturers set a larger radial dimension for the limiting groove, making it easier for users to clean.

[0004] To address the issue of complex anti-rotation structures for the mixing blades, Chinese utility model patent CN209808086U discloses a food chopper. Its blade assembly includes a magnetic guide component. The bottom of the cup body is equipped with a magnetic cup shaft that generates a magnetic attraction force on the magnetic guide component within the blade assembly, causing the blade shaft to quickly stop rotating within a preset time when the head assembly is removed. The blade assembly is detachably mounted on the magnetic cup shaft. A magnetic force generating device creates a magnetic attraction force on the cup shaft, made of ferromagnetic material. This magnetic attraction force holds the blade shaft in place on the cup shaft, and when the head assembly is removed, the magnetic attraction force quickly stops the blade shaft's rotation, meeting safety regulations. However, in actual use, users cannot guarantee the uniformity of the ingredients added to the cup, especially when adding dough or meat. Most of the ingredients may be concentrated on one side of the mixing blade, resulting in one side of the blade being heavier than the other. This leads to uneven force on the mixing blade at the beginning of operation, requiring a large force to be applied during the initial mixing. At the same time, the mixing blade is also subjected to a large radial force, causing the mixing blade to tilt. This causes the blade shaft to wobble when rotating, and may even cause the blade shaft to slip off the limiting groove, thus preventing the mixing blade from continuing to process the ingredients and seriously affecting the user experience. Utility Model Content

[0005] The purpose of this utility model is to provide a cup assembly for a food processing machine, which further solves the problem that the stirring blade is prone to tilting, jamming, or even slipping out of the limiting groove in the initial stage of operation when the blade shaft of the stirring blade of the food processing machine is inserted and matched with the limiting groove of the cup body.

[0006] To achieve the above objectives, this utility model provides a cup assembly for a food processing machine, including a cup body and a stirring blade disposed within the cup body. The stirring blade includes a blade shaft. The bottom surface of the cup body is provided with a mounting groove, which is inserted into and engaged with the bottom of the blade shaft. The bottom of the blade shaft is provided with a first magnetic attracting element, and the cup body is provided with a second magnetic attracting element that magnetically engages with the first magnetic attracting element. The outer diameter D of the first magnetic attracting element and the height L1 of the blade shaft satisfy the following condition: 2.5≤L1 / D≤11.3.

[0007] Preferably, the height L1 of the cutter shaft is between 40mm and 170mm, and the outer diameter D of the first magnetic attractor is between 10mm and 30mm.

[0008] Preferably, one of the first and second magnetic attracting components is a magnetic metal component, and the other is a magnet. The magnet has a magnetic flux φ between 36πμWb and 315πμWb, and the magnetic metal component has an area S of 19πmm². 2 Up to 225πmm 2 Magnetic metal parts between them.

[0009] Preferably, both the first magnetic attractor and the second magnetic attractor are magnets. The first magnetic attractor is a magnet with a magnetic flux φ1 between 9πμWb and 421πμWb, and the second magnetic attractor is a magnet with a magnetic flux φ2 between 9πμWb and 315πμWb.

[0010] Preferably, the stirring blade further includes a blade, and the blade shaft includes a blade shaft body for fixing the blade. The blade shaft body has a hollow cavity with an opening at the bottom end. The stirring blade also includes a fitting installed at the opening of the hollow cavity, and a first magnetic member is installed on the fitting.

[0011] Preferably, the fitting is fully submerged in the opening of the hollow cavity, and the cutter shaft body is inserted into the mounting groove.

[0012] Preferably, the fitting includes a first shaft segment inserted into the opening of the hollow cavity, and a second shaft segment located below the first shaft segment and radially expanding, the second shaft segment and the bottom end of the cutter shaft body engaging with the mounting groove; or,

[0013] The fitting includes a first shaft segment inserted into the opening of the hollow cavity, and a second shaft segment located below the first shaft segment and radially enlarging, wherein the outer diameter of the second shaft segment is larger than the outer diameter of the cutter shaft body to limit it against the inner wall of the mounting groove.

[0014] Preferably, the first magnetic suction member is arranged to bulge outward and radially expand relative to the bottom of the cutter shaft, so that the first magnetic suction member is limited to the inner sidewall of the mounting groove.

[0015] Preferably, the bottom of the cutter shaft is inserted into the mounting groove, and the outer diameter of the first magnetic attractor is smaller than the outer diameter of the bottom of the cutter shaft, so that the cutter shaft is limited to the inner sidewall of the mounting groove.

[0016] Preferably, the magnet is a magnet with a radius R1 between 6 mm and 12 mm, and the magnetic metal part is a magnetic metal part with a radius R2 between 8 mm and 20 mm; or

[0017] The magnet is a magnet with a radius R1 between 14mm and 20mm, and the magnetic metal part is a magnetic metal part with a radius R2 between 14mm and 16mm.

[0018] Preferably, the first magnetic element is a first magnetic element with a radius R1 between 8 mm and 14 mm, and the second magnetic element is a second magnetic element with a radius R1 between 6 mm and 20 mm; or,

[0019] The first magnetic component is a magnetic component with a radius R1 between 16 mm and 20 mm, and the second magnetic component is a magnetic component with a radius R1 between 8 mm and 18 mm.

[0020] Preferably, the mixing blade also includes a blade mounted on the blade shaft. The blade includes a cutting edge for food processing and a blunt edge connecting the cutting edge and the blade shaft. The maximum outer diameter of the blunt edge along the rotation center of the blade is not less than the outer diameter of the mounting groove.

[0021] Preferably, the maximum outer diameter R3 of the blunt end and the radius R4 of the mounting groove satisfy the following condition: 1.5≤R3 / R4≤3.

[0022] Preferably, the stirring blade also includes a blade mounted on the blade shaft, and the distance L2 between the end of the blade and the inner wall of the cup and the height L3 of the blade shaft inserted into the mounting groove satisfy: 0.01≤L3 / L2≤1.5.

[0023] The technical solution of this application also has the following beneficial effects:

[0024] 1. This application incorporates a mounting groove on the bottom surface of the cup body, which engages with the bottom of the blade shaft. This allows the mounting groove to radially limit the position of the blade shaft after installation, ensuring stability. Simultaneously, a first magnetic element is located at the bottom of the blade shaft, and a second magnetic element engages with it on the cup body. This magnetic engagement further enhances the limiting effect, ensuring the stability of the fit between the blade and the mounting groove. Furthermore, the larger radial fit between the blade shaft and the mounting groove facilitates cleaning of the mounting groove, preventing issues such as residual food residue causing odors or mold growth and improving the user experience.

[0025] Generally, those skilled in the art would readily recognize that the magnetic attraction between the first and second magnetic components is the core factor affecting the stability of the stirring blade. However, during the research process, the applicant discovered that the outer diameter of the first magnetic component directly affects the outer diameter of the blade shaft, and consequently indirectly affects the size of the mounting groove. Since the mounting groove needs to be inserted and fitted with the blade shaft of the stirring blade, the height of the blade shaft, given a fixed mounting groove depth, affects the selection of the outer diameter of the mounting groove. Therefore, the applicant further discovered that there is an inherent and close correlation between the seemingly unrelated outer diameter D of the first magnetic component and the height L1 of the blade shaft regarding the stability of the insertion between the blade shaft and the mounting groove.

[0026] Specifically, the applicant further discovered that when L1 / D is limited to between 2.5 and 11.3, that is, when the specific structural relationship between the stirring blade shaft and the first magnetic component is defined, the problem of the stirring blade easily tilting and getting stuck or even slipping out of the mounting slot can be effectively solved while ensuring the manufacturability of the blade shaft. This allows the stirring blade and the mounting slot to have a suitable frictional force, which can not only ensure that the stirring blade is stably attached to the mounting slot and does not detach, but also make it convenient for the user to take it out.

[0027] The applicant discovered that when the L1 / D value is less than 2.5, although the adhesion between the blade shaft and the mounting groove is more stable, the friction between them increases. For the blade shaft to start smoothly, the motor needs to be matched with a large load, shortening its lifespan and causing harsh friction noise, affecting the user experience. Since the material added by the user is not evenly distributed on the blades, some material will fall off the blades when the blade shaft overcomes friction. Because the force applied to the blade shaft is very large, it will bounce relative to the mounting groove. After falling back into the mounting groove, the blade shaft may not run smoothly and may rub against the side wall of the mounting groove, or cause material to enter and become stuck due to an imbalance in the gap between the mounting groove and the blade shaft. Furthermore, even if the blade shaft successfully rotates after overcoming friction, friction and heat will still be generated between the blade shaft and the mounting groove, posing a potential risk to the quality of the food.

[0028] When the L1 / D value is greater than 11.3, the center of gravity of the entire mixing blade will increase, which will greatly reduce the stability between the mixing blade and the mounting groove, and the cost of the mixing blade will also increase.

[0029] 2. This application, under the premise that L1 and D satisfy 2.5≤L1 / D≤11.3, further limits the L1 value to between 40mm and 170mm and the D value to between 10mm and 30mm, further optimizing the adsorption stability of the blade shaft and the mounting groove during the initial start-up. Generally, when the L1 value is small, a blending cup is typically used to prepare complementary foods, with a required processing volume between 20ml and 80ml. If the L1 value is less than 40mm, the blending cup capacity will be insufficient to meet the complementary food requirements; if the L1 value is greater than 170mm, due to the higher center of gravity, a larger D value is needed to meet the adsorption stability of the blade shaft and mounting groove, resulting in an excessively thick blade shaft that occupies the effective grinding space of the blending cup. Furthermore, as the D value increases, the mounting groove also increases, making the gap between the blade shaft and the mounting groove more easily exposed within the food feeding range. Soft foods are more likely to get stuck in this gap, affecting the rotation of the blending blade. Furthermore, most meat grinders currently available have a capacity of no more than 5L, which is sufficient for a 170mm blade shaft. A higher blade shaft would cause excessive protrusion from the food processor's lid, affecting the stability of the fit between the main unit and the top of the blade shaft, and indirectly impacting the adhesion stability between the bottom of the blade shaft and the mounting slot. If the diameter (D) is less than 10mm, the size of the mounting slot is reduced, making it difficult for users to insert a cloth for cleaning, and it's also prone to problems if the blade shaft is too high. If the D value is greater than 30mm, while it improves the adhesion stability between the blade shaft and the mounting slot, it increases the friction between them, requiring greater driving force, and also exposes the gap between the blade shaft and the mounting slot within the food feeding area. Generally, the blade shaft is made of plastic, and the mounting slot is made of glass. The high friction between them causes wear and tear, resulting in powder contamination of the food inside the mixing cup.

[0030] 3. By setting one of the first magnetic attractor and the second magnetic attractor as a magnetic metal part and the other as a magnet, and ensuring that the magnetic flux φ of the magnet and the area S1 of the magnetic metal part meet the above-mentioned ranges, φ is avoided to be less than 36πμWb and S1 is avoided to be less than 9πmm. 2 At that time, the magnetic attraction force of the first and second magnetic components was too weak, resulting in a weak attraction to the tool shaft. This caused uneven force distribution on the tool shaft during rotation, especially during the initial startup, leading to wobbling. Simultaneously, φ should not exceed 315πμWb, and S1 should not exceed 225πmm. 2 At times, excessive magnetic attraction between the first and second magnetic components leads to high friction in the initial startup of the stirring blade, requiring a large load to start, which could easily damage the motor. This also avoids situations where excessive magnetic attraction makes it difficult for the user to remove the stirring blade from the cup, posing a risk of scratching the user. Furthermore, it avoids situations where 36πμWb≤φ≤315πμWb and S1 is less than 9πmm. 2 At that time, although the magnetic attraction force of the first and second magnetic components met the requirements, the small size of the magnetic metal components made manufacturing difficult. Furthermore, during cup production, it was challenging to precisely position and fix the magnetic metal components, resulting in misalignment between the magnetic metal components and the magnet after installation. This led to poor alignment between the cutter shaft and the mounting groove, causing unstable rotation of the cutter shaft due to misalignment. Simultaneously, it was necessary to avoid situations where 315πμWb < φ, 9πmm 2 ≤S1≤225πmm 2 At that time, although the area S1 of the metal part was selected within a reasonable range, the cost of the magnet increased due to the excessive φ. However, the actual increase in the magnetic attraction between the two was not significant, and there was a situation where the magnetic attraction was too large, so it was not considered.

[0031] 4. In a preferred embodiment, both the first and second magnetic attractors can be magnets, allowing opposite magnets to attract each other. Furthermore, the applicant discovered that when the magnetic flux φ1 of the first magnetic attractor satisfies: 9πμWb≤φ1≤421πμWb, and the magnetic flux φ2 of the second magnetic attractor satisfies: 9πμWb≤φ2≤315πμWb, a good adsorption effect between the cutter shaft and the mounting slot is ensured, while also facilitating the removal of the cutter shaft from the mounting slot. When φ1 is less than 9πμWb or φ2 is less than 9πμWb, the magnetic attraction between the two magnets is weak, easily causing the cutter shaft to tilt during material feeding, affecting stable start-up of the cutter shaft rotation. When 9πμWb≤φ1≤421πμWb and φ2>315πμWb, compared to when φ2 is 315πμWb, the magnetic attraction decreases, and situations of either too weak or too strong magnetic attraction have already occurred. Similarly, when 9πμWb≤φ2≤315πμWb and φ1>421πμWb, the magnetic attraction forces of both decrease, and the magnetic attraction forces are either too small or too large.

[0032] 5. By providing a hollow cavity with an opening at the bottom of the cutter shaft body, demolding of the cutter shaft body is facilitated, which helps to reduce the overall weight of the cutter shaft body, making its rotation easier. This also reduces the weight of the entire machine, making it easier for users to handle and place the machine. Furthermore, it reduces the amount of material needed for demolding the cutter shaft body, thereby lowering production costs. Additionally, it allows for uniform wall thickness molding of the cutter shaft body, ensuring stability during rotation and preventing slow cooling after injection molding, which could reduce production efficiency if the entire cutter shaft body were solid. The stirrer also includes a fitting installed at the opening of the hollow cavity. This fitting can be used alone or in conjunction with other components to seal the hollow cavity, ensuring its airtightness and preventing food slurry or other liquids from entering the hollow cavity during food processing, which could lead to food residue, unpleasant odors, or even mold growth. Meanwhile, the first magnetic suction component is installed on the fitting component to fix the first magnetic suction component, ensuring the stability of the position of the first magnetic suction component. This prevents the first magnetic suction component from shifting after the food processor has been used for a long time, which would cause the magnetic attraction between the first and second magnetic suction components to deteriorate, resulting in a weakening of the limiting effect of the first and second magnetic suction components on the stirring blade, and thus leading to poor stability during the rotation of the stirring blade. This helps to further improve the stability of the stirring blade rotation.

[0033] 6. By making the outer diameter of the first magnetic suction component smaller than the outer diameter of the bottom of the cutter shaft, the cutter shaft is limited to the inner wall of the mounting groove, thus isolating the side wall of the first magnetic suction component from the inner wall of the mounting groove. This protects the first magnetic suction component and effectively prevents it from contacting the inner wall of the mounting groove and being subjected to the radial force of the inner wall of the mounting groove, which would cause it to shift laterally. This would result in a decrease in the magnetic attraction effect of the first and second magnetic suction components, leading to a reduction in their magnetic attraction force and a poorer limiting effect on the stirring blade. This helps to further improve the limiting effect on the stirring blade.

[0034] 7. This application also found that when the materials of the first and second magnetic attractors are different, their radii also affect the adsorption stability between the cutter shaft and the mounting groove. In the first case, when one of the first and second magnetic attractors is a magnetic metal component and the other is a magnet, the radii R1 of the magnet and the radius R2 of the magnetic metal component should satisfy: 6mm≤R1≤12mm, 8mm≤R2≤20mm; or, 14mm≤R1≤20mm, 14mm≤R2≤16mm. If R1 is less than 6mm, the magnet size is too small, making it difficult to manufacture and install; if R1 is greater than 12mm but R2 is less than 14mm, the magnetic attraction between them is too weak; if 6mm≤R1≤12mm but R2 is less than 8mm, the magnetic attraction between them is still too weak, and the metal component is not conducive to manufacturing and installation.

[0035] In the second scenario, when both the first and second magnetic components are magnets, the radii R1 and R2 of the first and second magnetic components must satisfy the following conditions: 8mm ≤ R1 ≤ 14mm, 6mm ≤ R2 ≤ 20mm; or 16mm ≤ R1 ≤ 20mm, 8mm ≤ R2 ≤ 18mm. If R1 is less than 8mm or R2 is less than 6mm, the magnets are difficult to manufacture and install, and the magnetic attraction between them is insufficient to stably hold the blade shaft and mounting slot. If R2 is greater than 20mm or R1 is greater than 20mm, the mounting slot and blade shaft become too large, easily exposing the gap between them within the feeding area, causing material jamming. This increases the cost of the stirring blade and reduces the usable space in the stirring cup. If R2 is 6mm and R1 is between 16mm and 20mm, the magnetic attraction between them is still insufficient.

[0036] 8. By designing the blade to include a cutting edge for food processing and a blunt edge connecting the cutting edge and the blade shaft, the mixing blade rotates after the user places food in the cup, effectively cutting the food through the cutting edge. After processing, the user can easily detach the mixing blade by holding the blunt edge, making operation more convenient and quick. The blunt edge also facilitates cleaning, enhancing the user experience. Furthermore, the maximum outer diameter of the blunt edge along the blade's rotation center is not less than the outer diameter of the mounting groove, ensuring the blunt edge covers the mounting groove. This isolates the food from the mounting groove during processing, preventing food from being squeezed into the gap between the mounting groove and the blade shaft, which would increase friction and cause the mixing blade to rotate unevenly. It also prevents food from entering the mounting groove, making it difficult to clean.

[0037] 9. By setting the distance L2 between the blade tip and the inner wall of the cup and the height L3 of the blade shaft inserted into the mounting groove to satisfy: 0.01≤L3 / L2≤1.5, we can avoid the situation where the distance between the blade tip and the inner wall of the cup is too small relative to the height of the blade shaft inserted into the mounting groove. This would cause the food to get stuck between the blade and the inner wall of the cup during food processing, especially when processing dough, resulting in the blade bearing a large force and the food being unable to move further downward for further processing. This would also cause the mixing blade to bear a large lateral force and wobble. At the same time, we can also avoid the situation where the distance between the blade tip and the inner wall of the cup is too large relative to the height of the blade shaft inserted into the mounting groove, resulting in too much food between the blade and the inner wall of the cup that cannot be effectively cut, thus deteriorating the food processing effect.

[0038] 10. By providing a vertically extending receiving groove on the bottom surface of the cup body, and inserting the second magnetic component into the receiving groove, the second magnetic component is limited and fixed. At the same time, the second magnetic component can be installed and fixed by simple plugging, which is simple and reliable to assemble and helps to improve assembly efficiency. Attached Figure Description

[0039] 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:

[0040] Figure 1 This is a cross-sectional view of the food processing machine in Embodiment 1 of this utility model;

[0041] Figure 2 for Figure 1 Enlarged view of section A;

[0042] Figure 3 This is a cross-sectional view of the food processing machine in Embodiment 2 of this utility model;

[0043] Figure 4 for Figure 3 Enlarged view of section B;

[0044] Figure 5 This is an exploded view of the cup body and other components in Embodiment 2 of this utility model;

[0045] Figure 6 This is a cross-sectional view of the food processing machine in Embodiment 1 of Embodiment 6 of this utility model;

[0046] Figure 7 for Figure 6 Enlarged view of section C;

[0047] Figure 8 This is a schematic diagram of the structure of the second magnetic suction component when it is separated from the cup body in Embodiment 1 of Embodiment 6 of this utility model;

[0048] Figure 9 This is a schematic diagram of the structure when the second magnetic element is connected to the cup body in Embodiment 6 of this utility model;

[0049] Figure 10 This is a cross-sectional view of the cup body and other components in Embodiment 2 of Embodiment 6 of this utility model;

[0050] Figure 11 This is a cross-sectional view of the stirring blade and other components in Embodiment 3 of Embodiment 6 of this utility model;

[0051] Figure 12 This is a cross-sectional view of the cup body and other components in Embodiment 3 of Embodiment 6 of this utility model;

[0052] Figure 13 This is a cross-sectional view of the cup body and other components in one embodiment of the present invention;

[0053] Figure 14 This is a cross-sectional view of the cup body and other components from another angle in one embodiment of this utility model;

[0054] Figure 15 This is a graph showing the variation of the magnetic attraction force of the first and second magnetic attractors as a function of radius in one embodiment of the present invention, where both the first and second magnetic attractors are magnets.

[0055] List of components and reference numerals:

[0056] 1-Main unit; 2-Motor; 3-Cup body; 31-Mounting groove; 32-Rib; 33-Receiving groove; 34-Mounting part; 4-Stirring blade; 41-Blade shaft; 411-Hollow cavity; 42-Blade; 421-Blunt end; 422-Cutting edge; 43-Connecting ring; 5-Isolation component; 51-Base plate; 52-Positioning ring; 53-Positioning post; 54-Fixing groove; 55-Separating rib; 56-Stud; 6-First magnetic suction component; 7-Second magnetic suction component; 71-Horizontal plate; 72-Plug-in ring; 8-Matching component; 81-Positioning ring; 82-Base plate; 83-First shaft section; 84-Second shaft section; 841-Step part; 8411-Step surface; 85-Arc surface. Detailed Implementation

[0057] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0058] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0059] Furthermore, it should be understood in the description of this application 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, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0060] In this application, unless otherwise expressly 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 application according to the specific circumstances.

[0061] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an 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 application. 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 can be combined in any suitable manner in one or more embodiments or examples.

[0062] like Figures 1 to 14 As shown, this utility model provides a cup assembly for a food processing machine, including a cup body 3 and a stirring blade 4 disposed within the cup body 3. The stirring blade 4 includes a blade shaft 41. The bottom surface of the cup body 3 is provided with a mounting groove 31, which is inserted into the bottom of the blade shaft 41. The bottom of the blade shaft 41 is provided with a first magnetic attracting element 6, and the cup body 3 is provided with a second magnetic attracting element 7 that magnetically attracts the first magnetic attracting element 6. The outer diameter D of the first magnetic attracting element and the height L1 of the blade shaft satisfy: 1.3≤L1 / D≤6.5. More preferably, the first magnetic attracting element 6 is at least partially recessed into the mounting groove 31, which helps to improve the reliability of fixing the first magnetic attracting element 6.

[0063] This application incorporates a mounting groove 31 on the bottom inner surface of the cup body 3, which engages with the bottom of the blade shaft 41. This allows the user to install the stirring blade 4, and the mounting groove 31 provides radial restraint to the bottom of the blade shaft 41, ensuring the stability of the stirring blade 4's position. The restraint between the bottom of the blade shaft 41 and the mounting groove 31 significantly increases the upper limit of radial force on the entire stirring blade 4, preventing it from wobbling or even detaching from the mounting groove 31 when subjected to uneven radial force, especially during the initial stages of food processing. This ensures the stability of food processing. Simultaneously, the bottom of the blade shaft 41 is equipped with a first magnetic element 6, and the cup body 3 has a second magnetic element 7 that magnetically engages with the first magnetic element 6. This allows the blade shaft 41 to be restrained not only by the mounting groove 31 but also by the magnetic engagement of the first and second magnetic elements 7, further ensuring the stability of the stirring blade 4's position. In addition, the large radial fit between the cutter shaft 41 and the mounting slot 31 makes it easier for users to clean the mounting slot 31, avoiding the situation where the mounting slot 31 is difficult to clean, which may cause residual food inside to produce odors or even mold, thus improving the user experience.

[0064] Generally, those skilled in the art would readily recognize that the magnetic attraction between the first magnetic element 6 and the second magnetic element 7 is the core factor affecting the stability of the stirring blade 4. However, during the research process, the applicant discovered that the outer diameter of the first magnetic element 6 directly affects the outer diameter of the blade shaft 41, and consequently indirectly affects the size of the mounting groove 31. Since the mounting groove 31 needs to be inserted and fitted with the blade shaft 41 of the stirring blade 4, that is, given a certain depth of the mounting groove 31, the height of the blade shaft 41 will affect the selection of the outer diameter of the mounting groove 31. Therefore, the applicant further discovered that there is an inherent and close correlation between the seemingly unrelated outer diameter D of the first magnetic element 6 and the height L1 of the blade shaft 41 on the stability of the insertion between the blade shaft 41 and the mounting groove 31.

[0065] Specifically, the applicant further discovered that L1 / D should be limited to between 2.5 and 11.3 so that the blade shaft 41 is both manufacturable and can stably adhere to the mounting groove 31 without detaching when the user adds ingredients. In addition, the friction between the blade 4 and the mounting groove 31 is small in the early stage of operation, so as to avoid the blade 4 being easily tilted, stuck or even slipping out of the mounting groove 31 due to uneven force in the early stage of operation.

[0066] The applicant found that when the L1 / D value is less than 2.5, a common situation is that L1 remains unchanged but the D value increases. This increases the outer diameter of the cutter shaft 41. While this makes the adhesion between the cutter shaft 41 and the mounting groove 31 more stable, it also increases the friction between them. For the cutter shaft 41 to start smoothly, the motor needs a large load, shortening its lifespan and causing harsh friction noise, affecting the user experience. Since the material added by the user is not evenly distributed on the blades of the mixing blade 4, some material will fall off the blades when the cutter shaft 41 overcomes friction. The force applied to the cutter shaft 41 is very large, causing it to bounce relative to the mounting groove 31. After falling back into the mounting groove 31, the cutter shaft 41 may not run smoothly and may rub against the side wall of the mounting groove 31, or cause material to enter and become stuck due to misalignment between the mounting groove 31 and the cutter shaft 41. In addition, even if the blade shaft 41 overcomes the friction and successfully rotates, friction will still generate heat between the blade shaft 41 and the mounting groove 31, which poses a potential risk to the quality of the food.

[0067] When the L1 / D value is greater than 11.3, the common situation is that the D value remains unchanged, the depth of the mounting groove 31 remains unchanged, but the L1 value increases. As the L1 value increases, the center of gravity of the entire stirring blade 4 will increase accordingly, which will greatly reduce the stability between the stirring blade 4 and the mounting groove 31, and the cost of the stirring blade 4 will also increase accordingly.

[0068] Specifically, the applicant conducted multiple tests on the outer diameter D of the cutter shaft 41 inserted into the mounting slot 31 and the height L1 of the cutter shaft 41, and obtained the relationship between the two as shown in Table 1. Here, ABC indicates that D and L1 have corresponding beneficial effects within this range, while abcdef indicates that D and L1 have corresponding adverse effects within this range. The specific effects are shown in Table 2. When considering only improving the stability of the cutter shaft 41, the applicant determined that 10mm≤D≤50mm and 40mm≤L1≤170mm. However, if the outer diameter of the first magnetic component 6 is too large, it will lead to increased cost and more adverse effects. Therefore, under the premise of ensuring stable placement of the cutter shaft, the applicant set the outer diameter of the first magnetic component 6 to 10mm≤D≤30mm, thus obtaining the proprietary protection of 1.3≤L1 / D≤6.5. It should be noted that the slash markings are not actually used in manufacturing and lack manufacturability and applicability.

[0069]

[0070] Table 1

[0071] A The cutter shaft is placed stably. B There is little or no material residue between the insertion part of the cutter shaft and the mounting groove. C The mixing blade has low manufacturing cost. a The cutter shaft is prone to tipping. b Material residue is easily left between the insertion part of the cutter shaft and the mounting groove. c High manufacturing cost of mixing blades d Wear on the insert of the cutter shaft produces powder that contaminates the food. e The friction between the insert of the cutter shaft and the cup body generates a lot of noise. f The mounting slot is difficult to clean.

[0072] Table 2

[0073] Furthermore, such as Figure 1 As shown, 40mm≤L1≤170mm, 10mm≤D≤30mm, that is: the height L1 of the cutter shaft is between 40mm and 170mm, and the outer diameter D of the first magnetic attraction component is between 10mm and 30mm.

[0074] This application, under the premise that L1 and D satisfy 2.5≤L1 / D≤11.3, further limits the L1 value to between 40mm and 170mm and the D value to between 10mm and 30mm, further optimizing the adsorption stability of the blade shaft 41 and the mounting groove 31 in the initial stage of startup. Generally speaking, when the L1 value is small, a mixing cup is usually used to make complementary food, and the required processing volume of complementary food is between 20ml and 80ml. If the L1 value is less than 40mm, the capacity of the mixing cup will be insufficient to meet the needs of complementary food; if the L1 value is greater than 170mm, due to the higher center of gravity, a larger D value is required to meet the adsorption stability of the blade shaft 41 and the mounting groove 31, which will result in the blade shaft 41 being too thick and occupying the effective crushing space of the mixing cup. Moreover, as the D value increases, the mounting groove 31 also increases, and the gap between the blade shaft 41 and the mounting groove 31 is more easily exposed within the feeding range of the food. Soft food is easily stuck in the aforementioned gap, affecting the rotation of the mixing blade 4. Furthermore, the maximum capacity of most food processors currently available does not exceed 5L, and a 170mm blade shaft 41 is sufficient. A higher blade shaft would cause the portion of the blade shaft 41 to extend excessively beyond the food processor's lid, affecting the stability of the fit between the main unit and the top of the blade shaft 41, and indirectly impacting the adhesion stability between the bottom of the blade shaft 41 and the mounting groove 31. If the D value is less than 10mm, the size of the mounting groove 31 is reduced, making it difficult for users to insert a cloth for cleaning, and if the blade shaft 41 is too high, it can easily become too tight. If the D value is greater than 30mm, while it improves the adhesion stability between the blade shaft 41 and the mounting groove 31, it increases the friction between them, requiring greater driving force, and also exposes the gap between the blade shaft 41 and the mounting groove 31 within the food feeding area. Generally, the blade shaft 41 is made of plastic, and the mounting groove 31 is made of glass. The high friction between them causes wear and tear, resulting in powder contamination of the food inside the mixing cup.

[0075] The applicant conducted multiple sets of tests on the first magnetic chuck 6 and the second magnetic chuck 7 under different embodiments, and recorded the test data in Table 3. Table 3 corresponds to the data on the changes in magnetic attraction force of the two components with the magnetic flux φ of the magnet and the area S1 of the magnetic metal component when the second magnetic chuck 7 is a magnetic metal component and the first magnetic chuck 6 is a magnet in this embodiment. According to multiple tests, it was found that the magnetic attraction force of the first magnetic chuck 6 and the second magnetic chuck 7 is greater than 3N to effectively limit the cutter shaft 41, so as to avoid the cutter shaft 41 from being subjected to a large radial force, which would cause uneven force distribution and result in swaying or even disengagement from the mounting groove 31. From the data in the table, it can be concluded that...

[0076] The magnetic flux φ of the magnet satisfies: 36πμWb≤φ≤315πμWb, and the area S1 of the magnetic metal part satisfies: 9mm²π≤S1≤225πmm. 2That is, the magnet is a magnet with a magnetic flux φ between 36πμWb and 315πμWb, and the magnetic metal part has an area S of 19πmm². 2 Up to 225πmm 2 The magnetic metal parts between them. It should be noted that although other numerical ranges in the table meet the magnetic attraction requirements, they are insufficient, so some ranges have been discarded. For example, when S1 is 4π and φ≥81πμWb, the magnetic attraction force of the first magnetic part 6 and the second magnetic part 7 is also greater than 3N, but because the area of ​​the magnetic metal parts is too small, it is very inconvenient to install and produce, so it is discarded; another example is when φ≥400πμWb, the magnetic attraction force of the first magnetic part 6 and the second magnetic part 7 is also greater than 3N, but because for magnets of the same area, higher magnetic strength means higher cost, while the increase in magnetic attraction force is not significant, it is discarded; yet another example is S1≥289πmm 2 At that time, the magnetic attraction force of the first magnetic attraction component 6 and the second magnetic attraction component 7 is also greater than 3N. However, due to the large area of ​​the magnetic metal component, the contact area between the blade shaft 41 and the mounting groove is large, resulting in a large friction force in the initial stage of the stirring blade. A large load is required to start the blade, which may lead to damage to the motor. Therefore, this method was discarded.

[0077] By setting one of the first magnetic attractor 6 and the second magnetic attractor 7 as a magnetic metal part and the other as a magnet, and ensuring that the magnetic flux φ of the magnet and the area S1 of the magnetic metal part meet the above-mentioned ranges, we avoid φ being less than 36πμWb and S1 being less than 9πmm. 2 At that time, the magnetic attraction force of the first magnetic attractor 6 and the second magnetic attractor 7 is too small, resulting in a weak attraction to the cutter shaft 41. This leads to uneven force distribution on the cutter shaft 41 during rotation, especially during the initial startup, causing it to wobble. Simultaneously, avoid φ exceeding 315πμWb and S1 exceeding 225πmm. 2 At the same time, excessive magnetic attraction between the first magnetic component 6 and the second magnetic component 7 results in high friction during the initial startup of the stirring blade, requiring a large load to start, which could easily damage the motor. This also avoids the situation where excessive magnetic attraction makes it inconvenient for the user to remove the stirring blade from the cup, posing a risk of scratching the user. Furthermore, it avoids situations where 36πμWb≤φ≤315πμWb and S1 is less than 9πmm. 2 At that time, although the magnetic attraction force of the first magnetic component 6 and the second magnetic component 7 met the requirements, the small size of the magnetic metal components made manufacturing difficult. Furthermore, during cup production, it was challenging to precisely position and fix the magnetic metal components, resulting in misalignment between the magnetic metal components and the magnet after installation. This led to poor alignment between the cutter shaft 41 and the mounting groove, causing the cutter shaft 41 to rotate unstably due to misalignment. Simultaneously, it was necessary to avoid situations where 315πμWb < φ, 9πmm 2 ≤S1≤225πmm 2At that time, although the area S1 of the metal part was selected within a reasonable range, the cost of the magnet increased due to the excessive φ. However, the actual increase in the magnetic attraction between the two was not significant, and there was a situation where the magnetic attraction was too large, so it was not considered.

[0078] Furthermore, although the magnetic attraction force of the two magnetic components within the aforementioned range is greater than 3N, which can stably limit the movement of the blade shaft 41, in actual use, if the magnetic attraction force of the two magnetic components is too large, it will be difficult for the stirring blade 4 to be detached from the cup body 3. The user needs to apply a large force to detach the stirring blade 4. Through experimental analysis, when the magnetic attraction force is below 7N, the user can easily detach the stirring blade 4 from the cup body 3. Therefore, while satisfying the limitation of the stirring blade 4, it can also avoid the stirring blade 4 being difficult to remove due to excessive attraction force. The magnetic attraction force of the first magnetic component 6 and the second magnetic component 7 should be maintained between 3N and 7N. Furthermore, it can be concluded that 36π≤φ≤144πμWb,9π≤S1≤49πmm 2 .

[0079]

[0080] Table 3

[0081] Table 4 shows the data on the change of magnetic attraction force between the first magnetic attractor 6 and the second magnetic attractor 7 when both are magnets in this embodiment. Multiple experiments have shown that only when the magnetic attraction force of the first magnetic attractor 6 and the second magnetic attractor 7 is greater than 3N can the cutter shaft 41 be effectively limited, preventing it from tipping over and detaching from the mounting groove 31 during material feeding. It should also be noted that although other numerical ranges in the table meet the magnetic attraction force requirements, they are insufficient, so some ranges are discarded. For example, when φ1=500π and φ2≥36πμWb, the higher the magnetic attraction strength of a magnet of the same area, the higher its cost, while the increase in magnetic attraction force is not significant, so this range is discarded. Similarly, when φ1≥36πμWb and φ1=421π, again, the higher the magnetic attraction strength of a magnet of the same area, the higher its cost, while the increase in magnetic attraction force is not significant, so this range is discarded.

[0082] Thus, the magnetic flux φ1 of the first magnetic attractor in this application satisfies: 9π≤φ1≤315πμWb, and the magnetic flux φ2 of the second magnetic attractor satisfies: 9π≤φ2≤421πμWb. That is, the first magnetic attractor 6 is a magnet with a magnetic flux φ1 between 9πμWb and 421πμWb, and the second magnetic attractor 7 is a magnet with a magnetic flux φ2 between 9πμWb and 315πμWb. As shown in the table, when the magnetic flux of one magnet remains constant, the magnetic attraction between the two magnets first increases and then decreases as the magnetic flux of the other magnet increases. The applicant discovered that when the magnetic flux φ1 of the first magnetic attractor 6 satisfies: 9πμWb≤φ1≤421πμWb, and the magnetic flux φ2 of the second magnetic attractor 7 satisfies: 9πμWb≤φ2≤315πμWb, a good adsorption effect can be ensured between the cutter shaft 41 and the mounting groove 31, while also facilitating the removal of the cutter shaft 41 from the mounting groove 31. When φ1 is less than 9πμWb or φ2 is less than 9πμWb, the magnetic attraction between the two magnets is too weak, which can easily cause the cutter shaft 41 to tilt when the user feeds material, affecting the stable start-up of the cutter shaft 41's rotation. When 9πμWb≤φ1≤421πμWb and φ2>315πμWb, compared to when φ2 is 315πμWb, the magnetic attraction of both decreases, and there are already cases where the magnetic attraction is too weak or too strong. Similarly, when 9πμWb≤φ2≤315πμWb and φ1>421πμWb, the magnetic attraction forces of both decrease, and the magnetic attraction forces are either too small or too large.

[0083] Furthermore, as described in the aforementioned embodiments, the magnetic attraction force between the first magnetic attractor 6 and the second magnetic attractor 7 should be maintained between 3N and 7N. This leads to the following further conclusions: φ1 = 9πμWb, and 9π ≤ φ2 ≤ 225πμWb; or φ1 = 36πμWb, and 9π ≤ φ2 ≤ 36πμWb; or 81π ≤ φ1 ≤ 421πμWb, and φ2 = 9πμWb; or 225π ≤ φ1 ≤ 421πμWb, and φ2 = 36πμWb; or φ1 = 421πμWb, φ2 = 81πμWb.

[0084]

[0085] Table 4

[0086] As a preferred embodiment of this application, such as Figure 1As shown, the stirring blade 4 also includes a blade 42, and the blade shaft 41 includes a blade shaft body that fixes the blade 42. The blade shaft body has a hollow cavity 411 with an opening at the bottom. By providing a hollow cavity 411 with an internal hollow structure and an opening at the bottom, it is convenient for the blade shaft body to be demolded, which helps to reduce the overall weight of the blade shaft body and make it easier to rotate. At the same time, it can reduce the weight of the whole machine, making it easier for users to pick up and put down the whole machine. It can also reduce the amount of material used for demolding the blade shaft body, thereby reducing production costs. Furthermore, it can make the side wall thickness of the blade shaft body uniformly formed to ensure the stability of the stirring blade 4 when rotating, and avoid the situation where the entire blade shaft body is solid, which would result in a slower cooling rate after injection molding and thus reduce production efficiency.

[0087] It should be noted that this application does not specifically limit the installation method of the first magnetic suction member 6 in this embodiment. The first magnetic suction member 6 can be directly installed and fixed and sealed at the bottom opening of the hollow cavity 411. It includes an extension section extending into the hollow cavity 411 and a sealing section connected to the bottom end of the extension section and expanding radially outward. The top wall of the sealing section abuts against the bottom wall of the blade shaft body, so that the first magnetic suction member 6 can achieve magnetic attraction with the second magnetic suction member 7 while also sealing the hollow cavity 411, realizing the multi-functionality of the first magnetic suction member 6, eliminating the need for other structural components to seal the hollow cavity 411, simplifying the structure of the stirring blade 4, and improving the compactness of the overall structure.

[0088] As a preferred embodiment of this application, such as Figure 1 , Figure 2 , Figure 3 As shown, the stirring blade 4 also includes a fitting 8 installed at the opening of the hollow cavity 411, and the first magnetic suction member 6 is installed on the fitting 8.

[0089] By configuring the stirring blade 4 to include a fitting 8 installed at the opening of the hollow cavity 411, the fitting 8 can seal the hollow cavity 411 alone or in conjunction with other parts, ensuring the airtightness of the hollow cavity 411 and preventing food slurry or other liquids from entering the hollow cavity 411 during food processing, which could lead to food residue inside, causing odors or even mold. Simultaneously, the first magnetic suction member 6 is installed on the fitting 8 to fix it in place, ensuring the stability of its position. This prevents the first magnetic suction member 6 from shifting after prolonged use of the food processor, which could weaken its magnetic attraction with the second magnetic suction member 7, thus reducing the limiting effect of the first and second magnetic suction members 6 on the stirring blade 4 and consequently causing poor stability during the rotation of the stirring blade 4. This design further improves the rotational stability of the stirring blade 4.

[0090] It should be further noted that this application does not specifically limit the installation method of the fitting 8 in this embodiment, which can be any one of the following embodiments:

[0091] Example 1: As Figure 1 , Figure 2 As shown, in this embodiment, the fitting 8 is completely submerged in the opening of the hollow cavity 411, and the cutter shaft body is inserted into the mounting groove 31.

[0092] By setting the fitting 8 to be completely submerged in the opening of the hollow cavity 411, the fitting 8 is completely isolated from the inner wall of the mounting groove 31 through the cutter shaft body. This increases the contact area between the fitting 8 and the hollow cavity 411, thereby improving the stability of the connection between the fitting 8 and the cutter shaft body. Furthermore, it isolates the sidewall of the fitting 8 from the sidewall of the mounting groove 31, further preventing displacement of the fitting 8 due to contact with the sidewall of the mounting groove 31. Simultaneously, the outer bottom surface of the fitting 8 is higher than or flush with the bottom surface of the cutter shaft body, allowing the bottom surface of the cutter shaft body to support and limit the movement of the bottom surface of the mounting groove 31. This isolates the outer bottom surface of the fitting 8 from the bottom wall of the mounting groove 31, achieving omnidirectional isolation between the fitting 8 and the mounting groove 31, further preventing displacement of the fitting 8 due to force.

[0093] Furthermore, such as Figure 2 As shown, the outer bottom surface of the fitting 8 is provided with an arc surface 85 that protrudes towards the top of the cutter shaft 41.

[0094] By providing an arc surface 85 that protrudes towards the top of the cutter shaft 41 on the outer bottom surface of the fitting 8, the outer bottom surface of the fitting 8 can be further moved away from the bottom wall of the mounting groove 31, thereby further preventing the bottom wall of the mounting groove 31 from exerting an upward force on the bottom wall of the fitting 8, causing the fitting 8 to shift, and further ensuring the stability of the position of the fitting 8.

[0095] Example 2: Figure 3 , Figure 4 As shown, in this embodiment, the fitting 8 includes a first shaft segment 83 inserted into the opening of the hollow cavity 411, and a second shaft segment 84 located below the first shaft segment 83 and radially expanded. The second shaft segment 84 and the bottom end of the cutter shaft body are inserted into the mounting groove 31.

[0096] By configuring the fitting 8 to include a first shaft segment 83 inserted into the opening of the hollow cavity 411, and a second shaft segment 84 located below the first shaft segment 83 and radially expanding, with the second shaft segment 84 and the lower end of the cutter shaft body interlocking with the mounting groove 31, the fitting 8 can be interlocked with the hollow cavity 411 through the first shaft segment 83, while simultaneously sealing the hollow cavity 411 and ensuring its airtightness. Furthermore, the second shaft segment 84 abuts against the bottom wall of the cutter shaft body. After the cutter shaft body and the second shaft segment 84 are inserted into the mounting groove 31, the second shaft segment 84 is subjected to an upward force and abuts against the bottom end of the cutter shaft body, preventing the fitting 8 from moving upward and ensuring the reliability of the fitting 8's position.

[0097] Furthermore, such as Figure 4 As shown, the second shaft segment 84 includes a stepped portion 841 with the stepped surface 8411 facing upwards, and the first magnetic member 6 is clamped between the stepped surface 8411 and the bottom surface of the cutter shaft body.

[0098] By including a first magnetic 6 in the stirring blade 4 and a second magnetic 7 in the cup body 3 that magnetically engages with the first magnetic 6, the blade shaft body can not only be limited by the mounting groove 31, but also further limited by the magnetic engagement of the first magnetic 6 and the second magnetic 7, thus ensuring the stability of the stirring blade 4 position. Furthermore, the second shaft section 84 includes a stepped portion 841 with the stepped surface 8411 facing upwards. The first magnetic 6 is clamped between the stepped surface 8411 and the bottom surface of the blade shaft body, eliminating the need for a separate structural component to install the first magnetic 6. This simplifies the structure of the stirring blade 4, reduces production costs, and simultaneously allows the first magnetic 6 to be installed and fixed while the blade shaft body and the fitting 8 are assembled, improving assembly efficiency and shortening assembly time.

[0099] Example 3: In this example, the fitting 8 includes a first shaft segment 83 inserted into the opening of the hollow cavity 411, and a second shaft segment 84 located below the first shaft segment 83 and radially expanded, and the outer diameter of the second shaft segment 84 is larger than the outer diameter of the cutter shaft body to limit it with the inner sidewall of the mounting groove 31.

[0100] In another preferred embodiment of this application, the first magnetic member 6 is arranged to bulge outward and radially expand relative to the bottom of the cutter shaft 41, so that the first magnetic member 6 is limited to the inner sidewall of the mounting groove 31.

[0101] In another preferred embodiment of this application, the bottom of the cutter shaft 41 is inserted into the mounting groove 31, and the outer diameter of the first magnetic member 6 is smaller than the outer diameter of the bottom of the cutter shaft 41, so that the cutter shaft 41 is limited to the inner sidewall of the mounting groove 31.

[0102] By making the outer diameter of the first magnetic 6 smaller than the bottom outer diameter of the cutter shaft 41, the cutter shaft 41 is limited to the inner sidewall of the mounting groove 31, thus isolating the sidewall of the first magnetic 6 from the inner sidewall of the mounting groove 31. This protects the first magnetic 6 and effectively prevents it from contacting the inner sidewall of the mounting groove 31 and being subjected to the radial force of the inner sidewall, which would cause it to shift laterally. This would result in a decrease in the magnetic attraction between the first magnetic 6 and the second magnetic 7, leading to a reduction in their magnetic attraction and a decrease in the limiting effect on the stirring blade 4. This helps to further improve the limiting effect on the stirring blade 4.

[0103] The application also found that when the materials of the first magnetic 6 and the second magnetic 7 are different, their radii also affect the adsorption stability between the cutter shaft 41 and the mounting groove 31. It should be noted that this application does not specifically limit the relative dimensional relationship and structure of the first magnetic 6 and the second magnetic 7; they can be any of the following embodiments:

[0104] Example 4: Figure 2 As shown, in this embodiment, one of the first magnetic attractor 6 and the second magnetic attractor 7 is a magnetic metal component, and the other is a magnet. More preferably, the first magnetic component is a magnet. The second magnetic attractor 7 is a magnetic metal component that magnetically engages with the magnet.

[0105] Specifically, the applicant conducted multiple sets of tests on the first magnetic chuck 6 and the second magnetic chuck 7 in this embodiment, and recorded the test data in Table 3. Table 3 corresponds to the data on the change of magnetic attraction force between the two as a function of radius when the second magnetic chuck 7 is a metal part and the first magnetic chuck 6 is a magnet in this embodiment. According to multiple tests, it was found that only when the magnetic attraction force of the first magnetic chuck 6 and the second magnetic chuck 7 is greater than 3N can the cutter shaft 41 be effectively limited, so as to prevent the cutter shaft 41 from tipping over and falling out of the mounting groove 31 when materials are being fed.

[0106] As shown in Table 5, the data shows that when the magnet radius remains constant, the magnetic attraction force of both components first increases and then remains constant as the radius of the metal parts increases; conversely, when the metal parts radius remains constant, the magnetic attraction force of both components first increases and then decreases as the magnet radius increases. Therefore, to ensure that the magnetic attraction force of the first magnetic component 6 and the second magnetic component 7 is greater than 3N, and that 6mm≤R1≤12mm, 8mm≤R2≤20mm (i.e., the magnet has a radius R1 between 6mm and 12mm, and the magnetic metal part has a radius R2 between 8mm and 20mm); or 14mm≤R1≤20mm, 14mm≤R2≤16mm (i.e., the magnet has a radius R1 between 14mm and 20mm, and the magnetic metal part has a radius R2 between 14mm and 16mm).

[0107] If R1 is less than 6mm, the magnet size is too small, making it difficult to manufacture and install. If R1 is greater than 12mm but R2 is less than 14mm, the magnetic attraction between them is too weak. When 6mm≤R1≤12mm but R2 is less than 8mm, the magnetic attraction between them is still too weak, and the metal parts are not conducive to manufacturing and installation. In the second case, when both the first magnetic component 6 and the second magnetic component 7 are magnets, the radius R1 of the first magnetic component 6 and the radius R2 of the second magnetic component 7 satisfy 6mm≤R1≤14mm, 6mm≤R2≤20mm; or, 16mm≤R1≤20mm, 8mm≤R2≤18mm. If R1 is less than 6mm or R2 is less than 6mm, on the one hand, the magnet is difficult to manufacture and install, and on the other hand, the magnetic attraction between them is insufficient to stably attract the cutter shaft 41 and the mounting groove 31. If R2 is greater than 20mm, or R1 is greater than 20mm, the dimensions of the mounting groove 31 and the cutter shaft 41 will be too large, easily exposing the gap between the cutter shaft 41 and the mounting groove 31 within the feeding range. This gap can cause material to get stuck, increasing the cost of the stirring blade 4 and reducing the usable space in the stirring cup. If R2 is 6mm and R1 is between 16mm and 20mm, the magnetic attraction between them is still insufficient.

[0108] Furthermore, although the magnetic attraction force of the two magnets within the aforementioned range is greater than 3N, which can achieve stable positioning of the blade shaft 41, in actual use, if the magnetic attraction force of the two magnets is too large, it will be difficult for the stirring blade 4 to be removed from the cup body 3. The user needs to apply a large force to remove the stirring blade 4. Through experimental analysis, when the magnetic attraction force is below 7N, the user can easily remove the stirring blade 4 from the cup body 3. Therefore, while satisfying the positioning of the stirring blade 4, it can also avoid the stirring blade 4 being difficult to remove due to excessive attraction force. The magnetic attraction force of the first magnetic attraction component 6 and the second magnetic attraction component 7 should be maintained between 3N and 7N. Then, the corresponding ranges of R1 and R2 are further derived: 6mm≤R1≤12mm, 8mm≤R2≤10mm; or, R1=6mm, 12mm≤R2≤20mm; or, R1=12mm, R2=12mm; or, 16mm≤R1≤20mm, R2=14mm.

[0109]

[0110] Table 5

[0111] Example 5: In this example, both the first magnetic attractor 6 and the second magnetic attractor 7 are magnets.

[0112] Specifically, the applicant conducted multiple sets of tests on the first magnetic chuck 6 and the second magnetic chuck 7 in this embodiment, and recorded the test data in Table 5. These tables correspond to the data on the variation of the magnetic attraction force of both the second magnetic chuck 7 and the first magnetic chuck 6 with their radius when both are magnets. Based on multiple tests, it was found that only when the magnetic attraction force of the first magnetic chuck 6 and the second magnetic chuck 7 is greater than 3N can the cutter shaft 41 be effectively limited, thus preventing the cutter shaft 41 from tipping over and detaching from the mounting groove 31 when materials are being fed in.

[0113] As shown in Table 6 and Figure 15 As shown in the table and attached figures, the magnetic attraction force of the two magnets first increases and then decreases as the radii of the two magnets increase. When the magnetic attraction force of the first magnetic element 6 and the second magnetic element 7 is greater than 3N, 8mm≤R1≤14mm, 6mm≤R2≤20mm, that is, the first magnetic element 6 has a radius R1 between 8mm and 14mm, and the second magnetic element 7 has a radius R1 between 6mm and 20mm; or, 16mm≤R1≤20mm, 8mm≤R2≤18mm, that is, the first magnetic element 6 has a radius R1 between 16mm and 20mm, and the second magnetic element 7 has a radius R1 between 8mm and 18mm. If R1 is less than 8mm or R2 is less than 6mm, on the one hand, the magnets are difficult to manufacture and install, and on the other hand, the magnetic attraction force between them is insufficient to stably attract the cutter shaft 41 and the mounting groove 31. If R2 is greater than 20mm, or R1 is greater than 20mm, the dimensions of the mounting groove 31 and the cutter shaft 41 will be too large, easily exposing the gap between the cutter shaft 41 and the mounting groove 31 within the feeding range. This gap can cause material to get stuck, increasing the cost of the stirring blade 4 and reducing the usable space in the stirring cup. If R2 is 6mm and R1 is between 16mm and 20mm, the magnetic attraction between them is still insufficient.

[0114] Furthermore, as described in Embodiment 4 above, the magnetic attraction force of the first magnetic attractor 6 and the second magnetic attractor 7 should be maintained between 3N and 7N, thereby further determining the corresponding ranges of R1 and R2, which are: 8mm≤R1≤14mm, 6mm≤R2≤8mm; or, R1=8mm, 10mm≤R2≤20mm; or, 18mm≤R1≤20mm, 8mm≤R2≤10mm; or, R1=16mm, R2=8mm.

[0115]

[0116] Table 6

[0117] As a preferred embodiment of this application, such as Figure 13 , Figure 14As shown, the stirring blade 4 also includes a blade 42 disposed on the blade shaft 41. The blade 42 includes a cutting edge 422 for food processing and a blunt edge 421 connecting the cutting edge 422 and the blade shaft 41. The maximum outer diameter of the blunt edge 421 along the rotation center of the blade 42 is not less than the outer diameter of the mounting groove 31.

[0118] By configuring the blade 42 to include a cutting edge 422 for food processing and a blunt edge 421 connecting the cutting edge 422 and the blade shaft 41, the mixing blade 4 rotates and effectively cuts the food through the cutting edge 422 after the user places the food into the cup body 3. After processing the food, the user can hold the blunt edge 421 to lift the mixing blade 4 from the cup body 3, making the operation more convenient and quick. The user can also hold the blunt edge 421 to clean the food, making cleaning easier and improving the user experience. Furthermore, the maximum outer diameter of the blunt end 421 along the rotation center of the blade 42 is not less than the outer diameter of the mounting groove 31, so that the blunt end 421 covers the mounting groove 31. This allows the food to be isolated from the mounting groove 31 during processing by blocking the mounting groove 31 with the blunt end 421. This prevents the food from being squeezed into the gap between the mounting groove 31 and the blade shaft 41, which would increase the frictional resistance between the blade shaft 41 and the mounting groove 31 and cause the stirring blade 4 to rotate unevenly. At the same time, it also prevents the food from entering the mounting groove 31, which would make the mounting groove 31 difficult to clean.

[0119] It should be noted that this application does not specifically limit the relative relationship between the outer diameter of the blunt end 421 and the radius of the mounting groove 31. As a preferred embodiment of this application, such as... Figure 2 , Figure 13 , Figure 14 As shown, the maximum outer diameter R3 of the blunt opening 421 and the radius R4 of the mounting groove 31 satisfy: 1.5≤R3 / R4≤3.

[0120] By setting the maximum outer diameter R3 of the blunt end 421 and the radius R4 of the mounting groove 31 to satisfy: 1.5≤R3 / R4≤3, the situation where the maximum outer diameter of the blunt end 421 is relatively small compared to the radius of the mounting groove 31 is avoided, which would prevent the blunt end 421 from effectively blocking the mounting groove 31 and causing food to be easily squeezed into the gap between the mounting groove 31 and the cutter shaft 41. At the same time, the situation where the maximum outer diameter of the blunt end 421 is relatively large compared to the radius of the mounting groove 31 is avoided, which would cause food to accumulate at the blunt end 421 and prevent the food from being effectively cut.

[0121] As a preferred embodiment of this application, such as Figure 13As shown, a connecting ring 43 is protruding on the outer peripheral surface of the cutter shaft 41. A blade 42 is embedded in the connecting ring 43. The blade 42 extends radially outward along the connecting ring 43. The maximum outer diameter of the connecting ring 43 is not less than the radius of the mounting groove 31, and the connecting ring 43 surrounds the outer wall of the cutter shaft 41.

[0122] By providing a connecting ring 43 protruding from the outer circumference of the blade shaft 41, and embedding a blade 42 on the connecting ring 43, the blade shaft 41 and the blade 42 are connected, ensuring the stability of the connection and fit between the blade 42 and the blade shaft 41. Simultaneously, the maximum outer diameter of the connecting ring 43 is not less than the radius of the mounting groove 31, thus shielding the mounting groove 31 and isolating the food from it, preventing the food from being squeezed into the gap between the mounting groove 31 and the blade shaft 41. Furthermore, the connecting ring 43 encircles the outer wall of the blade shaft 41, providing omnidirectional shielding of the mounting groove 31 in the circumferential direction, further enhancing the isolation between the mounting groove 31 and the food, preventing the food from entering the mounting groove 31; on the other hand, it enhances the overall structural strength of the blade shaft 41, preventing deformation when subjected to large radial forces.

[0123] It should be noted that this application does not specifically limit the structure of the connecting ring 43, such as... Figure 13 As shown, there are multiple blades 42, and two adjacent blades 42 are spaced apart along the axial direction of the blade shaft 41. The connecting ring 43 has an upper half ring that connects to the upper blade 42 and a lower half ring that connects to the lower blade 42. The two half rings are connected by an inclined connecting section.

[0124] As a preferred embodiment of this application, such as Figures 6 to 12 As shown, an isolation member 5 is provided between the mounting groove 31 and the first magnetic member 6 to separate the two.

[0125] By providing an isolation element 5 between the mounting groove 31 and the first magnetic suction element 6, the first magnetic suction element 6 is isolated from the mounting groove 31. This prevents the first magnetic suction element 6 from contacting the mounting groove 31 when rotating with the blade shaft 41. This effectively avoids the first magnetic suction element 6 from rubbing against the cup body 3 during high-speed rotation with the blade shaft 41, which would cause severe wear and generate a lot of black powder that mixes into the food and contaminates it. At the same time, it also prevents the first magnetic suction element 6 from being severely worn, which would reduce its magnetic attraction and thus worsen its limiting effect on the blade shaft 41. This helps to extend the service life of the entire stirring blade 4, achieves isolation and protection for the first magnetic suction element 6, and ensures stable limiting of the blade shaft 41 while ensuring smooth food processing, thus improving the user experience.

[0126] It should be noted that this application does not specifically limit the structure of the spacer 5, which can be any of the following embodiments:

[0127] Example 6: As Figures 6 to 12 As shown, in this embodiment, the isolation member 5 includes a base plate 51 and a positioning ring 52 extending upward from the base plate 51 and fixedly connected to the bottom of the cutter shaft 41. The first magnetic suction member 6 is installed in the mounting cavity formed by the positioning ring 52 and the base plate 51.

[0128] By configuring the isolation member 5 as including a base plate 51 and a positioning ring 52 extending upward from the base plate 51 and fixedly connected to the bottom of the cutter shaft 41, the first magnetic suction member 6 is installed in the mounting cavity formed by the positioning ring 52 and the base plate 51. This allows the isolation member 5 to isolate the first magnetic suction member 6 from the bottom wall of the mounting groove 31 through the base plate 51, and at the same time, to isolate the first magnetic suction member 6 from the side wall of the mounting groove 31 through the positioning ring 52. This achieves all-round isolation between the first magnetic suction member 6 and the mounting groove 31, effectively avoiding the situation where the first magnetic suction member 6 is severely worn due to friction between the first magnetic suction member 6 and the mounting groove 31.

[0129] Furthermore, such as Figure 7 As shown, the mounting cavity is provided with a fixing groove 54 for fixing the first magnetic component 6.

[0130] By providing a fixing groove 54 within the mounting cavity for securing the first magnetic component 6, the first magnetic component 6 is effectively fixed and positioned, ensuring its stability within the mounting cavity. This prevents the first magnetic component 6 from shifting and colliding with the inner wall of the mounting cavity, thus avoiding noise. It also prevents the blade shaft 41 from becoming radially wobbly due to the movement of the first magnetic component 6, which could cause instability in the rotation of the stirring blade 4. Furthermore, it prevents the blade shaft 41 from becoming unstable after the first magnetic component 6 has moved and is properly engaged with the second magnetic component 7, thus ensuring stable positioning of the blade shaft 41.

[0131] It should be noted that this application does not specifically limit the structure of the fixing groove 54 in this embodiment. As a preferred embodiment of this application, such as Figure 7 As shown, the base plate 51 is also provided with a positioning post 53 extending upward and into the cutter shaft 41. The positioning post 53, the base plate 51, and the positioning ring 52 together form an annular fixing groove 54. The first magnetic attractor 6 is annular and fixed in the fixing groove 54. Further, as... Figure 8 As shown, the first magnetic element 6 can be a complete ring-shaped element; or it can be, as shown in the figure, Figure 9 As shown, the fixing groove 54 is provided with multiple dividing ribs 55 to divide the fixing groove 54 into multiple segments, and each segment is provided with a first magnetic suction element 6.

[0132] It should also be noted that this application does not specifically limit the fixing method of the first magnetic member 6 in this embodiment, which can be any of the following embodiments:

[0133] Implementation method 1: such as Figure 6 , Figure 7 , Figure 8 As shown, in this embodiment, the bottom end of the cutter shaft 41 is provided with a positioning rib 44 extending downward into the mounting cavity, and the first magnetic suction member 6 is clamped between the positioning rib 44 and the base plate 51.

[0134] By providing a positioning rib 44 extending downward into the mounting cavity at the bottom end of the cutter shaft 41, and clamping the first magnetic 6 between the positioning rib 44 and the base plate 51, the cutter shaft 41 can limit and fix the first magnetic 6 by abutting against the first magnetic 6 at its bottom end while being installed and engaged with the positioning ring 52 through the positioning rib 44. This eliminates the need for a separate structural component to limit the first magnetic 6 over time, thus achieving functional integration of the positioning rib 44, which helps to improve structural compactness and reduce production costs.

[0135] Implementation method 2: such as Figure 10 As shown, in this embodiment, the cutter shaft 41 is provided with a hollow cavity 411 that is hollow inside and open at the bottom. The positioning ring 52 is at least partially fixed to the inner sidewall of the hollow cavity 411, and the first magnetic suction member 6 is fixed to the base plate 51.

[0136] By providing a hollow cavity 411 with an open bottom on the cutter shaft 41, the overall weight of the cutter shaft 41 is reduced, making its rotation easier. This also reduces the weight of the entire machine, facilitating user handling and reducing the amount of material used for demolding the cutter shaft 41, thereby lowering production costs. Furthermore, it ensures uniform wall thickness of the cutter shaft 41 during molding, guaranteeing stability of the stirring blade 4 during rotation and preventing the entire cutter shaft 41 from being solid, which would result in slower cooling after injection molding and reduced production efficiency. Simultaneously, the positioning ring 52 is at least partially fixed to the inner wall of the hollow cavity 411, securing the isolation member 5 to the cutter shaft 41. The first magnetic suction member 6 is fixed to the base plate 51, improving its fixation and ensuring the stability of its position.

[0137] Specifically, such as Figure 10 As shown, in this embodiment, the upper part of the positioning ring 52 is fixedly connected to the hollow cavity 411, and the lower part is inserted into the mounting groove 31. Of course, the positioning ring 52 is not limited to being fixedly connected to the inner wall of the hollow cavity 411 at least partially; the positioning ring 52 is completely embedded in the hollow cavity 411, and at this time, the bottom of the cutter shaft 41 is inserted into the mounting groove 31.

[0138] Implementation method 3: such as Figure 11 , Figure 12As shown, in this embodiment, the stirring blade 4 also includes a fastener that passes through the first magnetic attractor 6 and is fastened to the base plate 51. Preferably, an upwardly extending stud 56 is provided on the bottom wall of the base plate 51. The first magnetic attractor 6 is annular and sleeved on the outside of the stud 56. The fastener is a bolt and is fastened to the stud 56.

[0139] Example 7: Figure 3 , Figure 4 As shown, in this embodiment, the isolation member 5 is provided with a fixing groove 54 for mounting the first magnetic member 6. The fixing groove 54 has an outward-facing mounting opening. The outer end face of the first magnetic member 6 is positioned further inward than the mounting opening to form an isolation gap between the first magnetic member 6 and the mounting groove 31. It should be noted that in this embodiment, the structure of the isolation member 5 can be the same as that of the fitting member 8 in the above embodiment 2.

[0140] By providing a fixing groove 54 for installing the first magnetic component 6 in the isolation member 5, and by having an outward-facing mounting opening in the fixing groove 54, the assembly personnel can directly insert the first magnetic component 6 into the fixing groove 54 through the mounting opening, making assembly more convenient and faster, and improving the assembly efficiency of the first magnetic component 6. Simultaneously, the outer end face of the first magnetic component 6 is positioned further inward than the mounting opening, forming an isolation gap between the first magnetic component 6 and the mounting groove 31. This isolation gap effectively prevents the first magnetic component 6 from rubbing against the mounting groove 31, thus avoiding severe wear of the first magnetic component 6.

[0141] It should be noted that this application does not specifically limit the orientation of the mounting port in this embodiment, and it can be any of the following embodiments:

[0142] Implementation Method 4: In this implementation method, the mounting opening is set towards the bottom wall of the mounting groove 31, and the bottom surface of the first magnetic suction member 6 is higher than or flush with the bottom surface of the isolation member 5.

[0143] Implementation method 5: such as Figure 4As shown, in this embodiment, the mounting opening is positioned towards the side wall of the mounting groove 31. The outer wall of the first magnetic member 6 is positioned further inward than the outer wall of the separator 5. Specifically, the separator 5 includes a first shaft segment 83 inserted into the opening of the hollow cavity 411, and a second shaft segment 84 located below the first shaft segment 83 and radially expanding. The second shaft segment 84 and the lower end of the cutter shaft 41 are inserted into the mounting groove 31. The second shaft segment 84 includes a stepped portion 841 with a stepped surface 8411 facing upward. The stepped portion 841 and the bottom surface of the cutter shaft 41 enclose a fixing groove 54. The first magnetic member 6 is clamped between the stepped surface 8411 and the bottom surface of the cutter shaft 41. Of course, the fixing groove 54 in this embodiment is not limited to the above-described configuration. It can also be formed by forming an inwardly recessed annular groove on the side wall of the separator 5 to form the fixing groove 54.

[0144] Example 8: In this example, the cutter shaft 41 is provided with a hollow cavity 411 with an open bottom. The first magnetic suction member 6 is fixed inside the hollow cavity 411, and the isolation member 5 is placed over the opening of the hollow cavity 411. It should be noted that in this example, the isolation member 5 can have the same structure as the fitting member 8 in Example 1.

[0145] By fixing the first magnetic 6 inside the hollow cavity 411, the structural components on the isolation member 5 are eliminated to fix the first magnetic 6, further simplifying the structure and helping to improve the compactness of the stirring blade 4 structure, while reducing production costs.

[0146] As a preferred embodiment of this application, such as Figure 2 As shown, the bottom surface of the cup body 3 is provided with a vertically extending receiving groove 33, and the second magnetic member 7 is inserted into the receiving groove 33.

[0147] By providing a vertically extending receiving groove 33 on the outer bottom surface of the cup body 3, and inserting the second magnetic suction member 7 into the receiving groove 33, the second magnetic suction member 7 is limited and fixed. At the same time, the second magnetic suction member 7 can be installed and fixed by simple insertion, which is simple and reliable to assemble and helps to improve assembly efficiency.

[0148] It should be noted that this application does not specifically limit the forming method of the receiving groove 33 in this embodiment. As a preferred embodiment of this application, such as Figure 2 As shown, the bottom wall of the cup body 3 is provided with a downwardly protruding mounting part 34, and the mounting groove 31 is formed on the mounting part 34. The outer bottom surface of the cup body 3 is provided with a surrounding rib 32 surrounding the outside of the mounting part 34. The surrounding rib 32 and the outer wall of the mounting part 34 cooperate to form a receiving groove 33.

[0149] It should also be noted that this application does not specifically limit the structure of the second magnetic element 7, which can be any of the following embodiments:

[0150] In one of the preferred embodiments, such as Figure 2 As shown, the receiving groove 33 is annular, and the second magnetic member 7 includes a horizontally extending horizontal plate 71 and an insertion ring 72 connected to the outer periphery of the horizontal plate 71 and inserted into the annular receiving groove 33.

[0151] Furthermore, the first magnetic chuck 6 and the insertion ring 72 overlap at least partially in height, so that the horizontal plate 71 can provide a downward magnetic attraction force to the first magnetic chuck 6, while the insertion ring 72 can provide a radial magnetic attraction force to the first magnetic chuck 6, thereby achieving a limiting effect on the cutter shaft body in two directions, which helps to further enhance the limiting effect on the cutter shaft body.

[0152] In another preferred embodiment, such as Figure 5 As shown, multiple receiving slots 33 are provided along the circumference of the cup body 3, and each receiving slot 33 is provided with a second magnetic suction element 7.

[0153] This application also protects a food processing machine, including the cup assembly as described above and a detachable main unit 1 disposed above the cup assembly, wherein the main unit 1 is provided with a motor 2 for driving the stirring blade 4 to rotate.

[0154] The technical solutions protected by this utility model are not limited to the above embodiments. It should be noted that any combination of the technical solutions of any embodiment with one or more other embodiments is within the protection scope of this utility model. Although this utility model has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A cup assembly for a food processing machine, comprising a cup body and a stirring blade disposed within the cup body, characterized in that, The stirring blade includes a blade shaft. The bottom surface of the cup body is provided with a mounting groove, which is inserted into the bottom of the blade shaft. The bottom of the blade shaft is provided with a first magnetic attracting element, and the cup body is provided with a second magnetic attracting element that magnetically attracts the first magnetic attracting element. The outer diameter D of the first magnetic attracting element and the height L1 of the blade shaft satisfy the condition: 2.5≤L1 / D≤11.

3.

2. The cup assembly for a food processing machine according to claim 1, characterized in that, The height L1 of the cutter shaft is between 40mm and 170mm, and the outer diameter D of the first magnetic suction component is between 10mm and 30mm.

3. A cup assembly for a food processing machine according to claim 1, characterized in that, One of the first magnetic attractor and the second magnetic attractor is a magnetic metal component, and the other is a magnet. The magnet has a magnetic flux φ between 36πμWb and 315πμWb, and the magnetic metal component has an area S of 19πmm². 2 Up to 225πmm 2 Magnetic metal parts between them.

4. A cup assembly for a food processing machine according to claim 1, characterized in that, Both the first magnetic attractor and the second magnetic attractor are magnets. The first magnetic attractor is a magnet with a magnetic flux φ1 between 9πμWb and 421πμWb, and the second magnetic attractor is a magnet with a magnetic flux φ2 between 9πμWb and 315πμWb.

5. A cup assembly for a food processing machine according to claim 1, characterized in that, The stirring blade also includes a blade, and the blade shaft includes a blade shaft body for fixing the blade. The blade shaft body has a hollow cavity with an opening at the bottom end. The stirring blade also includes a fitting installed at the opening of the hollow cavity, and the first magnetic member is installed on the fitting.

6. A cup assembly for a food processing machine according to claim 5, characterized in that, The fitting is fully recessed into the opening of the hollow cavity, and the cutter shaft body is inserted into the mounting groove.

7. A cup assembly for a food processing machine according to claim 5, characterized in that, The fitting includes a first shaft segment inserted into the opening of the hollow cavity, and a second shaft segment located below the first shaft segment and radially expanding, wherein the second shaft segment and the bottom end of the cutter shaft body are inserted into the mounting groove; or... The fitting includes a first shaft segment inserted into the opening of the hollow cavity, and a second shaft segment located below the first shaft segment and radially expanding, wherein the outer diameter of the second shaft segment is larger than the outer diameter of the cutter shaft body to limit the inner sidewall of the mounting groove.

8. A cup assembly for a food processing machine according to claim 1, characterized in that, The first magnetic suction member is arranged to bulge outward and radially expand relative to the bottom of the cutter shaft, so that the first magnetic suction member is limited to the inner sidewall of the mounting groove.

9. A cup assembly for a food processing machine according to claim 1, characterized in that, The bottom of the cutter shaft is inserted into the mounting groove, and the outer diameter of the first magnetic suction member is smaller than the outer diameter of the bottom of the cutter shaft, so that the cutter shaft is limited to the inner sidewall of the mounting groove.

10. A cup assembly for a food processing machine according to claim 1, characterized in that, One of the first and second magnetic components is a magnetic metal component, and the other is a magnet. The magnet has a radius R1 between 6 mm and 12 mm, and the magnetic metal component has a radius R2 between 8 mm and 20 mm; or The magnet is a magnet with a radius R1 between 14 mm and 20 mm, and the magnetic metal part is a magnetic metal part with a radius R2 between 14 mm and 16 mm.

11. A cup assembly for a food processing machine according to claim 1, characterized in that, Both the first magnetic attractor and the second magnetic attractor are magnets. The first magnetic attractor is a first magnetic component with a radius R1 between 8 mm and 14 mm, and the second magnetic attractor is a second magnetic component with a radius R1 between 6 mm and 20 mm; or... The first magnetic element is a first magnetic element with a radius R1 between 16mm and 20mm, and the second magnetic element is a second magnetic element with a radius R1 between 8mm and 18mm.

12. A cup assembly for a food processing machine according to claim 1, characterized in that, The stirring blade also includes a blade mounted on the blade shaft. The blade includes a cutting edge for food processing and a blunt edge connecting the cutting edge and the blade shaft. The maximum outer diameter of the blunt edge along the rotation center of the blade is not less than the outer diameter of the mounting groove.

13. A cup assembly for a food processing machine according to claim 12, characterized in that, The maximum outer diameter R3 of the blunt opening and the radius R4 of the mounting groove satisfy the following condition: 1.5≤R3 / R4≤3.

14. A cup assembly for a food processing machine according to claim 1, characterized in that, The stirring blade also includes a blade mounted on the blade shaft. The distance L2 between the end of the blade and the inner wall of the cup body and the height L3 of the blade shaft inserted into the mounting groove satisfy the following condition: 0.01≤L3 / L2≤1.

5.

15. A cup assembly for a food processing machine according to claim 1, characterized in that, The bottom surface of the cup body is provided with a vertically extending receiving groove, and the second magnetic member is inserted into the receiving groove.

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