Detachable knife assembly and food processor comprising same

Abstract

The utility model discloses a detachable knife assembly and a food processor comprising the same. The detachable knife assembly comprises a driving assembly and a blade assembly, wherein the driving assembly comprises a driving shaft; the blade assembly comprises a connecting sleeve and a blade, the blade is arranged on the connecting sleeve, a connecting hole is formed in the connecting sleeve, the connecting hole is provided with a first hole part and a second hole part which are communicated, and the aperture of the first hole part is smaller than that of the second hole part; when the connecting sleeve is positively arranged, the first hole part is located above the second hole part, and the connecting sleeve is arranged on the driving shaft in a sleeving mode through the connecting hole so as to be in transmission connection with the driving shaft; when the connecting sleeve is inverted, the first hole part is located below the second hole part, and the first hole part abuts against the side wall of the driving shaft to limit transmission connection between the connecting sleeve and the driving shaft. Therefore, potential safety hazards caused by inverted installation of the blade assembly by a user due to misoperation are effectively prevented, the blade assembly cannot be driven in an inverted state even under extreme conditions, and the accident risk is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of small household appliance technology, and in particular to a detachable knife assembly and a food processor including the detachable knife assembly. Background Technology

[0002] While existing detachable blade assemblies allow for quick assembly and disassembly of the blade assembly and drive assembly, users sometimes accidentally invert the blade assembly onto the drive shaft during practical applications. Since the drive shaft operates at high speed, inverted blade assembly not only prevents proper cutting but can also pose serious safety hazards, such as blade detachment or drive shaft damage. Therefore, it is necessary to design a safety mechanism to effectively prevent inverted blade assembly installation to ensure safe operation. Utility Model Content

[0003] In order to overcome at least one of the defects described in the prior art, the present invention provides a detachable blade assembly and a food processor including the same, which aims to avoid safety hazards by improving the design of the connecting sleeve so that the blade assembly cannot form an effective transmission connection with the drive shaft when inverted.

[0004] The technical solution adopted by this utility model to solve its problem is:

[0005] A detachable blade assembly includes: a drive assembly including a drive shaft; and a blade assembly including a connecting sleeve and a blade, the blade being disposed on the connecting sleeve. The connecting sleeve has a connecting hole having a first portion and a second portion communicating with each other, the diameter of the first portion being smaller than the diameter of the second portion. When the connecting sleeve is upright, the first portion is located above the second portion, and the connecting sleeve is fitted onto the drive shaft through the connecting hole for transmission connection with the drive shaft. When the connecting sleeve is inverted, the first portion is located below the second portion, and the first portion abuts against the side wall of the drive shaft to restrict the transmission connection between the connecting sleeve and the drive shaft.

[0006] According to some embodiments of the present invention, the inner sidewall of the first hole is provided with an annular inner edge, and the first opening of the connecting hole is formed at the annular inner edge. The diameter of the first opening is smaller than the diameter of the second hole. When the connecting sleeve is inverted, the annular inner edge abuts against the sidewall of the drive shaft.

[0007] According to some embodiments of the present invention, the side wall of the drive shaft is provided with a drive rib, and the side wall of the connecting hole is provided with a guide rib; when the connecting sleeve is upright, the guide rib and the drive rib are engaged to connect the connecting sleeve and the drive shaft; when the connecting sleeve is inverted, the annular inner edge abuts against the drive rib to restrict the engagement of the drive rib and the guide rib.

[0008] According to some embodiments of the present invention, the guide rib is provided with a clearance channel. When the connecting sleeve is upright, the driving rib passes through the clearance channel and engages with the guide rib.

[0009] According to some embodiments of the present invention, the guide rib is provided with a limiting hole, the drive shaft has a first shaft segment, and the drive rib is disposed on the first shaft segment; when the connecting sleeve is upright, the limiting hole is sleeved on the first shaft segment.

[0010] According to some embodiments of this utility model, the aperture of the first opening is defined as D1, and the total radial length of the driving rib and the first shaft segment is defined as D2. Then D1 and D2 satisfy: D1 < D2.

[0011] According to some embodiments of this utility model, the diameter of the limiting hole is defined as D3, and the diameter of the second hole is defined as D4. Then D1, D2, D3, and D4 satisfy: 4mm≦D3≦D1<D2≦D4≦8mm.

[0012] According to some embodiments of this utility model, there are two driving ribs, which are arranged opposite to each other on both sides of the driving shaft. The guide rib includes two oppositely arranged sub-guide ribs. When the connecting sleeve is upright, the two driving ribs are engaged with the two sub-guide ribs one-to-one.

[0013] According to some embodiments of the present invention, the annular inner edge protrudes from the outer surface of the connecting sleeve.

[0014] In addition, this utility model also provides a food processor, including the detachable blade assembly as described above.

[0015] In summary, the detachable blade assembly and the food processor including it provided by this utility model have at least the following technical effects:

[0016] When the connecting sleeve is correctly positioned (i.e., upright) on the drive shaft, the larger diameter of the second hole allows the connecting sleeve to slide smoothly across the drive shaft until it reaches the predetermined position. At this point, the connecting sleeve and the drive shaft form an effective transmission connection, and the blade assembly can work normally. However, if the connecting sleeve is incorrectly inverted and attempted to be fitted onto the drive shaft, the smaller diameter of the first hole will first contact the drive shaft, and this diameter is insufficient for the connecting sleeve to slide smoothly. Therefore, the first hole will abut against the side wall of the drive shaft, thus physically preventing further assembly of the connecting sleeve and the drive shaft and avoiding transmission connection in the inverted state. In this way, the safety hazards caused by the user's accidental inversion of the blade assembly are effectively prevented. Even in extreme cases, the blade assembly cannot be driven in the inverted state, greatly reducing the risk of accidents. Furthermore, in the correct installation state, the connecting sleeve and the drive shaft can be smoothly assembled and achieve efficient transmission, ensuring that the normal cutting function of the detachable blade assembly is not affected. In addition, the improvements of this utility model are mainly focused on the design of the connecting sleeve, which does not require major modifications to the drive assembly and is easy to manufacture and promote. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the detachable blade assembly (with the connecting sleeve in the upright position) according to an embodiment of the present utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the detachable blade assembly (with the connecting sleeve in the upright position) according to an embodiment of the present utility model;

[0019] Figure 3 This is a cross-sectional structural diagram of the detachable blade assembly (when the connecting sleeve is inverted) according to an embodiment of the present utility model;

[0020] Figure 4 This is a schematic cross-sectional view of the connecting sleeve according to an embodiment of the present utility model;

[0021] Figure 5 This is a cross-sectional structural diagram of the drive component according to an embodiment of the present utility model;

[0022] Figure 6 This is a three-dimensional structural diagram of the connecting sleeve from a first perspective, representing an embodiment of the present utility model.

[0023] Figure 7 This is a three-dimensional structural diagram of the connecting sleeve from a second perspective, representing an embodiment of the present invention.

[0024] The meanings of the reference numerals in the attached figures are as follows:

[0025] 1. Drive assembly; 11. Drive shaft; 111. First shaft segment; 112. Drive rib; 12. Cutter head; 2. Blade assembly; 21. Connecting sleeve; 211. Connecting hole; 2111. First hole; 2112. Second hole; 2113. Annular inner edge; 2114. Guide rib; 2115. Clearance channel; 2116. Limiting hole; 22. Blade. Detailed Implementation

[0026] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0027] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0029] The present invention will now be described in further detail with reference to the accompanying drawings.

[0030] Please see Figures 1 to 7 This embodiment discloses a detachable blade assembly, including a drive assembly 1 and a blade assembly 2. The drive assembly 1 includes a drive shaft 11 and a blade disc 12, with the drive shaft 11 disposed on the blade disc 12. The blade assembly 2 includes a connecting sleeve 21 and a blade 22, with the blade 22 disposed on the connecting sleeve 21. The connecting sleeve 21 has a connecting hole 211, which has a first hole portion 2111 and a second hole portion 2112 communicating with each other. The diameter of the first hole portion 2111 is smaller than the diameter of the second hole portion 2112. Wherein, as... Figure 2 As shown, when the connecting sleeve 21 is in the upright position, the first hole 2111 is located above the second hole 2112, and the connecting sleeve 21 is sleeved on the drive shaft 11 through the connecting hole 211 for transmission connection with the drive shaft 11; as Figure 3 As shown, when the connecting sleeve 21 is inverted, the first hole 2111 is located below the second hole 2112, and the first hole 2111 abuts against the side wall of the drive shaft 11 to restrict the transmission connection between the connecting sleeve 21 and the drive shaft 11.

[0031] The detachable blade assembly disclosed in this embodiment allows the connecting sleeve 21 to slide smoothly across the drive shaft 11 when it is correctly oriented (i.e., upright) on the drive shaft 11. The larger diameter of the second hole 2112 allows the connecting sleeve 21 to reach a predetermined position, thus forming an effective transmission connection between the connecting sleeve 21 and the drive shaft 11, enabling the blade assembly 2 to function normally. However, if the connecting sleeve 21 is incorrectly inverted and attempted to be fitted onto the drive shaft 11, the smaller diameter of the first hole 2111 will first contact the drive shaft 11, and this diameter is insufficient for the connecting sleeve 21 to slide smoothly. Therefore, the first hole 2111 will abut against the side wall of the drive shaft 11, thereby... Physically, further assembly of the connecting sleeve 21 and the drive shaft 11 is prevented, avoiding transmission connection in the inverted state. This effectively prevents safety hazards caused by users accidentally installing the blade assembly 2 inverted. Even in extreme cases, the blade assembly 2 cannot be driven in the inverted state, greatly reducing the risk of accidents. Furthermore, in the correct installation state, the connecting sleeve 21 and the drive shaft 11 can be smoothly assembled and achieve efficient transmission, ensuring that the normal cutting function of the detachable blade assembly is not affected. In addition, the improvements in this embodiment are mainly focused on the design of the connecting sleeve 21, without requiring major modifications to the drive assembly 1, making it easy to manufacture and promote.

[0032] Specifically, in this embodiment, the first hole 2111 is located at one end of the connecting hole 211, and the second hole 2112 is located at the other end of the connecting hole 211. Of course, in some other embodiments, the first hole 2111 and the second hole 2112 may also be located between the two ends of the connecting hole 211, depending on the actual needs.

[0033] like Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, preferably, in this embodiment, the inner wall of the first hole 2111 is provided with an annular inner edge 2113, and a first opening of the connecting hole 211 is formed at the annular inner edge 2113. The diameter of the first opening is smaller than the diameter of the second hole 2112. When the connecting sleeve 21 is inverted, the annular inner edge 2113 abuts against the side wall of the drive shaft 11. Thus, when the connecting sleeve 21 is mistakenly inverted and attempted to be installed onto the drive shaft 11, the first opening of the annular inner edge 2113, due to its small diameter, will first contact the side wall of the drive shaft 11. This design physically prevents the connecting sleeve 21 from sliding further along the drive shaft 11, thereby effectively preventing the blade assembly 2 from forming a transmission connection with the drive shaft 11 in the inverted state. This safety mechanism greatly reduces the safety risks caused by user misoperation. Furthermore, the contact between the annular inner edge 2113 and the side wall of the drive shaft 11 provides intuitive feedback to the user, allowing the user to immediately identify whether the connecting sleeve 21 is in the correct installation direction. If the installation direction is incorrect, the user can quickly correct it to avoid potential safety hazards. In addition, this design does not require any modification to the drive shaft 11, maintaining compatibility with the existing drive shaft 11, making the detachable knife assembly widely applicable to various kitchen utensils, improving the product's versatility and market adaptability.

[0034] like Figure 2 , Figure 3 , Figure 5 and Figure 7As shown, preferably, in this embodiment, the side wall of the drive shaft 11 is provided with a drive rib 112, and the side wall of the connecting hole 211 is provided with a guide rib 2114; when the connecting sleeve 21 is upright, the drive rib 112 and the guide rib 2114 are engaged to connect the connecting sleeve 21 and the drive shaft 11; when the connecting sleeve 21 is inverted, the annular inner edge 2113 abuts against the drive rib 112 to restrict the engagement of the drive rib 112 and the guide rib 2114. Thus, on the one hand, when the connecting sleeve 21 is installed upright, the guide rib 2114 and the drive rib 112 can be precisely engaged to form a stable mechanical lock, ensuring a firm connection between the connecting sleeve 21 and the drive shaft 11. This design not only improves the stability and efficiency of the transmission, but also effectively prevents the connection from loosening due to vibration or external force. On the other hand, if the connecting sleeve 21 is installed upside down by mistake, the annular inner edge 2113 will first contact the drive rib 112. Due to its structural limitations, the annular inner edge 2113 will prevent the normal engagement between the drive rib 112 and the guide rib 2114. This design physically prevents connection in an inverted state, avoiding potential safety hazards. Furthermore, the design of the drive rib 112 and guide rib 2114 provides clear guidance for the connecting sleeve 21 during installation. Users only need to align the connecting sleeve 21 with the drive shaft 11 and gently rotate or push it to achieve quick and accurate installation. This design reduces installation difficulty and improves user experience. Moreover, the snap-fit ​​structure of the drive rib 112 and guide rib 2114 can withstand large torque and shear force, thereby improving the durability and stability of the entire detachable blade assembly. Even under prolonged use or high-load working conditions, it can maintain good transmission performance and connection reliability. Additionally, the interaction between the annular inner edge 2113 and the drive rib 112 provides users with an intuitive feedback mechanism. If the connecting sleeve 21 is installed in an inverted position, the user will immediately feel resistance or be unable to complete the installation, thus quickly identifying and correcting the error. This design effectively prevents safety hazards caused by misoperation.

[0035] like Figure 7As shown, preferably, in this embodiment, the guide rib 2114 is provided with a clearance channel 2115. When the connecting sleeve 21 is upright, the drive rib 112 engages with the guide rib 2114 after passing through the clearance channel 2115. Specifically, after the drive rib 112 passes through the clearance channel 2115, the drive rib 112 and the guide rib 2114 can be engaged by rotating the connecting sleeve 21 at a certain angle. Thus, on the one hand, the design of the clearance channel 2115 allows the connecting sleeve 21 to smoothly slide past the drive shaft 11 during installation until the drive rib 112 reaches the predetermined position. This improvement avoids the installation difficulties or damage risks caused by direct collision between the drive rib 112 and the guide rib 2114 in traditional designs, greatly simplifying the installation steps and improving installation efficiency. On the other hand, the design of the clearance channel 2115 allows the connecting sleeve 21 to smoothly slide past the drive shaft 11 during installation. 1. Until the drive rib 112 reaches the predetermined position, this improvement avoids the installation difficulties or damage risks caused by direct collision between the drive rib 112 and the guide rib 2114 in the traditional design, greatly simplifying the installation steps and improving installation efficiency. On the other hand, by setting the clearance channel 2115, unnecessary friction and collision between the drive rib 112 and the guide rib 2114 during installation are reduced, extending the service life of the product. This design helps to maintain the integrity of the drive rib 112 and the guide rib 2114, reducing the risk of performance degradation or failure due to long-term wear. Furthermore, despite the addition of the clearance channel 2115, this embodiment still maintains the compactness of the connecting sleeve 21 and the drive shaft 11 structure. This design helps to reduce the volume and weight of the entire detachable knife assembly, making it easier to carry and store, while maintaining excellent transmission performance and stability.

[0036] like Figure 2 and Figure 7As shown, preferably, in this embodiment, the guide rib 2114 is provided with a limiting hole 2116, the drive shaft 11 has a first shaft segment 111, and the drive rib 112 is disposed on the first shaft segment 111; when the connecting sleeve 21 is upright, the limiting hole 2116 is fitted onto the first shaft segment 111; thus, on the one hand, the matching design of the limiting hole 2116 and the first shaft segment 111 provides an additional fixing point between the connecting sleeve 21 and the drive shaft 11. This physical locking mechanism greatly enhances the stability of the connection, and can maintain the firmness of the connection even when rotating at high speed or bearing a large load, avoiding safety hazards caused by loose connection; on the other hand, the design of the limiting hole 2116 allows the connecting sleeve 21 to be accurately aligned with the first shaft segment 11 during installation. 1. This design ensures proper alignment between the drive rib 112 and the drive shaft 11, improving installation accuracy and reducing the risk of performance degradation or damage due to improper installation. Furthermore, the cooperation between the limiting hole 2116 and the first shaft segment 111 allows users to quickly and accurately install the connecting sleeve 21 simply by placing it on the drive shaft 11. This simplifies the installation process, reduces operational difficulty, and enhances user convenience. Moreover, the tight fit between the limiting hole 2116 and the first shaft segment 111 not only strengthens the connection stability but also improves the structural strength of the entire detachable tool assembly. This design allows the assembly to better resist deformation and damage during long-term use, extending the product's service life.

[0037] Specifically, in this embodiment, the aperture of the first opening is defined as D1, and the total radial length of the drive rib 112 and the first shaft segment 111 is defined as D2. Preferably, D1 and D2 satisfy: D1 < D2. Thus, when the connecting sleeve 21 is incorrectly installed upside down, since D1 is less than D2, the annular inner edge 2113 will first contact the drive rib 112. This physical blocking mechanism ensures that the connecting sleeve 21 cannot slide further along the drive shaft 11, thereby effectively preventing connection errors caused by upside-down installation. This design greatly enhances the safety and reliability of the product and reduces the risk caused by user misoperation.

[0038] like Figure 4 and Figure 5 As shown, specifically, in this embodiment, the diameter of the limiting hole 2116 is defined as D3, and the diameter of the second hole 2112 is defined as D4. More preferably, D1, D2, D3, and D4 satisfy: 4mm≦D3≦D1<D2≦D4≦8mm.

[0039] like Figure 4 and Figure 5As shown, preferably, in this embodiment, two drive ribs 112 are provided, and the two drive ribs 112 are arranged opposite each other on both sides of the drive shaft 11. The guide rib 2114 includes two oppositely arranged sub-guide ribs. More specifically, the clearance channel 2115 is formed between the two sub-guide ribs, and the limiting hole 2116 is formed between the two sub-guide ribs. When the connecting sleeve 21 is upright, the two drive ribs 112 are locked into the two sub-guide ribs one by one. In this way, the locking design of the two drive ribs 112 and the two sub-guide ribs provides a double fixing point between the connecting sleeve 21 and the drive shaft 11. This double locking mechanism significantly enhances the stability of the connection. Even when rotating at high speed, bearing a large load, or encountering external impact, it can effectively prevent the connection from loosening or falling off, thereby ensuring the safety and reliability of the entire detachable blade assembly.

[0040] like Figure 6 and Figure 7 As shown, preferably, in this embodiment, the annular inner edge 2113 protrudes from the outer surface of the connecting sleeve 21. Specifically, when the connecting sleeve 21 is upright, the connecting sleeve 21 has an upper surface, and the annular inner edge 2113 protrudes from the upper surface of the connecting sleeve 21. Thus, on the one hand, the protruding design of the annular inner edge 2113 makes it easier to perform the forming process to close the connecting sleeve 21 during the manufacturing process. This design reduces manufacturing steps and complexity, improves production efficiency, and reduces manufacturing costs. On the other hand, the protruding annular inner edge 2113 provides a clearer positioning and support point for forming and closing. During the forming process, the annular inner edge 2113 can guide the mold or tool to accurately act on the predetermined position of the connecting sleeve 21, thereby achieving a more uniform and tighter closing effect. Furthermore, the connecting sleeve 21 after forming and closing has stronger structural rigidity and sealing performance. This design allows the connecting sleeve 21 to better resist external forces after installation, preventing loosening or leakage, thereby enhancing the stability and reliability of the connection.

[0041] In addition, this embodiment also provides a food processor including the detachable blade assembly as described above. The food processor has all the advantages of the detachable blade assembly described above, which will not be repeated here.

[0042] In summary, the detachable knife assembly and food processor including it disclosed in this utility model can bring at least the following beneficial technical effects:

[0043] 1) Effectively prevents safety hazards caused by users accidentally installing the blade assembly 2 upside down. Even in extreme cases, the blade assembly 2 cannot be driven in the upside-down state, greatly reducing the risk of accidents.

[0044] 2) The contact between the annular inner edge 2113 and the side wall of the drive shaft 11 provides intuitive feedback to the user, enabling the user to immediately identify whether the connecting sleeve 21 is in the correct installation direction. If the installation direction is incorrect, the user can quickly correct it to avoid potential safety hazards.

[0045] 3) When the connecting sleeve 21 is installed in the correct position, the guide rib 2114 and the drive rib 112 can be precisely engaged to form a stable mechanical lock, ensuring a firm connection between the connecting sleeve 21 and the drive shaft 11. This design not only improves the stability and efficiency of the transmission, but also effectively prevents the connection from loosening due to vibration or external force.

[0046] 4) The tight fit between the limiting hole 2116 and the first shaft segment 111 not only enhances the stability of the connection, but also improves the structural strength of the entire detachable tool assembly. This design enables the assembly to better resist deformation and damage during long-term use.

[0047] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A detachable blade assembly, characterized in that, include: The drive assembly (1) includes a drive shaft (11); The blade assembly (2) includes a connecting sleeve (21) and a blade (22). The blade (22) is disposed in the connecting sleeve (21). The connecting sleeve (21) has a connecting hole (211). The connecting hole (211) has a first hole portion (2111) and a second hole portion (2112) that communicate with each other. The diameter of the first hole portion (2111) is smaller than the diameter of the second hole portion (2112). When the connecting sleeve (21) is upright, the first hole (2111) is located above the second hole (2112), and the connecting sleeve (21) is sleeved on the drive shaft (11) through the connecting hole (211) to drive the drive shaft (11); when the connecting sleeve (21) is inverted, the first hole (2111) is located below the second hole (2112), and the first hole (2111) abuts against the side wall of the drive shaft (11) to restrict the drive connection between the connecting sleeve (21) and the drive shaft (11).

2. The detachable blade assembly according to claim 1, characterized in that, The inner wall of the first hole (2111) is provided with an annular inner edge (2113), and the first opening of the connecting hole (211) is formed at the annular inner edge (2113). The diameter of the first opening is smaller than the diameter of the second hole (2112). When the connecting sleeve (21) is inverted, the annular inner edge (2113) abuts against the side wall of the drive shaft (11).

3. The detachable blade assembly according to claim 2, characterized in that, The drive shaft (11) has a drive rib (112) on its side wall, and the connecting hole (211) has a guide rib (2114) on its side wall. When the connecting sleeve (21) is upright, the guide rib (2114) and the drive rib (112) are engaged to connect the connecting sleeve (21) and the drive shaft (11). When the connecting sleeve (21) is inverted, the annular inner edge (2113) abuts against the drive rib (112) to restrict the engagement of the drive rib (112) and the guide rib (2114).

4. The detachable blade assembly according to claim 3, characterized in that, The guide rib (2114) is provided with a clearance channel (2115). When the connecting sleeve (21) is upright, the driving rib (112) passes through the clearance channel (2115) and engages with the guide rib (2114).

5. The detachable blade assembly according to claim 4, characterized in that, The guide rib (2114) is provided with a limiting hole (2116), the drive shaft (11) has a first shaft segment (111), and the drive rib (112) is provided on the first shaft segment (111); when the connecting sleeve (21) is upright, the limiting hole (2116) is sleeved on the first shaft segment (111).

6. The detachable blade assembly according to claim 5, characterized in that, Define the diameter of the first opening as D1, and define the total radial length of the driving rib (112) and the first shaft segment (111) as D2. Then D1 and D2 satisfy: D1 < D2.

7. The detachable blade assembly according to claim 6, characterized in that, Let the diameter of the limiting hole (2116) be D3, and the diameter of the second hole (2112) be D4. Then D1, D2, D3, and D4 satisfy: 4mm≦D3≦D1<D2≦D4≦8mm.

8. The detachable blade assembly according to claim 3, characterized in that, Two drive ribs (112) are provided, and the two drive ribs (112) are arranged opposite to each other on both sides of the drive shaft (11). The guide rib (2114) includes two oppositely arranged sub-guide ribs. When the connecting sleeve (21) is upright, the two drive ribs (112) are engaged with the two sub-guide ribs one by one.

9. The detachable blade assembly according to any one of claims 2-8, characterized in that, The annular inner edge (2113) protrudes from the outer surface of the connecting sleeve (21).

10. A food processing machine, characterized in that, Includes the detachable blade assembly as described in any one of claims 1-9.

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