Stirring knife assembly and food processor comprising same

Abstract

The utility model discloses a stirring knife assembly and a food processor comprising the same. The stirring knife assembly comprises a driving rod and a knife group; the driving rod comprises an anti-falling section and a driving section which are sequentially connected from top to bottom; the cutter set comprises a blade and a mounting sleeve, the blade is arranged on the mounting sleeve, the mounting sleeve is provided with a mounting hole and sleeves the driving section through the mounting hole, and at least part of the anti-falling section extends upwards out of the mounting hole. Thus, even if the mounting sleeve continues to rotate due to inertia after being separated from the transmission rib of the driving rod and tends to move upwards, due to the existence of the anti-falling section, the mounting sleeve can keep in contact with the anti-falling section and is limited by the anti-falling section when moving upwards, and the risk that the mounting sleeve and the blade on the mounting sleeve fly out of the driving rod can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to kitchen appliance technical field especially, it is food processor including stirring knife subassembly of it. BACKGROUND

[0002] In the existing stirring knife subassembly, although the protection mechanism has been designed to ensure that the knife group can be decoupled from the drive rod and stop high-speed rotation after being lifted to a certain height, but new safety hazards are still found in the actual user experience. Specifically, when the user places the food material first and then places the knife group, the knife group may not be placed correctly in place due to being pressed on the food material. Although the protection mechanism can theoretically prevent the knife group from high-speed rotation after being decoupled from the drive rod, but in actual test, it is found that the knife blade will continue to rotate due to inertia after the transmission tendon of the knife group is decoupled from the drive rod. At this time, if the drive rod contacts the guide slope in the mounting sleeve of the knife group under high-speed motion, an upward force will be generated, causing the knife group to be thrown upward at low speed, thereby causing danger. SUMMARY

[0003] In order to overcome at least one of the defects of the prior art described above, the utility model provides a stirring knife subassembly and a food processor comprising the same, which aims to ensure that the knife group cannot be decoupled from the drive rod when moving upward by increasing the design of the anti-dropping section, thereby avoiding the occurrence of safety hazards.

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

[0005] The stirring knife subassembly comprises: a drive rod comprising an anti-dropping section and a driving section connected in sequence from top to bottom; a knife group comprising a blade and a mounting sleeve, the blade being arranged in the mounting sleeve, the mounting sleeve being provided with a mounting hole, the mounting sleeve being sleeved on the driving section through the mounting hole, and the anti-dropping section at least partially protruding upward beyond the mounting hole.

[0006] According to some embodiments of the utility model, the side wall of the driving section is provided with a transmission tendon, the inner side wall of the mounting hole is provided with a connecting tendon, and the transmission tendon and the connecting tendon are clamped to connect the driving section and the mounting sleeve.

[0007] According to some embodiments of the utility model, the connecting tendon comprises a driving side and a guide slope, the transmission tendon and the driving side are clamped, the guide slope is located below the driving side, and the guide slope is inclined to the horizontal direction; the guide slope is used for sliding cooperation with the transmission tendon, and the guide slope is used for guiding the transmission tendon to move to a position in contact with the driving side.

[0008] According to some embodiments of the present application, the driving section is provided with a limiting ring, the limiting ring is located below the transmission rib, and the lower end of the mounting sleeve is abutted against the limiting ring.

[0009] According to some embodiments of the present application, the limiting ring is elastic.

[0010] According to some embodiments of the present application, the transmission rib is located at the upper end of the mounting hole, the anti-disengagement section is a part of the driving rod located above the transmission rib, the length of the anti-disengagement section is defined as L1, the total length of the driving rod is defined as L, and L1 and L satisfy: 1 / 5L≤L1≤1 / 2L.

[0011] According to some embodiments of the present application, 10mm≤L1≤15mm.

[0012] According to some embodiments of the present application, the driving section comprises a first shaft section and a second shaft section, the anti-disengagement section, the first shaft section and the second shaft section are sequentially connected from top to bottom, the transmission rib is arranged on the first shaft section, the diameter of the first shaft section is smaller than that of the second shaft section, the limiting ring is arranged at the lower end of the second shaft section, and the length of the second shaft section is defined as L2, and L2 satisfies: 15mm≤L2≤20mm.

[0013] According to some embodiments of the present application, the edge of the end of the anti-disengagement section away from the driving section is provided with a rounded corner.

[0014] In addition, the present application also provides a food processor comprising the stirring blade assembly.

[0015] In summary, the stirring blade assembly and the food processor comprising the same provided by the present application have at least the following technical effects:

[0016] Even if the mounting sleeve continues to rotate due to inertia and has a tendency to move upward after disengaging from the transmission rib of the driving rod, the mounting sleeve will be in contact with the anti-disengagement section and be limited by the anti-disengagement section when moving upward due to the existence of the anti-disengagement section, so that the risk of the mounting sleeve and the blade thereon flying off the driving rod can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 1 is a perspective view of a stirring blade assembly according to an embodiment of the present application;

[0018] Figure 2 FIG. 2 is a sectional view of the stirring blade assembly (when the transmission rib and the connecting rib are mutually clamped) according to the embodiment of the present application;

[0019] Figure 3 FIG. 3 is a sectional view of a blade disc and a driving rod according to the embodiment of the present application.

[0020] Figure 4 A cross-sectional structure schematic view of the knife set at a first viewing angle of an embodiment of the utility model;

[0021] Figure 5 A cross-sectional structure schematic view of the knife set at a second viewing angle of an embodiment of the utility model;

[0022] Figure 6 A cross-sectional structure schematic view of the stirring knife assembly (when the transmission rib and the connecting rib are disengaged) of an embodiment of the utility model;

[0023] Figure 7 A three-dimensional structure schematic view of the mounting sleeve of an embodiment of the utility model;

[0024] Figure 8 A three-dimensional structure schematic view of the driving rod of an embodiment of the utility model.

[0025] Among them, the meaning of the reference signs is as follows:

[0026] 1, driving rod; 11, anti-drop section; 12, driving section; 121, first shaft section; 122, second shaft section; 123, transmission rib; 2, knife set; 21, blade; 22, mounting sleeve; 221, mounting hole; 222, connecting rib; 2221, driving side; 2222, guide inclined surface; 2223, avoiding passage; 2224, limiting hole; 223, annular inner convex; 3, limiting ring; 4, cutter head. DETAILED DESCRIPTION

[0027] In order to better understand and implement, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model.

[0028] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0029] 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 the utility model belongs. The terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model.

[0030] The utility model will be further described in detail below in combination with the drawings.

[0031] Referring to Figures 1 to 8 The embodiment discloses a stirring blade assembly, comprising a driving rod 1 and a blade set 2; the driving rod 1 comprises a driving section 12 and an anti-disengagement section 11 connected in sequence from top to bottom; the blade set 2 comprises a blade 21 and a mounting sleeve 22, the blade 21 is arranged on the mounting sleeve 22, the mounting sleeve 22 is provided with a mounting hole 221, the mounting sleeve 22 is sleeved on the driving section 12 through the mounting hole 221, and the anti-disengagement section 11 at least partially exceeds the mounting hole 221 upward.

[0032] The stirring blade assembly provided by the embodiment can avoid the risk of the mounting sleeve 22 and the blade 21 on the mounting sleeve 22 flying off the driving rod 1, even if the mounting sleeve 22 continues to rotate and has a tendency to move upward due to inertia after the mounting sleeve 22 is disengaged from the driving rib 123 of the driving rod 1, because of the existence of the anti-disengagement section 11, the mounting sleeve 22 will be in contact with the anti-disengagement section 11 and be limited by the anti-disengagement section 11 when moving upward, as shown in Figure 6 .

[0033] Specifically, in the embodiment, the anti-disengagement section 11 and the driving section 12 can be integrally formed or connected through fasteners.

[0034] Specifically, in the embodiment, the mounting sleeve 22 is fixedly connected with the blade 21, the mounting hole 221 on the mounting sleeve 22 is matched in size with the driving section 12, and the driving section 12 is allowed to pass through. In normal use, the mounting sleeve 22 is sleeved on the driving section 12 and rotates under the driving of the driving section 12, thereby driving the blade 21 to rotate to cut food materials.

[0035] As shown in Figure 1 and Figure 2 , specifically, in the embodiment, the side wall of the driving section 12 is provided with a driving rib 123, the inner side wall of the mounting hole 221 is provided with a connecting rib 222, and the driving rib 123 and the connecting rib 222 are clamped to connect the driving section 12 and the mounting sleeve 22. In this way, on the one hand, the clamping structure of the driving rib 123 and the connecting rib 222 can effectively prevent the relative sliding or loosening between the driving section 12 and the mounting sleeve 22, thereby ensuring the stability and reliability of the transmission system; on the other hand, compared with the traditional connection mode, the clamping design of the driving rib 123 and the connecting rib 222 simplifies the assembly steps, reduces the assembly difficulty, improves the production efficiency, and when the parts need to be maintained or replaced, the clamping design of the driving rib 123 and the connecting rib 222 also makes the disassembly process simple and fast, thereby reducing the maintenance cost and time.

[0036] As shown in Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, preferably, in this embodiment, the connecting rib 222 includes a driving side surface 2221 and a guide slope 2222. The transmission rib 123 is engaged with the driving side surface 2221. The guide slope 2222 is located below the driving side surface 2221 and is inclined in the horizontal direction. The guide slope 2222 is used to slide with the transmission rib 123 and guides the transmission rib 123 to move to a position that contacts the driving side surface 2221. Thus, when the transmission rib 123 contacts the connecting rib 222, it will first contact the guide slope 2222. By rotating the mounting sleeve 22, due to the inclined design of the guide slope 2222, the transmission rib 123 will slide relative to the guide slope 2222 and gradually rise relative to the guide slope 2222 until it contacts the driving side 2221. Then, by rotating the mounting sleeve 22, the transmission rib 123 and the driving side 2221 can be locked together to connect the drive rod 1 and the mounting sleeve 22. This improves the stability of the fit between the connecting rib 222 and the transmission rib 123.

[0037] It is understandable that when the engagement between the transmission rib 123 and the connecting rib 222 is released, the mounting sleeve 22 and its blade 21, after losing driving force, will continue to rotate at a certain speed due to inertia. During this rotation, if the transmission rib 123 on the driving section 12 contacts the guide slope 2222 inside the mounting sleeve 22, the high-speed movement of the driving section 12 will generate an upward frictional or impact force on the guide slope 2222. This upward force will push the mounting sleeve 22 upward until it contacts the anti-detachment section 11. Figure 6 As shown, the anti-detachment section 11 can prevent the risk of the mounting sleeve 22 and the blade 21 on it flying off the drive rod 1.

[0038] like Figure 2 As shown, preferably, in this embodiment, the drive segment 12 is provided with a limiting ring 3, which is located below the transmission rib 123. The lower end of the mounting sleeve 22 abuts against the limiting ring 3. The limiting ring 3 is used to fix the relative position between the mounting sleeve 22 and the drive segment 12. Thus, on the one hand, the main function of the limiting ring 3 is to ensure that the relative position between the mounting sleeve 22 and the drive segment 12 remains accurate and stable. When the mounting sleeve 22 is subjected to various forces during rotation, the limiting ring 3 can provide a solid support point to prevent unnecessary displacement or shaking of the mounting sleeve 22, thereby maintaining the stability of the entire transmission system. On the other hand, by abutting the lower end of the mounting sleeve 22 against the limiting ring 3, the direct contact and friction between the mounting sleeve 22 and other components can be reduced. This helps to reduce the wear rate, extend the service life of the components, and reduce the heat and noise generated by friction.

[0039] More preferably, in the present embodiment, the limiting ring 3 is elastic. In this way, on the one hand, the elastic limiting ring 3 can absorb and disperse the vibration and impact force generated during the rotation of the mounting sleeve 22, effectively reducing the vibration and noise of the system, and this buffering effect not only improves the stability of the system, but also helps to prolong the service life of other components; on the other hand, under dynamic load or changing working conditions, the elastic limiting ring 3 can adaptively adjust its shape and position to maintain the close fit between the mounting sleeve 22 and the driving section 12. This adaptive ability enhances the flexibility and reliability of the system; on the other hand, the elastic material can reduce the friction between the limiting ring 3 and the mounting sleeve 22, thereby reducing the wear rate, which helps to prolong the service life of the limiting ring 3 and the mounting sleeve 22 in the long run, reducing maintenance costs; on the other hand, in some cases, such as installation errors or component wear, the elastic limiting ring 3 can compensate for these deviations to ensure that the system can still operate stably, and this fault tolerance improves the overall performance and reliability of the system, and the design of the elastic limiting ring 3 makes the installation process more convenient, because the operator can more easily adjust its position to adapt to different installation conditions.

[0040] As shown in Figure 2 , Figure 3 , Figure 4 , specifically, in the present embodiment, the transmission rib 123 is located at the upper end of the mounting hole 221, and the anti-disengagement section 11 is the part of the driving rod 1 located above the transmission rib 123; define the length of the anti-disengagement section 11 as L1, and define the total length of the driving rod 1 as L, preferably, L1 and L satisfy: 1 / 5L≤L1≤1 / 2L. In this way, on the one hand, by ensuring that L1 is within a certain proportion of the total length L, the safety of the system can be significantly improved, that is, even in the most severe working conditions, such as high-speed rotation and sudden unloading, the anti-disengagement section 11 can effectively prevent the mounting sleeve 22 from completely disengaging from the driving rod 1, thereby avoiding potential safety hazards; on the other hand, although increasing the length of the anti-disengagement section 11 can enhance the stability and safety of the system, an excessively long anti-disengagement section 11 can result in an overall structure that is not compact enough, therefore, limiting L1 to within 1 / 2 of L helps to maintain the compactness of the transmission system, facilitating installation and maintenance, achieving a balance between system stability, safety and structural compactness. This proportional relationship takes into account the actual needs of the transmission system, as well as manufacturing costs and overall performance.

[0041] As shown in Figure 2 , Figure 3 , Figure 4As shown, preferably, in the present embodiment, 10mm≤L1≤15mm. In this way, on the one hand, the length of the anti-disengagement section 11 of 10mm to 15mm is generally able to meet the practical application requirements of most transmission systems, and this length range is sufficient to resist the upward force caused by inertia, vibration or load changes, preventing the mounting sleeve 22 from accidentally disengaging from the drive rod 1; on the other hand, in the manufacturing process, the length of the anti-disengagement section 11 of 10mm to 15mm is relatively easy to control, which helps to ensure the consistency and reliability of the product, and in addition, this length range also makes the installation process more simple and fast, because the operator can more easily align and fix the components; on the other hand, by selecting this numerical range, the manufacturing cost can be controlled while maintaining system performance, a shorter anti-disengagement section 11 means less material and processing time, thereby reducing the overall cost, however, too short anti-disengagement section 11 may sacrifice performance, so it is necessary to find the best balance between cost and performance.

[0042] As shown in the drawings, Figure 2 , Figure 3 , Figure 4 Specifically, in the present embodiment, the drive section 12 includes a first shaft section 121 and a second shaft section 122, the anti-disengagement section 11, the first shaft section 121 and the second shaft section 122 are connected in order from top to bottom, the transmission rib 123 is arranged on the first shaft section 121, the diameter of the first shaft section 121 is smaller than the diameter of the second shaft section 122; the limiting ring 3 is arranged at the lower end of the second shaft section 122; in this way, the anti-disengagement section 11 is mainly used to prevent the mounting sleeve 22 from accidentally disengaging from the drive rod 1, ensuring the safety of the system, the first shaft section 121 is provided with the transmission rib 123, which is used to cooperate with the mounting sleeve 22 to realize the transmission of power, and the second shaft section 122 provides additional support and stability, and its diameter is larger than that of the first shaft section 121, which helps to enhance the strength and rigidity of the entire drive section 12.

[0043] As shown in the drawings, Figure 2 , Figure 3 , Figure 4As shown, the length of the second shaft segment 122 is defined as L2, preferably, L2 satisfies: 15mm≤L2≤20mm. In this way, on the one hand, the length L2 of the second shaft segment 122 is set in the range of 15mm to 20mm, which is based on the comprehensive consideration of system performance and structural compactness, shorter second shaft segment 122 can be more compact, but may sacrifice certain strength and stability, on the contrary, longer second shaft segment 122 provides better support and stability, but may increase the overall size and cost. Therefore, this range provides a reasonable compromise; on the other hand, the limiting ring 3 is arranged at the lower end of the second shaft segment 122, which helps to fix the relative position between the mounting sleeve 22 and the driving segment 12, preventing unnecessary displacement or shaking of the mounting sleeve 22 during rotation, at the same time, the limiting ring 3 also plays a role in buffering and shock absorption, which can absorb and disperse the vibration and energy generated by the mounting sleeve 22 when impacted; on the other hand, by reasonably setting the size and layout of each shaft segment, as well as selecting appropriate materials, the manufacturing cost can be controlled while maintaining system performance, the difference in diameter between the first shaft segment 121 and the second shaft segment 122 and the length of the second shaft segment 122 are set to maximize cost-effectiveness while meeting performance requirements.

[0044] As shown in Figure 2 , Figure 3 , Figure 4 and Figure 7 , preferably, in the present embodiment, the connecting rib 222 is provided with a limiting hole 2224, which is sleeved on the first shaft segment 121, this design ensures the accurate alignment and stable connection between the connecting rib 222 and the first shaft segment 121; the diameter of the limiting hole 2224 is defined as D1, and the diameter of the first shaft segment 121 is defined as D2, preferably, D1 and D2 satisfy: 0.3mm≦D2-D1≦1mm; in this way, the fitting clearance (D2-D1) is set in the range of 0.3mm to 1mm, the selection of this range is based on the comprehensive consideration of system stability, assembly convenience and cost-effectiveness, smaller fitting clearance can provide better stability and precision, but may increase the assembly difficulty and cost, on the contrary, larger fitting clearance although facilitates assembly, but may sacrifice certain stability and precision, therefore, this range provides a reasonable compromise.

[0045] As shown in Figure 3 and Figure 8As shown, preferably, in the present embodiment set, the anti-escape section 11 is provided with a rounded corner at the edge of the end away from the driving section 12. In this way, on the one hand, the rounded corner design is mainly used to reduce stress concentration, improve the strength and durability of the component, and the setting of the rounded corner at the edge of the end of the anti-escape section 11 away from the driving section 12 can significantly reduce the stress concentration phenomenon generated in this area when subjected to external force, thereby prolonging the service life of the component; on the other hand, in some application scenarios, the anti-escape section 11 may come into direct contact with the user's body or other objects. The rounded corner design can reduce the risk of scratches or collisions that may be caused by sharp edges, thereby enhancing the safety of the product.

[0046] As shown in Figure 2 , Figure 4 , Figure 5 Specifically, the mounting hole 221 has a first end and a second end in communication, and preferably, the inner side wall of the first end is provided with an annular inner protrusion 223, and the annular inner protrusion 223 is formed with a first opening of the mounting hole 221, and the hole diameter of the first opening is smaller than the hole diameter of the second end; wherein, when the mounting sleeve 22 is right, the first end is located above the second end, and the mounting sleeve 22 is sleeved on the driving section 12 through the mounting hole 221 to be drivingly connected with the driving section 12; when the mounting sleeve 22 is inverted, the first end is located below the second end, and the annular inner protrusion 223 abuts against the driving rib 123 of the driving section 12 to limit the driving connection between the mounting sleeve 22 and the driving section 12. In this way, when the mounting sleeve 22 is mistakenly inverted and tried to be installed on the driving section 12, the first opening of the annular inner protrusion 223 will first contact the driving rib 123 of the driving section 12 due to its smaller hole diameter, and this design physically prevents the mounting sleeve 22 from further sliding along the driving section 12, thereby effectively preventing the knife blade 21 assembly from being drivingly connected with the driving section 12 in the inverted state. This safety mechanism greatly reduces the safety risk caused by user's misoperation, and the contact between the annular inner protrusion 223 and the driving rib 123 provides intuitive feedback to the user, so that the user can immediately identify whether the mounting sleeve 22 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 need to modify the driving section 12, maintaining the compatibility with the existing driving section 12, so that the detachable knife assembly 2 can be widely applied to various kitchen utensils, improving the universality and market adaptability of the product.

[0047] As shown in Figure 7As shown, preferably, in the present embodiment, the connecting rib 222 is provided with an avoiding passage 2223, when the mounting sleeve 22 is upright, the transmission rib 123 passes through the avoiding passage 2223 and is clamped with the connecting rib 222, specifically, after the transmission rib 123 passes through the avoiding passage 2223, the transmission rib 123 and the connecting rib 222 can be clamped by rotating the mounting sleeve 22 by a certain angle; in this way, on the one hand, the design of the avoiding passage 2223 enables the mounting sleeve 22 to smoothly slide through the driving section 12 during installation until the transmission rib 123 reaches the predetermined position, which avoids the risk of installation difficulty or damage caused by the direct collision between the transmission rib 123 and the connecting rib 222 in the traditional design, greatly simplifies the installation steps and improves the installation efficiency; on the other hand, the design of the avoiding passage 2223 enables the mounting sleeve 22 to smoothly slide through the driving section 12 during installation until the transmission rib 123 reaches the predetermined position, which avoids the risk of installation difficulty or damage caused by the direct collision between the transmission rib 123 and the connecting rib 222 in the traditional design, greatly simplifies the installation steps and improves the installation efficiency; on the other hand, by providing the avoiding passage 2223, unnecessary friction and collision between the transmission rib 123 and the connecting rib 222 during installation is reduced, which prolongs the service life of the product, this design helps to maintain the integrity of the transmission rib 123 and the connecting rib 222, reduces the risk of performance decline or failure caused by long-term wear and tear; on the other hand, although the design of the avoiding passage 2223 is added, the present embodiment still maintains the compactness of the structure of the mounting sleeve 22 and the driving section 12, which helps to reduce the volume and weight of the entire detachable knife assembly 2, making it more convenient to carry and store, while maintaining excellent transmission performance and stability.

[0048] As shown, specifically, in the present embodiment, the stirring knife assembly further comprises a knife disc 4, and the driving section 12 is arranged on the knife disc 4. Figure 2

[0049] In addition, the present embodiment also provides a food processor comprising the stirring knife assembly as described above, which has all the advantages of the stirring knife assembly described above, and will not be repeated here.

[0050] In summary, the stirring knife assembly disclosed by the present utility model and the food processor comprising the same can at least bring the following beneficial technical effects:

[0051] 1) Even if the mounting sleeve 22 continues to rotate due to inertia after separating from the transmission rib 123 of the driving rod 1 and tends to move upward, since the anti-disengagement section 11 is present, the mounting sleeve 22 will be in contact with and limited by the anti-disengagement section 11 when moving upward, which can avoid the risk of the mounting sleeve 22 and the blade 21 thereon flying off the driving rod 1;

[0052] ​2) By ensuring that L1 is within a certain proportion of the total length L, the safety of the system can be significantly improved, even in the most adverse working conditions, such as high-speed rotation and sudden unloading, the anti-disengagement section 11 can effectively prevent the mounting sleeve 22 from completely disengaging from the drive rod 1, thereby avoiding potential safety hazards;

[0053] 3) When the mounting sleeve 22 is subjected to various forces during rotation, the limiting ring 3 can provide a solid support point to prevent unnecessary displacement or shaking of the mounting sleeve 22, thereby maintaining the stability of the entire transmission system;

[0054] 4) By abutting the lower end of the mounting sleeve 22 against the limiting ring 3, direct contact and friction between the mounting sleeve 22 and other components can be reduced, which helps to reduce wear and tear, prolong the service life of the components, and reduce heat and noise generated by friction.

[0055] The technical means disclosed in the utility model scheme is not limited to the technical means disclosed in the above-mentioned embodiments, but also includes technical solutions composed of any combination of the above technical features. It should be noted that for ordinary skilled persons in the art, without departing from the principles of the utility model, a number of improvements and refinements can be made, and these improvements and refinements are also considered within the protection scope of the utility model.

Claims

1. A stirring blade assembly, characterized in that, include: The drive rod (1) includes an anti-detachment section (11) and a drive section (12) connected sequentially from top to bottom; The blade assembly (2) includes a blade (21) and a mounting sleeve (22). The blade (21) is disposed on the mounting sleeve (22). The mounting sleeve (22) is provided with a mounting hole (221). The mounting sleeve (22) is fitted onto the drive section (12) through the mounting hole (221). The anti-detachment section (11) extends upward beyond the mounting hole (221) at least partially.

2. The stirring blade assembly according to claim 1, characterized in that, The drive section (12) has a transmission rib (123) on its side wall and a connecting rib (222) on the inner side wall of the mounting hole (221). The transmission rib (123) and the connecting rib (222) are engaged to connect the drive section (12) and the mounting sleeve (22).

3. The stirring blade assembly according to claim 2, characterized in that, The connecting rib (222) includes a driving side (2221) and a guide slope (2222). The transmission rib (123) is engaged with the driving side (2221). The guide slope (2222) is located below the driving side (2221) and is inclined in the horizontal direction. The guide slope (2222) is used to slide with the transmission rib (123), and the guide slope (2222) is used to guide the transmission rib (123) to move to a position that contacts the driving side surface (2221).

4. The stirring blade assembly according to claim 2, characterized in that, The drive section (12) is provided with a limit ring (3), which is located below the transmission rib (123), and the lower end of the mounting sleeve (22) abuts against the limit ring (3).

5. The stirring blade assembly according to claim 4, characterized in that, The limiting ring (3) is elastic.

6. The stirring blade assembly according to claim 4, characterized in that, The transmission rib (123) is located at the upper end of the mounting hole (221), and the anti-detachment section (11) is the part of the drive rod (1) located above the transmission rib (123); The length of the anti-detachment section (11) is defined as L1, and the total length of the drive rod (1) is defined as L. Then L1 and L satisfy: 1 / 5L≤L1≤1 / 2L.

7. The stirring blade assembly according to claim 6, characterized in that, 10mm≤L1≤15mm.

8. The stirring blade assembly according to claim 7, characterized in that, The drive section (12) includes a first shaft section (121) and a second shaft section (122). The anti-detachment section (11), the first shaft section (121) and the second shaft section (122) are connected sequentially from top to bottom. The transmission rib (123) is disposed on the first shaft section (121). The diameter of the first shaft section (121) is smaller than the diameter of the second shaft section (122). The limiting ring (3) is disposed at the lower end of the second shaft section (122). Define the length of the second shaft segment (122) as L2, then L2 satisfies: 15mm≤L2≤20mm.

9. The stirring blade assembly according to any one of claims 1-8, characterized in that, The edge of the anti-detachment section (11) away from the drive section (12) is provided with a rounded corner.

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

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