Stirring knife assembly and food processor

Abstract

The utility model discloses a stirring knife assembly and a food processor. The stirring cutter assembly comprises a cutter shaft and a cutter assembly. The cutter shaft comprises an assembling section which deflects in the circumferential direction, and the area of the radial section of the assembling section is downwards increased in the axial direction of the cutter shaft. The cutter assembly and the assembling section are detachably arranged in a penetrating mode, and the cutter assembly synchronously rotates along with the cutter shaft. Due to the fact that the assembling section deflects in the circumferential direction and the area of the radial cross section of the assembling section is increased towards the cutter head in the axial direction of the cutter shaft, in the process of assembling the cutter assembly, the insertion gap between the cutter assembly and the cutter shaft becomes small, the process of disassembling the cutter assembly is opposite to the process of disassembling the cutter assembly, the cutter assembly is convenient and easy to assemble, and production efficiency is improved. And the assembling section which deflects in the circumferential direction and has the section area increased towards the cutter head is matched with the cutter assembly, so that the cutter assembly can be prevented from being disengaged. In addition, after the cutter assembly is assembled in place, the gap between the cutter assembly and the assembly section is the smallest, and the situation that various impurities exist between the cutter assembly and the cutter shaft, and the cutter assembly and the cutter shaft are bonded and difficult to disassemble is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of small household appliances, and in particular to a blender blade assembly and a food processor. Background Art

[0002] The food processor comprises a main machine and a mixing cup assembly. The mixing cup assembly comprises a mixing cup and a mixing blade assembly. The main machine comprises a driving device. The driving device drives the blade assembly of the mixing blade assembly to rotate in the mixing cup to process food.

[0003] After the mixing blade assembly processes food, food residues will remain. Therefore, the blade assembly or the mixing cup assembly needs to be cleaned. However, the blade assembly of the mixing blade assembly of the current food processor is inconvenient to disassemble and assemble. Utility Model Content

[0004] The purpose of the present application is to disclose a stirring knife assembly and a food processor. The knife assembly of the stirring knife assembly is convenient and easy to assemble and disassemble.

[0005] In a first aspect, the present application discloses a stirring blade assembly, wherein the stirring blade assembly comprises a blade shaft and a blade assembly, wherein the blade shaft comprises a circumferentially deflected assembly section, the radial cross-section area of ​​the assembly section increases downward along the axial direction of the blade shaft, and the blade assembly is detachably inserted into the assembly section and rotates synchronously with the blade shaft.

[0006] As described above, since the assembly section is circumferentially deflected and the area of ​​the radial cross section of the assembly section increases along the axial direction of the knife shaft toward the knife disc, during the process of assembling the knife assembly, the insertion gap between the knife assembly and the knife shaft changes from large to small. Therefore, it is convenient and easy to assemble the knife assembly. For example, because the insertion gap is large, there is no need to consider the alignment between the knife assembly and the knife shaft, making it convenient and easy to assemble the knife assembly. The process of disassembling the knife assembly is the opposite. Therefore, the disassembly and assembly of the knife assembly is convenient and easy. In addition, since the assembly section is circumferentially deflected and the area of ​​the radial cross section of the assembly section increases along the axial direction of the knife shaft toward the knife disc, when the knife assembly is assembled in place, the gap between the knife assembly and the assembly section is the smallest. The small gap makes it difficult for food residues and other impurities to hide between the knife assembly and the knife shaft, thereby avoiding various impurities between the knife assembly and the knife shaft that stick together and are difficult to disassemble. In addition, since the assembly section deflects circumferentially and the area of ​​the radial cross section of the assembly section gradually increases along the axial direction of the blade shaft toward the blade disc, during the rotation of the mixing blade assembly, the assembly section will apply a downward force to the blade assembly to prevent the blade assembly from falling out. The greater the rotation speed of the mixing blade assembly, the less likely the blade assembly will fall out. Finally, in the above mixing blade assembly, only the blade assembly and the blade shaft need to be disassembled, and the blade disc does not need to be disassembled from the mixing cup assembly, and the sealing structure between the blade disc and the mixing cup assembly does not need to be destroyed. Therefore, the sealing performance between the mixing blade assembly and the mixing cup will not be affected.

[0007] In some embodiments, along the axial direction of the knife shaft, the area of ​​the radial cross-section of the assembly section gradually increases to achieve the increase, or, along the axial direction of the knife shaft, the increase amplitude of the radial cross-section of the assembly section is different to achieve the increase.

[0008] As set up as above, since the area of ​​the radial cross-section of the assembly section gradually increases along the axial direction of the knife shaft, or the radial cross-section of the assembly section increases at different rates along the axial direction of the knife shaft to achieve the increase, the knife assembly can be easily and conveniently disassembled and assembled, and various impurities between the knife assembly and the knife shaft can be avoided, which may cause adhesion and difficulty in disassembly.

[0009] In some embodiments, when the area of ​​the radial cross section of the assembly segment gradually increases, the taper angle of the assembly segment is a, 0 degrees < α ≤ 20 degrees.

[0010] As set above, α represents the steepness of the cone of the entire assembly section. The larger the value, the flatter the side wall, the easier it is to disassemble and assemble, and it is not easy to get stuck. The smaller the value, the steeper the side wall, the closer the shape and size of the upper and lower end faces, the more difficult it is to disassemble and assemble, and it is easy to get stuck. Therefore, 0 degrees < α ≤ 20 degrees ensures that the knife assembly is convenient and easy to disassemble and assemble.

[0011] In some embodiments, a radial cross-section of the assembly segment is polygonal.

[0012] As described above, since the radial cross section of the assembly section is polygonal, the adjacent sides of the polygon form a blocking structure, which facilitates the synchronous rotation of the knife assembly and the knife shaft. In addition, the radial cross section of the knife assembly along the assembly section is polygonal, and the knife assembly moves along the side of the assembly section to achieve disassembly and assembly with the knife shaft, making it more convenient and easy to disassemble and assemble the knife assembly.

[0013] In some embodiments, the side surface of the assembly segment is a helical surface rotating around the rotation center line of the knife shaft to achieve the deflection, and / or the polygon is a regular polygon.

[0014] As described above, since the side surface is a spiral surface, the spiral surface combined with the area of ​​the radial cross section of the assembly section gradually increases along the axial direction of the knife shaft toward the knife disc, and can exert a downward pressure on the knife assembly, so that the knife assembly will not move and / or escape from the knife shaft during the synchronous rotation of the knife shaft. Combined with the radial cross section of the assembly section being a polygon, it can also prevent the knife assembly from rotating relative to the knife shaft. In the case where the polygon is a regular polygon, the side surface of the assembly section is evenly distributed in the circumference of the knife shaft, so that the knife assembly is evenly stressed in the circumference of the knife shaft, which is beneficial to increase the life of the knife assembly and the knife shaft.

[0015] In some embodiments, the helix angle of the helical surface is β, and 0 degrees < β ≤ 30 degrees.

[0016] As set above, β represents the inclination degree of the spiral surface. The larger it is, the more inclined it is relative to the vertical surface. The greater the downward restraining force on the knife assembly during operation, the more difficult the knife assembly is to detach. The smaller the knife assembly, the smaller the restraining force, and the easier it is to detach. Therefore, 0 degrees < β ≤ 30 degrees ensures that the knife assembly is easy to disassemble and the knife assembly is not easy to detach.

[0017] In some embodiments, the assembly section satisfies at least one of the following conditions:

[0018] a) The axial height of the assembly section along the knife shaft is h, 4mm≤h≤30mm; as set above, h represents the depth of the knife assembly and the assembly section of the knife shaft. The larger the depth, the larger the matching surface, the less likely the knife assembly is to jump, and the stronger the constraint of the knife shaft on the knife assembly. Therefore, 4mm≤h≤30mm ensures that the knife assembly is easy to disassemble and assemble and that the knife assembly works stably and reliably.

[0019] b) The top of the assembly section corresponds to a diameter of d1, and the bottom corresponds to a diameter of d2, d2 = d1 + △d, 0 < △d ≤ 3mm, 5mm ≤ d1 ≤ 8mm. As set above, d1 and d2 satisfy the above relationship, which can ensure that the assembly section is not very steep, and the knife assembly is convenient and easy to disassemble.

[0020] In some embodiments, the knife assembly includes a knife shaft sleeve, and the knife shaft sleeve includes a sleeve hole that penetrates the assembly section and is clearance-matched with the sleeve hole, and the shape of the cross section of the sleeve hole is the same as the shape of the radial cross section of the assembly section.

[0021] In some embodiments, the knife assembly includes a knife shaft sleeve, a fixing nut and a blade, the knife shaft sleeve and the fixing nut are both penetrated through the assembly section of the knife shaft, and the knife shaft sleeve and the fixing nut are threadedly connected and clamp the blade.

[0022] In a second aspect, the embodiments of the present application disclose a food processor, which comprises any one of the aforementioned stirring blade assemblies, a stirring cup, and a driving device, wherein the driving device drives the blade assembly to rotate in the stirring cup. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of a food processor shown in an embodiment of the present application;

[0024] Figure 2 is a cross-sectional view of a blending cup assembly shown in an embodiment of the present application;

[0025] Figure 3 is a stereoscopic diagram of a stirring blade assembly shown in an embodiment of the present application;

[0026] Figure 4 yes Figure 3An exploded view of the mixing blade assembly is shown;

[0027] Figure 5 yes Figure 3 A top view of the mixing blade assembly is shown;

[0028] Figure 6 is along Figure 5 Sectional view along line AA;

[0029] Figure 7 is a perspective view of a knife assembly shown in an embodiment of the present application;

[0030] Figure 8 yes Figure 7 A top view of the knife assembly is shown;

[0031] Fig. 9 is along Figure 8 Sectional view along the midline BB;

[0032] Fig.10 is a three-dimensional view of a knife shaft sleeve shown in an embodiment of the present application;

[0033] Fig.11 is a top view of a knife shaft sleeve shown in an embodiment of the present application;

[0034] Fig.12 is along Fig.11 Sectional view along line EE;

[0035] Fig.13 is a schematic diagram of a knife shaft shown in an embodiment of the present application;

[0036] Fig.14 yes Fig.13 The front view of the knife shaft is shown;

[0037] Fig.15 is along Fig.14 Sectional view of the mid-CC line;

[0038] Fig.16 is along Fig.14 Sectional view along line DD. DETAILED DESCRIPTION

[0039] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices consistent with some aspects of the present application as detailed in the appended claims.

[0040] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantitative limit, but indicate that there is at least one. "Multiple" or "several" means two or more. Unless otherwise specified, words such as "front", "rear", "lower" and / or "upper" are only for the convenience of explanation and are not limited to one position or one spatial orientation. Words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect. The singular forms "a", "said" and "the" used in this specification and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0041] See also Figure 6 Combined with Figure 3 , Figure 4 , Figure 2 and Figure 5 In the first aspect, the embodiment of the present application discloses a mixing blade assembly 10. The mixing blade assembly 10 includes a blade disc 1, a blade shaft 2, and a blade assembly 3. The blade shaft 2 is rotatably assembled to the blade disc 1, and includes a circumferentially deflected assembly section 21. The circumferential deflection is not limited to the method described below. There are many embodiments of how to rotatably assemble, for example, see Figure 6 , Figure 4 and Figure 3 The cutter head 1 is provided with a bearing seat 11, and a bearing assembly 12 is assembled in the bearing seat 11. The cutter shaft 2 is assembled with the bearing assembly 12 to realize the rotation assembly. Figure 6 , Fig.13 and Fig.14, the assembly section 21 is divided according to the object assembled with the blade shaft 2, and here refers to a section assembled with the blade assembly 3. Based on this division idea, the blade shaft 2 also includes a bearing assembly section 22 assembled with the bearing assembly 12 and a clutch assembly section 23 assembled with the clutch 9. In the present application, the stirring blade assembly 10 is connected to the driving device through a clutch, so the blade shaft 2 is rotationally connected to the blade disc 1. In some embodiments, for example, when the blade assembly 3 is driven by the driving device through magnetic force, the stirring blade assembly 10 may not include the blade disc 1. When in use, the stirring blade assembly 10 is fixed to the blade disc 1 through magnetic force or other means, and the blade shaft 2 is not rotationally connected to the blade disc 1.

[0042] See also Figure 4 , Figure 6 , Fig.13 and Fig.14 The area of ​​the radial cross section of the assembly section 21 increases downward along the axial direction of the cutter shaft 2, and in the figure, it increases downward toward the cutter disc 1. Figure 4 and Figure 6 As shown, the direction toward the blade disc 1 is vertically downward, as shown by arrow F. Of course, depending on the position of the stirring blade assembly 10, it may not be vertically downward. How to increase is not limited to the implementation method described later, as long as the effect described later can be achieved. The assembly section 21 of the blade assembly 3 and the blade shaft 2 is detachably arranged and rotates synchronously with the blade shaft 2. How to rotate synchronously is not limited. For example, a flat position structure is provided between the blade assembly 3 and the blade shaft 2. Under the action of the flat position structure, the blade assembly 3 and the blade shaft 2 will not rotate relative to each other, thereby achieving synchronous rotation.

[0043] As described above, since the assembly section 21 deflects circumferentially and the area of ​​the radial cross section of the assembly section 21 increases along the axial direction of the blade shaft 2 toward the blade disc 1, during the process of assembling the blade assembly 3, the insertion gap between the blade assembly 3 and the blade shaft 2 is reduced from large to small, so it is convenient and easy to assemble the blade assembly 3. For example, since the insertion gap is large, it is not necessary to consider the alignment between the blade assembly 3 and the blade shaft 2, which makes it convenient and easy to assemble the blade assembly 3. The process of disassembling the blade assembly is the opposite, so the disassembly and assembly of the blade assembly 3 is convenient and easy. In addition, since the assembly section 21 deflects circumferentially and the area of ​​the radial cross section of the assembly section 21 increases along the axial direction of the blade shaft 2 toward the blade disc 1, when the blade assembly 3 is assembled in place, the gap between the blade assembly 3 (such as the subsequent blade shaft sleeve 31) and the assembly section 21 is the smallest. The small gap makes it difficult for food residues and other impurities to hide between the blade assembly 3 and the blade shaft 2, and avoids various impurities between the blade assembly 3 and the blade shaft 2 and adhesion and difficulty in disassembly. In addition, since the assembly section 21 deflects circumferentially and the area of ​​the radial cross section of the assembly section 21 gradually increases along the axial direction of the blade shaft 2 toward the blade disc 1, during the rotation of the mixing blade assembly 10, the assembly section 21 will apply a downward force to the blade assembly 3 to prevent the blade assembly 3 from coming out. Generally, the higher the rotation speed of the mixing blade assembly 10, the less likely the blade assembly 3 will come out. Finally, in the above mixing blade assembly, only the blade assembly 3 is disassembled from the blade shaft 2, and the blade disc does not need to be disassembled from the mixing cup assembly, and the sealing structure between the blade disc and the mixing cup assembly does not need to be destroyed, so the sealing performance between the mixing blade assembly and the mixing cup will not be affected.

[0044] The radial cross section of the assembly section 21 should be understood as the cross section obtained along the radial or horizontal plane of the knife shaft 2. The area of ​​the cross section can also increase downward along the axial direction of the knife shaft 2 in the following manner: the assembly section 21 can also be generally truncated cone-shaped, but in order to prevent the knife assembly 3 from rotating relative to the assembly section 21, a rotation-stopping structure needs to be set between the two, for example, a blocking rib is set on the side of the truncated cone, and based on the blocking effect of the blocking rib, the knife assembly 3 will not rotate relative to the knife shaft 2, but can only rotate synchronously with the knife shaft 2. It is also possible that a guide groove is set on the assembly section 21. In this case, the area of ​​the radial cross section of the assembly section is still increased as mentioned above, and accordingly, the knife assembly 3 is provided with a convex point that matches the guide groove.

[0045] See also Figure 6 Combined with Figure 4 , Fig.13 and Fig.14, the area of ​​the radial cross section of the assembly segment 21 gradually increases. The gradual increase can be understood as the same increase. Based on the effect of the increase in the area of ​​the radial cross section of the aforementioned assembly segment 21, as a variation of this embodiment, the increase can also be: within the unit length range along the axial direction of the cutter shaft 2, the increase in the radial cross section of the assembly segment 21 is different to achieve the increase, for example, along the direction of the cutter shaft 2 toward the cutter disc 1, the increase in the front half of the assembly segment 21 is smaller than that in the rear half, or the increase in the front half is larger than that in the rear half, and so on. However, no matter what the increase is in either case, the area of ​​the radial cross section of the assembly segment 21 is ultimately increased.

[0046] As set up as above, since the area of ​​the radial cross-section of the assembly section 21 gradually increases along the axial direction of the knife shaft 2, or the increase amplitude of the radial cross-section of the assembly section 21 along the axial direction of the knife shaft 2 is different to achieve the increase, the knife assembly 3 can be disassembled and assembled conveniently and easily, and various impurities between the knife assembly 3 and the knife shaft 2 can be avoided, which makes it difficult to disassemble due to adhesion.

[0047] See also Fig.14 , when the area of ​​the radial cross section of the assembly section 21 gradually increases, the taper angle of the assembly section 21 is a, 0 degrees < α ≤ 20 degrees. For example, 1 degree, 2 degrees, 3 degrees, 4 degrees, 5 degrees, 6 degrees, 7 degrees, 8 degrees, 9 degrees, 10 degrees, 11 degrees, 12 degrees, 13 degrees, 14 degrees, 15 degrees, 16 degrees, 17 degrees, 18 degrees, 19 degrees or 20 degrees.

[0048] As set above, α represents the tapered steepness of the entire assembly section 21 (a spiral section in a subsequent embodiment). The larger it is, the flatter the side wall is, the easier it is to disassemble and assemble, and it is not easy to get stuck. The smaller it is, the steeper the side wall is, the closer the shape and size of the upper and lower end faces are, the more difficult it is to disassemble and assemble, and it is easy to get stuck. Therefore, 0 degrees < α ≤ 20 degrees ensures that the knife assembly 3 is easy and convenient to disassemble and assemble.

[0049] See also Fig.15 and Fig.16 Combined with Fig.13 and Fig.14 , the assembly section 21 is a prism, so that the radial cross section of the assembly section 21 is a polygon. The polygon is not limited to a regular polygon as shown in the figure. When the radial cross section is a regular polygon, the assembly section is a regular prism (the side of the assembly section 21 is a plane), or a shape as described later (the side of the assembly section 21 is a spiral surface). Fig.15 and Fig.16 The radial cross section is shown as a regular hexagon, and technicians can understand that the number of sides of the regular polygon is not limited.

[0050] As described above, since the radial cross section of the assembly section 21 is polygonal, the adjacent sides of the polygon form a blocking structure, so that it is easy to realize the synchronous rotation of the knife assembly 3 and the knife shaft 2. In addition, the radial cross section of the knife assembly 3 along the assembly section 21 is polygonal, and the knife assembly 3 moves along the side of the assembly section 21 to realize disassembly and assembly with the knife shaft 2, making it more convenient and easy to disassemble and assemble the knife assembly 3.

[0051] When the polygon is a regular polygon, the side surface 211 of the assembly section 21 is evenly distributed in the circumferential direction of the knife shaft 2. In this way, the knife assembly 3 is evenly stressed in the circumferential direction of the knife shaft 2, which is beneficial to improving the service life of the knife assembly 3 and the knife shaft 2.

[0052] See also Fig.13 , Fig.14 and Figure 4 Combined with Fig.15 and Fig.16 The side surface 211 of the assembly section 21 is a spiral surface rotating around the rotation center line of the knife shaft 2 to achieve the deflection.

[0053] As set up above, since the side surface 211 is a helical surface, the area of ​​the radial cross-section of the helical surface combined with the assembly section 21 gradually increases along the axial direction of the knife shaft 2 toward the knife disc 1, so that the knife assembly 3 will not move and / or escape from the knife shaft 2 during the synchronous rotation with the knife shaft 2. Combined with the radial cross-section of the assembly section 21 being a polygon, the knife assembly 3 can also be prevented from rotating relative to the knife shaft 2.

[0054] See also Fig.14 Combined with Fig.13 and Figure 4 The helix angle of the helical surface is β, 0 degrees < β ≤ 30 degrees. For example, 1 degree, 3 degrees, 5 degrees, 6 degrees, 7 degrees, 8 degrees, 10 degrees, 12 degrees, 13 degrees, 15 degrees, 18 degrees, 20 degrees, 23 degrees, 24 degrees, 25 degrees, 27 degrees, 28 degrees or 30 degrees.

[0055] As set above, β represents the inclination degree of the spiral surface. The larger it is, the more inclined it is relative to the vertical surface. The greater the downward restraining force on the knife assembly 3 during operation, the more difficult the knife assembly 3 is to detach. The smaller the knife assembly 3 is, the smaller the restraining force is, and the easier it is to detach. Therefore, 0 degrees < β ≤ 30 degrees ensures that the knife assembly 3 is easy to disassemble and assemble, and the knife assembly 3 is not easy to detach.

[0056] See also Fig.14 , the assembly section 21 satisfies at least one of the following conditions:

[0057] a) The axial height of the assembly section 21 along the knife shaft 2 is h, 4mm≤h≤30mm, for example, 4mm, 6mm, 8mm, 10mm, 12mm, 13mm, 15mm, 18mm, 20mm, 22mm, 23mm, 25mm, 27mm, 28mm or 30mm. As set above, h represents the depth of the knife assembly 3 and the assembly section 21 of the knife shaft 2. The larger the depth, the larger the matching surface, the less likely the knife assembly 3 is to jump, and the stronger the constraint of the knife shaft 2 on the knife assembly 3. Therefore, 4mm≤h≤30mm ensures that the knife assembly 3 is easy to disassemble and assemble and that the knife assembly 3 works stably and reliably.

[0058] b) The top of the assembly section 21 corresponds to a diameter of d1, and the bottom corresponds to a diameter of d2, d2 = d1 + Δd, 0 < Δd ≤ 3mm, 5mm ≤ d1 ≤ 8mm. As set above, d1 and d2 satisfy the above relationship, which can ensure that the assembly section 21 is not very steep, and the knife assembly 3 is convenient and easy to disassemble.

[0059] See also Fig.10 , Fig.11 and Fig.12 Combined with Figure 7 , Figure 8 and Fig. 9 The knife assembly 3 includes a knife shaft sleeve 31, and the knife shaft sleeve 31 includes a sleeve hole 311 that penetrates and is clearance-matched with the assembly section 21 of the knife shaft 2, and the cross-sectional shape of the sleeve hole 311 is the same as the radial cross-sectional shape of the assembly section 21. Fig.10 , Fig.11 , Fig.15 and Fig.16 Of course, when the side surface 211 of the assembly section 21 is a spiral surface, see Fig.10 and Fig.12 , the hole wall 310 of the sleeve hole 311 is also a spiral wall. Of course, the shape of the cross section of the sleeve hole 311 is the same as the radial cross section of the assembly section 21, and their number of sides is also equal (for example, both are six sides), but only from the perspective of the assembly of the knife assembly 3 and the assembly section 21 and the synchronous rotation of the knife assembly 3 and the knife shaft 2, the number of sides may not be equal, for example, the radial cross section of the assembly section 21 is six sides, while the cross section of the sleeve hole 311 is five sides, etc. The clearance of the clearance fit can be determined according to the situation, for example, the fit clearance is 0-0.5mm, because according to the principle of large hole and small shaft, if the hole is too large, it will cause frequent collisions between the knife assembly 3 and the knife shaft 2 during operation, resulting in wear of the knife shaft 2 or the matching part of the knife assembly 3, affecting its use.

[0060] As described above, since the cross-sectional shape of the sleeve hole 311 is the same as the radial cross-sectional shape of the assembly section 21, it is not only ensured that the knife assembly 3 and the knife shaft 2 are conveniently assembled and disassembled, and the service life of the knife assembly 3 and the knife shaft 2 is improved. Also, because of the same shape, the gap between the knife shaft sleeve 31 and the knife shaft 2 is small (that is, the gap between the knife assembly 3 and the knife shaft 2 is small), and it is not easy to hide impurities, etc., and the knife assembly 3 and the knife shaft 2 will not be stuck together and difficult to disassemble due to various impurities between them.

[0061] See also Figure 4 , Figure 6 and Fig. 9 Combined with Figure 3 , Figure 5 , Figure 7 and Figure 8 The knife assembly 3 includes a knife shaft sleeve 31, a fixing nut 32 and a blade 33. The knife shaft sleeve 31 and the fixing nut 32 are both penetrated by the assembly section 21 of the knife shaft, and the knife shaft sleeve 31 and the fixing nut 32 are threadedly connected and clamp the blade 33.

[0062] As described above, the knife shaft sleeve 31 can be assembled with the assembly section 21 first, and then the blade 33 can be inserted with the assembly section 21, and finally, the fixing nut 32 can be inserted with the assembly section 21 and tightened with the knife shaft sleeve 31. The disassembly process of the knife assembly 3 is the opposite. This design is combined with the radial cross-sectional area of ​​the assembly section 21 decreasing toward the cutter disc 1, the knife shaft sleeve 31 and the blade 33 both move from the small end to the large end, and the fixing nut 32 is inserted with the assembly section 21, so the disassembly and assembly of the knife assembly 3 is more convenient.

[0063] See also Figure 1 and Figure 2 In a second aspect, an embodiment of the present application discloses a food processor. The food processor comprises any of the aforementioned stirring blade assembly 10, a stirring cup 20, and a driving device, wherein the driving device drives the blade assembly 3 to rotate in the stirring cup 20. The driving device can drive the blade assembly 3 via a clutch, or can drive the blade assembly 3 via magnetic force. In the figure, the stirring blade assembly 10, the stirring cup 20, and other components constitute a stirring cup assembly 100. The driving device is disposed on the host 200.

[0064] The above description is only a preferred implementation mode of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A stirring blade assembly, characterized in that: The stirring blade assembly comprises a blade shaft (2) and a blade assembly (3), wherein: The knife shaft (2) comprises a circumferentially deflected assembly section (21), wherein the area of ​​the radial cross section of the assembly section (21) increases downwardly along the axial direction of the knife shaft (2); The knife assembly (3) and the assembly section (21) are detachably connected and rotate synchronously with the knife shaft (2).

2. The stirring blade assembly according to claim 1, characterized in that: Along the axial direction of the knife shaft (2), the area of ​​the radial cross-section of the assembly section (21) gradually increases to achieve the increase, or, along the axial direction of the knife shaft (2), the increase amplitude of the radial cross-section of the assembly section (21) is different to achieve the increase.

3. The stirring blade assembly according to claim 2, characterized in that: When the area of ​​the radial cross section of the assembly section (21) gradually increases, the taper angle of the assembly section (21) is a, 0 degrees < a ≤ 20 degrees.

4. The stirring blade assembly according to claim 1, characterized in that: The radial cross section of the assembly section (21) is polygonal.

5. The stirring blade assembly according to claim 4, characterized in that: The side surface (211) of the assembly section (21) is a helical surface rotating around the rotation center line of the knife shaft to achieve the deflection, and / or the polygon is a regular polygon.

6. The stirring blade assembly according to claim 5, characterized in that: The helix angle of the helical surface is β, 0 degrees < β ≤ 30 degrees.

7. The stirring blade assembly according to any one of claims 1 to 6, characterized in that: The assembly section (21) satisfies at least one of the following conditions: a) the axial height of the assembly section (21) along the knife shaft is h, 4 mm ≤ h ≤ 30 mm; b) The top end of the assembly section (21) corresponds to a diameter d1, and the bottom end corresponds to a diameter d2, d2 = d1 + Δd, 0 < Δd ≤ 3 mm, 5 mm ≤ d1 ≤ 8 mm.

8. The stirring blade assembly according to any one of claims 1 to 6, characterized in that: The knife assembly (3) comprises a knife shaft sleeve (31), and the knife shaft sleeve (31) comprises a sleeve hole (311) which penetrates the assembly section (21) and is clearance-matched, and the cross-sectional shape of the sleeve hole (311) is the same as the radial cross-sectional shape of the assembly section (21).

9. The stirring blade assembly according to any one of claims 1 to 6, characterized in that: The knife assembly (3) comprises a knife shaft sleeve (31), a fixing nut (32) and a blade (33); the knife shaft sleeve (31) and the fixing nut (32) are both inserted into the assembly section (21) of the knife shaft (2); the knife shaft sleeve (31) and the fixing nut (32) are threadedly connected and clamp the blade (33).

10. A food processor, characterized in that: The food processor comprises a stirring blade assembly (10) according to any one of claims 1 to 9, a stirring cup (20), and a driving device, wherein the driving device drives the blade assembly (3) to rotate in the stirring cup (20).

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