CN220824191U - Stirring knife assembly and cooking machine - Google Patents

Abstract

The application provides a stirring knife assembly and a cooking machine. The stirring blade assembly includes: the rotating shaft comprises a driving section, the driving section comprises a driving convex part extending along the up-down direction, the driving convex part gradually deflects along the circumferential direction of the driving section, the deflection direction of the driving convex part from top to bottom is opposite to the rotating direction of the rotating shaft, and the driving convex part comprises a driving convex part extending in an arc shape along the circumferential direction of the driving section; and the knife assembly is detachably arranged on the rotating shaft and comprises a knife rest and a knife blade fixed on the knife rest, and the knife rest or the knife blade is provided with a driving hole matched with the driving section. In this way, the knife assembly can be conveniently detached for cleaning.

Description

Stirring knife assembly and cooking machine

Technical Field

The application relates to the field of food processing, in particular to a stirring knife assembly and a cooking machine.

Background

With the increasing level of living of people, many different types of food processing machines appear on the market. The functions of the food processor mainly include, but are not limited to, the functions of making soybean milk, squeezing juice, making rice paste, mincing meat, shaving ice, making coffee, and/or preparing a facial mask. The food processor can comprise a soymilk machine, a stirrer, a broken food machine and other machines for crushing and stirring food. The stirring sword of current cooking machine is fixed in stirring cup bottom, can't dismantle, washs inconveniently.

Disclosure of utility model

The application provides a stirring knife assembly and a cooking machine, which can be conveniently disassembled for cleaning.

In one aspect, the present application provides a blender blade assembly. The stirring blade assembly includes: the rotating shaft comprises a driving section, the driving section comprises a driving convex part extending along the up-down direction, the driving convex part gradually deflects along the circumferential direction of the driving section, the deflection direction of the driving convex part from top to bottom is opposite to the rotating direction of the rotating shaft, and the driving convex part comprises a driving convex part extending in an arc shape along the circumferential direction of the driving section; and the knife assembly is detachably arranged on the rotating shaft and comprises a knife rest and a knife blade fixed on the knife rest, and the knife rest or the knife blade is provided with a driving hole matched with the driving section. Because the cutter component is detachably arranged on the rotating shaft, when the stirring cup component needs to be cleaned after being used, a user rotates the cutter component along the deflection direction of the driving convex part to detach the cutter component, and the cleaning is thorough, so that dead angles which cannot be cleaned are not existed in the stirring cup component, and the conditions of bacteria breeding and peculiar smell generation are effectively avoided; meanwhile, as the driving section comprises the driving convex part which deflects along the circumferential direction, the deflection direction of the driving convex part from top to bottom is opposite to the rotation direction of the rotating shaft, and the inner wall of the driving hole is propped against the driving convex part along with the rotation of the cutter shaft (namely, the deflection direction of the driving convex part from top to bottom), therefore, the inner wall of the driving hole is propped against the driving convex part, the propping force of the driving convex part on the inner wall of the driving hole has downward component force, that is, the driving convex part has downward limiting function on the cutter assembly, so that the cutter assembly cannot be separated from the rotating shaft along the axial direction upwards in high-speed rotation; in addition, since the driving protrusion includes the driving convex surface extending in an arc shape along the circumferential direction of the driving section, the cutter assembly can be more smoothly mounted to the rotating shaft.

Further, the driving hole comprises a driving inner face matched with the driving convex face, and the driving inner face vertically extends along the up-down direction. Through the cooperation of drive inner face and drive convex surface, the drive convex surface has the effort down to the drive inner face to can be with the knife tackle spare limiting in the pivot, avoid the knife tackle spare to break away from the pivot along the axial up in high-speed rotation.

Further, the drive lobe top end is deflected at an angle of between 15 and 75 degrees relative to the bottom end, the drive section is between 8 and 40 millimeters in height, and/or the drive aperture is between 1 and 6 millimeters in thickness. So, drive convex part tool setting subassembly has better limiting displacement, and the tool setting subassembly can not break away from the pivot in rotation in-process or in the slurry pouring in-process to the installation of tool setting subassembly is comparatively convenient with dismantling.

Further, the drive aperture includes a drive inner face mated with the drive lobe, the drive inner face being deflected in the same direction as the drive lobe. The inner driving surface and the driving convex part realize self-locking through a spiral structure, the installation and the disassembly are convenient, and the knife assembly can be prevented from being separated from the rotating shaft along the axial direction upwards in the high-speed rotation.

Further, the drive lobe top end is deflected at an angle of between 15 and 75 degrees relative to the bottom end, the drive section is between 8 and 40 millimeters in height, and/or the drive aperture is between 8 and 40 millimeters in thickness. So, through drive convex part and drive hole cooperation, the tool setting subassembly has better limiting displacement, and the tool setting subassembly can not break away from the pivot in rotation process or in the slurry pouring process to the installation and the dismantlement of tool setting subassembly are comparatively convenient.

Further, the rotating shaft further comprises a limiting section arranged above the driving section, and the tool rest comprises a limiting hole matched with the limiting section. Through spacing hole and spacing section cooperation, can be better spacing to the knife tackle spare, avoid the knife tackle spare to take place to rock in the rotation. The limiting section is arranged to be a round shaft, the limiting hole is arranged to be a round hole, so that when the cutter assembly is reversely assembled in the upper and lower directions, the driving hole cannot be matched with the driving section, and the rotating shaft cannot drive the cutter assembly to rotate at the moment, so that the reverse assembly of the cutter assembly can be avoided.

Further, the drive section includes 2 oppositely disposed drive lobes, and the cross section of the drive section includes a major axis formed by the 2 drive lobes and a minor axis perpendicular to the major axis, the ratio of the length of the major axis to the length of the minor axis being between 1.25 and 2. So, on the one hand make the drive section have better spacing end and take off the effect to the knife tackle spare, when the slurry pouring, the knife tackle spare is difficult to drop, on the other hand conveniently installs the knife tackle spare in the pivot, also can conveniently dismantle the knife tackle spare from the pivot.

In another aspect, the present application provides a blender blade assembly. The stirring blade assembly includes: the rotating shaft comprises a driving section, the driving section comprises a driving convex part extending along the up-down direction, and the driving convex part comprises a driving convex surface extending along the circumferential direction of the driving section in an arc shape; the cutter assembly is detachably mounted on the rotating shaft, the cutter assembly comprises a cutter rest and a cutter blade fixed on the cutter rest, the cutter rest comprises a driving hole matched with the driving section, the driving hole comprises a driving inner face extending in an arc shape along the circumferential direction, the driving inner face is matched with the driving convex face, and the driving inner face is gradually deflected from top to bottom towards the direction opposite to the rotating direction of the rotating shaft. Since the driving hole comprises a driving inner face, the driving inner face deflects gradually from top to bottom in a direction opposite to the rotating direction of the rotating shaft, the driving section comprises a driving convex part extending vertically in the up-down direction, and the driving convex face is propped against the driving inner face in the direction opposite to the rotating direction of the rotating shaft while the knife assembly rotates along with the rotating shaft, the driving convex face has downward acting force on the driving inner face, that is, the driving section knife setting assembly has downward limiting effect, so that the knife assembly cannot be separated from the knife shaft in the upward axial direction in high-speed rotation.

Further, the driving section comprises 2 driving convex parts which are arranged along the up-down direction, the cross section of the driving hole comprises a long shaft corresponding to the 2 driving convex parts and a short shaft perpendicular to the long shaft, and the ratio of the length of the long shaft to the length of the short shaft is between 1.25 and 2. So, on the one hand make the drive section have better spacing end and take off the effect to the knife tackle spare, when the slurry pouring, the knife tackle spare is difficult to drop, on the other hand conveniently installs the knife tackle spare in the pivot, also can conveniently dismantle the knife tackle spare from the pivot.

Further, the driving protrusion deflects in the same direction as the driving inner face; or the driving protrusion extends vertically in the up-down direction. Through the cooperation of drive inner face and drive convex surface, the drive convex surface has the effort down to the drive inner face to can be with the knife tackle spare limiting in the pivot, avoid the knife tackle spare to break away from the pivot along the axial up in high-speed rotation.

The application further provides a food processor. This cooking machine includes: a host; the stirring cup assembly is arranged on the host machine and comprises a stirring cup and a chassis fixed at the bottom of the stirring cup; the stirring cutter assembly is arranged at the bottom of the stirring cup, wherein the rotating shaft penetrates through the chassis, and a bearing sleeve and a bearing are arranged between the rotating shaft and the chassis; and the cup cover assembly is covered on the stirring cup assembly.

Drawings

FIG. 1 is an exploded perspective view of one embodiment of a food processor of the present application;

FIG. 2 is a cross-sectional view of the blender cup assembly shown in FIG. 1;

FIG. 3 is an enlarged view of the portion A shown in FIG. 2;

FIG. 4 is an exploded perspective view of the blender blade assembly shown in FIG. 2;

FIG. 5 is a schematic perspective view of the knife assembly of FIG. 2;

FIG. 6 illustrates a bottom view of the blender blade assembly illustrated in FIG. 2;

FIG. 7 is a cross-sectional view of another embodiment of the blender blade assembly of the present application;

FIG. 8 is an exploded perspective view of the blender blade assembly shown in FIG. 7;

FIG. 9 is a cross-sectional view of another embodiment of the blender blade assembly of the present application;

Fig. 10 is an exploded perspective view of the blender blade assembly shown in fig. 9.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of apparatus consistent with aspects of the application as detailed in the accompanying claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of the terms "a" or "an" and the like in the description and in the claims do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that elements or items appearing before "comprising" or "comprising" are encompassed by the element or item recited after "comprising" or "comprising" and equivalents thereof, and that other elements or items are not excluded. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

Referring to fig. 1 to 10, the food processor 100 may be used for making soybean milk, rice paste, juice, etc. The food processor 100 includes a main machine 50, a blender cup assembly 60, and a bowl cover assembly 70. The stirring cup assembly 60 is mounted on the main machine 50, and the cup cover assembly 70 covers the stirring cup assembly 60. The main unit 50 includes a housing and a motor disposed in the housing.

The mixing cup assembly 60 includes a mixing cup 10 and a base plate secured to the bottom of the mixing cup 10. A stirring blade assembly is disposed at the bottom of the stirring cup 10, and the stirring blade assembly includes a rotating shaft 22 and a blade assembly 30. The rotating shaft 22 penetrates through the chassis 21, and a bearing sleeve 23 and a bearing 24 are arranged between the rotating shaft 22 and the chassis 21. A bearing 24 and an oil seal 26 are arranged between the rotating shaft 22 and the bearing sleeve 23. In one embodiment, the stirring cup 10 comprises a cup body 11 and a cup holder 12 assembled at the bottom of the cup body 11, and the bottom plate 21 is fixed between the cup body 11 and the cup holder 12. The cup 11 and the cup holder 12 are assembled together by screw threads or a screw-fastening, etc., and are not limited thereto. The chassis 21 is provided with electronic components such as a heating element (not labeled), a temperature controller (not labeled), a temperature sensor (not labeled) and the like. The heating element is used for heating the food materials in the stirring cup 10. The rotary shaft 22 includes a driving section 220, the driving section 220 includes a driving protrusion 221 extending in an up-down direction, and the driving protrusion 221 is gradually deflected in a circumferential direction of the driving section 220, a deflection direction of the driving protrusion 221 from top to bottom is opposite to a rotation direction of the rotary shaft 22, and the driving protrusion 221 includes a driving protrusion 2211 extending in an arc shape in the circumferential direction of the driving section 220. In the illustrated embodiment, the drive section 220 is elliptical or elliptical-like in cross-section. In another embodiment, the rotating shaft 22 includes a cylindrical portion, and the driving protrusion 221 is formed by protruding from a surface of the cylindrical portion.

A knife assembly 30 is detachably mounted on the rotating shaft 22, the knife assembly 30 comprises a knife rest 31 and a knife blade 32 fixed on the knife rest 31, and the knife rest 31 or the knife blade 32 is provided with a driving hole 320 matched with the driving section 220. The motor shaft of the motor is connected with the rotating shaft 22, and the rotating shaft 22 drives the knife assembly 30 to rotate, so that food materials in the stirring cup 10 are whipped and crushed.

According to the stirring cup assembly 60, since the cutter assembly 30 is detachably arranged on the rotating shaft 22, when the stirring cup assembly 60 needs to be cleaned after being used, a user rotates the cutter assembly 30 along the deflection direction of the driving convex part 221, and the cutter assembly 30 is detached for thorough cleaning, so that dead angles which cannot be cleaned are not existed in the stirring cup assembly 60, and the conditions of bacteria breeding and peculiar smell generation are effectively avoided; meanwhile, since the driving section 220 includes the driving protrusion 221 that deflects along the circumferential direction, and the deflecting direction of the driving protrusion 221 from top to bottom is opposite to the rotating direction of the rotating shaft 22, while the knife assembly 30 rotates along with the knife shaft 22, the inner wall of the driving hole 320 abuts against the driving protrusion 221 in the direction opposite to the rotating direction of the knife shaft 22 (i.e., the deflecting direction of the driving protrusion 221 from top to bottom), so that the inner wall of the driving hole 320 abuts against the driving protrusion 221, the abutting force of the driving protrusion 221 against the inner wall of the driving hole 320 has a downward component, that is, the driving protrusion 221 has a downward limiting effect on the knife assembly 30, so that the knife assembly 30 cannot separate from the rotating shaft 22 in the axial direction during high-speed rotation; in addition, since the driving protrusion 221 includes the driving convex surface 2211 extending in an arc shape along the circumferential direction of the driving section 220, the cutter assembly 30 can be more smoothly mounted to the rotation shaft 22.

Referring to fig. 1 to 6, the driving hole 320 includes a driving inner surface 321 matching the driving convex surface 2211, and the driving inner surface 321 extends vertically in the up-down direction. By the cooperation of the inner driving surface 321 and the convex driving surface 2211, the convex driving surface 2211 has downward acting force on the inner driving surface 321, so that the knife assembly 30 can be limited on the rotating shaft 22, and the knife assembly 30 is prevented from being separated from the rotating shaft 22 upwards along the axial direction in high-speed rotation.

The drive boss 221 may deflect at an angle between 15 and 75 degrees from the top end to the bottom end, the drive section 220 may have a height between 8 and 40 millimeters, and/or the drive aperture 320 may have a thickness between 1 and 6 millimeters. Thus, the driving protrusion 221 has a better limiting effect on the cutter assembly 30, the cutter assembly 30 cannot be separated from the rotating shaft 22 in the rotating process or the slurry pouring process, and the cutter assembly 30 is convenient to install and detach.

In some embodiments, the angle of deflection of the top end of the drive lobe 221 relative to the bottom end may be 15 degrees, 20 degrees, 30 degrees, 40 degrees, 50 degrees, 60 degrees, 70 degrees, 75 degrees, or some value between any adjacent two of the above. The height of the drive section 220 may be 8 mm, 12 mm, 16 mm, 20mm, 24 mm, 28 mm, 32 mm, 36 mm, 40mm, or some value between any two of the foregoing. The thickness of the drive aperture 320 may be 1 mm, 2 mm, 3mm, 4 mm, 5 mm, 6 mm, or some value between any two adjacent thereto.

Referring to fig. 7 and 8, the driving hole 320 includes a driving inner surface 321 matching the driving convex surface 2211, and the driving inner surface 321 deflects in the same direction as the driving convex surface 221. That is, the driving inner surface 321 and the driving protrusion 221 are self-locked by the screw structure, and are convenient to install and disassemble, and the knife assembly 30 can be prevented from being separated from the rotating shaft 22 in the axial direction upwards in high-speed rotation.

The drive boss 221 may deflect at an angle between 15 and 75 degrees from the top end to the bottom end, the drive section 220 may have a height between 8 and 40 millimeters, and/or the drive aperture 320 may have a thickness between 8 and 40 millimeters. Thus, the cutter assembly 30 has a better limiting effect by matching the driving convex part 221 with the driving hole 320, the cutter assembly 30 cannot be separated from the rotating shaft 22 in the rotating process or the slurry pouring process, and the cutter assembly 30 is convenient to install and detach.

In some embodiments, the angle of deflection of the top end of the drive lobe 221 relative to the bottom end may be 15 degrees, 20 degrees, 30 degrees, 40 degrees, 50 degrees, 60 degrees, 70 degrees, 75 degrees, or some value between any adjacent two of the above. The height of the drive section 220 may be 8 mm, 12 mm, 16 mm, 20 mm, 24 mm, 28 mm, 32 mm, 36 mm, 40 mm, or some value between any two of the foregoing. The thickness of the drive aperture 320 may be 8 mm, 12 mm, 16 mm, 20 mm, 24 mm, 28 mm, 32 mm, 36 mm, 40 mm, or some value between any two of the foregoing. In the illustrated embodiment, the height of the driving section 220 and the thickness of the driving hole 320 are equal, but are not limited thereto.

The rotating shaft 22 further comprises a limiting section 2241 disposed above the driving section 220, and the tool rest 31 comprises a limiting hole 319 matched with the limiting section 2241. Through spacing hole 319 and spacing section 2241 cooperation, can be better spacing to the knife tackle spare 30, avoid the knife tackle spare 30 to take place to rock in the rotation. The spacing section 2241 is configured as a circular shaft, and the spacing hole 319 is configured as a circular hole, so that when the cutter assembly 30 is reversely assembled in the up-down direction, the driving hole 320 cannot be matched with the driving section 220, and the rotating shaft 22 cannot drive the cutter assembly 30 to rotate at this time, so that the reverse assembly of the cutter assembly 30 can be avoided.

The blade 32 is fixed to the blade holder 31 by welding; or the blade 32 is fixed to the blade holder 31 by a nut. In this way, the knife assembly 30 is simple and stable in structure and is less expensive to manufacture.

The driving section 220 includes 2 driving protrusions 221 disposed opposite to each other, and a cross section of the driving section 220 includes a long axis formed by the 2 driving protrusions 221 and a short axis perpendicular to the long axis, and a ratio of a length L of the long axis to a length R of the short axis is between 1.25 and 2. So, on the one hand, make the drive section 220 have better spacing end and take off effect to the knife tackle spare 30, when the slurry pouring, knife tackle spare 30 is difficult to drop, on the other hand conveniently installs knife tackle spare 30 in pivot 22, also can conveniently dismantle knife tackle spare 30 from pivot 22.

Referring to fig. 9 and 10, the stirring blade assembly includes: a spindle 22 and a knife assembly 30. The rotary shaft 22 includes a driving section 220, the driving section 220 includes a driving protrusion 221 extending in an up-down direction, and the driving protrusion 221 includes a driving protrusion 2211 extending in an arc shape along a circumferential direction of the driving section 220.

The knife assembly 30 is detachably mounted on the rotating shaft 22, the knife assembly 30 comprises a knife rest 31 and a knife blade 32 fixed on the knife rest 31, the knife rest 31 comprises a driving hole 320 matched with the driving section 220, the driving hole 320 comprises a driving inner face 321 extending in an arc shape along the circumferential direction, the driving inner face 321 is matched with the driving convex face 2211, and the driving inner face 321 is gradually deflected from top to bottom in the direction opposite to the rotating direction of the rotating shaft 22. Since the driving hole 320 includes the driving inner surface 321, the driving inner surface 321 deflects gradually from top to bottom in a direction opposite to the rotation direction of the rotating shaft 22, the driving section 220 includes the driving protrusion 221 extending vertically in the up-down direction, and the driving protrusion 2211 presses against the driving inner surface 321 in a direction opposite to the rotation direction of the rotating shaft 22 while the knife assembly 30 rotates along with the rotating shaft 22, so that the driving protrusion 221 has a downward force on the driving inner surface 321, that is, the driving section 220 has a downward limiting function on the knife assembly 30, so that the knife assembly 30 cannot separate from the knife shaft 22 in the axial direction in the high-speed rotation.

The driving section 220 includes 2 driving protrusions 221 disposed opposite to each other, and the cross section of the driving hole 320 includes a long axis corresponding to the 2 driving protrusions 221 and a short axis perpendicular to the long axis, and a ratio of a length of the long axis to a length of the short axis is between 1.25 and 2. So, on the one hand, make the drive section 220 have better spacing end and take off effect to the knife tackle spare 30, when the slurry pouring, knife tackle spare 30 is difficult to drop, on the other hand conveniently installs knife tackle spare 30 in pivot 22, also can conveniently dismantle knife tackle spare 30 from pivot 22.

The angle of deflection of the top end of the inner driving surface 321 relative to the bottom end is between 15 and 75 degrees, the height of the driving hole 320 is between 8 and 40 mm, and/or the thickness of the driving section 220 is between 1 and 6 mm. Thus, the cutter assembly 30 has a better limiting function by matching the driving hole 320 with the driving convex part 221, the cutter assembly 30 cannot be separated from the rotating shaft 22 in the rotating process or the slurry pouring process, and the cutter assembly 30 is convenient to install and detach.

In some embodiments, the angle of deflection of the top end of the inner driving surface 321 relative to the bottom end may be 15 degrees, 20 degrees, 30 degrees, 40 degrees, 50 degrees, 60 degrees, 70 degrees, 75 degrees, or some value between any two of the foregoing. The height of the drive aperture 320 may be 8 mm, 12 mm, 16 mm, 20 mm, 24 mm, 28 mm, 32 mm, 36 mm, 40 mm, or some value between any two of the foregoing. The thickness of the drive section 220 may be 1 mm, 2 mm, 3 mm, 4 mm, 5mm, 6 mm, or some value between any two of the foregoing neighbors.

In the embodiment shown in fig. 9 and 10, the drive boss 221 deflects in the same direction as the drive inner face 321. In another embodiment, the driving protrusion 221 extends vertically in the up-down direction.

The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the application.

Claims (11)

1. A stirring blade assembly, comprising:

A rotating shaft (22) including a driving section (220), the driving section (220) including a driving protrusion (221) extending in an up-down direction, and the driving protrusion (221) being gradually deflected in a circumferential direction of the driving section (220), a direction of deflection of the driving protrusion (221) from top to bottom being opposite to a direction of rotation of the rotating shaft (22), and the driving protrusion (221) including a driving protrusion (2211) extending in an arc shape in the circumferential direction of the driving section (220); and

The knife assembly (30) is detachably arranged on the rotating shaft (22), the knife assembly (30) comprises a knife rest (31) and a knife blade (32) fixed on the knife rest (31), and the knife rest (31) or the knife blade (32) is provided with a driving hole (320) matched with the driving section (220).

2. The blender blade assembly of claim 1, wherein: the driving hole (320) comprises a driving inner face (321) matched with the driving convex face (2211), and the driving inner face (321) vertically extends along the up-down direction.

3. The blender blade assembly of claim 2, wherein: the drive lobe (221) has a top end deflected at an angle of between 15 and 75 degrees relative to a bottom end, the drive section (220) has a height of between 8 and 40 millimeters, and/or the drive aperture (320) has a thickness of between 1 and 6 millimeters.

4. The blender blade assembly of claim 1, wherein: the drive aperture (320) comprises a drive inner face (321) matching the drive cam (2211), the drive inner face (321) being deflected in the same direction as the drive cam (221).

5. The blender blade assembly of claim 4, wherein: the drive lobe (221) has a top end deflected at an angle of between 15 and 75 degrees relative to a bottom end, the drive section (220) has a height of between 8 and 40 millimeters, and/or the drive aperture (320) has a thickness of between 8 and 40 millimeters.

6. The blender blade assembly of claim 1, wherein: the rotating shaft (22) further comprises a limiting section (2241) arranged above the driving section (220), and the tool rest (31) comprises a limiting hole (319) matched with the limiting section (2241).

7. The blender blade assembly of claim 1, wherein: the drive section (220) comprises 2 oppositely arranged drive lobes (221), the cross section of the drive section (220) comprises a long axis formed by the 2 drive lobes (221) and a short axis perpendicular to the long axis, and the ratio of the length (L) of the long axis to the length (R) of the short axis is between 1.25 and 2.

8. A stirring blade assembly, comprising:

A rotating shaft (22) including a driving section (220), the driving section (220) including a driving protrusion (221) extending in an up-down direction, the driving protrusion (221) including a driving protrusion (2211) extending in an arc shape along a circumferential direction of the driving section (220);

The cutter assembly (30) is detachably mounted on the rotating shaft (22), the cutter assembly (30) comprises a cutter rest (31) and a cutter blade (32) fixed on the cutter rest (31), the cutter rest (31) comprises a driving hole (320) matched with the driving section (220), the driving hole (320) comprises a driving inner face (321) extending in an arc shape along the circumferential direction, the driving inner face (321) is matched with the driving convex face (2211), and the driving inner face (321) is gradually deflected from top to bottom towards the direction opposite to the rotating direction of the rotating shaft (22).

9. The blender blade assembly of claim 8, wherein: the driving section (220) comprises 2 driving convex parts (221) which are arranged along the up-down direction, the cross section of the driving hole (320) comprises a long axis corresponding to the 2 driving convex parts (221) and a short axis perpendicular to the long axis, and the ratio of the length of the long axis to the length of the short axis is between 1.25 and 2.

10. The blender blade assembly of claim 8, wherein: the drive lug (221) deflects in the same direction as the drive inner face (321); or the driving protrusion (221) extends vertically in the up-down direction.

11. A cooking machine, characterized in that it includes:

a host (50);

The stirring cup assembly (60) is arranged on the main machine (50), and the stirring cup assembly (60) comprises a stirring cup (10) and a chassis (21) fixed at the bottom of the stirring cup (10);

The stirring blade assembly according to any one of claims 1 to 10, being arranged at the bottom of the stirring cup (10), wherein the rotating shaft (22) penetrates through the chassis (21), and a bearing sleeve (23) and a bearing (24) are arranged between the rotating shaft (22) and the chassis (21); and

And the cup cover assembly (70) is covered on the stirring cup assembly.