Outer rotor motor assembly and food processor

Abstract

The utility model provides an outer rotor motor assembly and a food processor. According to one embodiment of the invention, the external rotor motor assembly comprises a rotor assembly which comprises a motor shell and a magnetic part, and the magnetic part is installed in the motor shell; the stator assembly is installed on the motor shell and comprises a fixing base, a connecting shaft and a stator winding, the stator winding is arranged on the periphery of the connecting shaft in a sleeving mode and arranged on the inner periphery of the magnetic part, and the fixing base is fixedly connected with the connecting shaft and covers the top of the motor shell; and the sealing element is clamped between the fixed seat and the motor shell and is used for sealing a gap between the fixed seat and the motor shell. According to the scheme, the sealing effect of the outer rotor motor can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of food processors, in particular to an outer rotor motor assembly and a food processor. BACKGROUND

[0002] In order to improve the compactness and power of the food processor, some food processors adopt an outer rotor motor structure. However, the sealing performance of the outer rotor motor is poor, and the outer rotor motor is easily affected by food residue, dust, moisture and other pollutants, increasing the risk of failure and maintenance frequency. CONTENT OF THE UTILITY MODEL

[0003] The present application provides an outer rotor motor assembly and a food processor, which can improve the sealing effect of the outer rotor motor.

[0004] In a first aspect, the present application provides an outer rotor motor assembly, comprising: a rotor assembly comprising a motor shell and a magnetic member, the magnetic member being installed in the motor shell; a stator assembly installed in the motor shell, comprising a fixing seat, a connecting shaft and a stator winding, the stator winding being sleeved on the outer periphery of the connecting shaft and being arranged on the inner periphery of the magnetic member, the fixing seat being fixedly connected with the connecting shaft and covering the top of the motor shell; and a sealing member clamped between the fixing seat and the motor shell, sealing the gap between the fixing seat and the motor shell.

[0005] By adopting the above scheme, the fixing seat provides mechanical support for the connecting shaft, reducing unnecessary shaking and deviation of the connecting shaft. Moreover, the fixing seat also covers the top of the motor shell. The fixing seat also plays a protective role by covering the top of the motor shell, preventing larger pollutants such as dust from entering the motor shell. At the same time, the sealing member is clamped between the fixing seat and the motor shell, sealing the gap between the fixing seat and the motor shell. The sealing member can prevent external pollutants such as dust and moisture from entering the interior of the motor shell through the gap, helping to maintain the stability of the stator winding and other components in the motor shell, and avoiding their interference by pollutants such as moisture as much as possible.

[0006] Optionally, the sealing member comprises a sealing seat and a sealing structure, the sealing seat being sleeved on the outer periphery of the motor shell, and the sealing structure extending from the sealing seat towards the fixing seat and abutting against the fixing seat.

[0007] The sealing seat is the basis of the sealing member, providing support and positioning for the sealing structure. After the sealing seat is sleeved on the outer periphery of the motor shell, the sealing structure can extend and abut against the fixing seat in the correct direction and position. The sealing seat can enable the sealing structure to stably perform its sealing function.

[0008] Optionally, the sealing structure comprises a plurality of sealing portions, each of the plurality of sealing portions abutting against the fixing seat. Compared with a single sealing portion, a plurality of contact points or contact surfaces can be used to seal the gap between the motor shell and the fixing seat, thereby forming a more rigorous sealing line and effectively preventing external contaminants such as dust and water vapor from entering the motor shell.

[0009] Optionally, the plurality of sealing portions comprises a first sealing portion and a second sealing portion, each of the first sealing portion and the second sealing portion abutting against the fixing seat, and the second sealing portion being located on the inner side of the first sealing portion.

[0010] The first sealing portion can first block external contaminants such as dust and water vapor, thereby providing a first protection and preventing most contaminants from entering the sealing area. The second sealing portion is located on the inner side of the first sealing portion, thereby forming a second protection and further improving the sealing effect by intercepting a small amount of contaminants that have passed through the first sealing portion or small particles that may have penetrated, and providing more rigorous protection for the inside of the motor.

[0011] Optionally, the fixing seat is provided with a sealing step, the sealing step comprising a first side portion and a first bottom portion connected to each other, the first sealing portion abutting against the first side portion, and the second sealing portion abutting against the first bottom portion.

[0012] The first sealing portion and the second sealing portion abut against different parts of the sealing step, thereby forming a more detailed multi-sealing line. Since the first side portion and the first bottom portion are located on different planes, compared with a single-plane sealing mode, the structure of the present application increases the difficulty of contaminants entering the inside of the motor shell and reduces the possibility of penetration of contaminants, thereby improving the overall sealing effect. Moreover, the sealing step provides a clear positioning mark for the installation of the sealing member, and in the assembly process, the operator can quickly and accurately install the first sealing portion and the second sealing portion according to the position of the sealing step, thereby improving the assembly efficiency and reducing the problem of poor sealing caused by inaccurate installation.

[0013] Optionally, the outer wall of the motor shell is provided with a clamping seat, and the outer rotor motor assembly further comprises a first balancing member, the first balancing member being installed on the clamping seat and supporting the sealing seat.

[0014] The first balancing component adjusts the rotor's mass distribution, making the motor run more smoothly, reducing vibration and noise. It effectively regulates the rotor's imbalance, improving the overall performance of the motor. Simultaneously, the first balancing component supports the sealing seat, providing additional support. This helps maintain the stability of the sealing seat during motor operation, preventing displacement or deformation due to motor vibration or other external forces. This ensures the sealing structure maintains a good sealing effect at all times, further enhancing the protection of internal motor components.

[0015] Optionally, the external rotor motor assembly further includes a retaining ring, which is fitted around the outer periphery of the sealing seat and the first balancing member.

[0016] The retaining ring can constrain the sealing seat and the first balancing component, and apply pressure to the sealing seat and the first balancing component, so that the first balancing component and the sealing seat are more firmly connected to the motor housing.

[0017] Optionally, the external rotor motor assembly further includes a first sealing ring, which is clamped between the retaining ring and the motor housing, and the first sealing ring is located on the side of the first balance member opposite to the sealing seat.

[0018] The first sealing ring and the sealing seat can form a seal on the opposite sides of the first balancing component to prevent food from contacting the first balancing component and to prevent the food from being contaminated by the first balancing component.

[0019] Optionally, the external rotor motor assembly further includes a cutter assembly, which includes a threaded sleeve and blades disposed on the outer periphery of the threaded sleeve. A threaded connection portion is provided at the end of the motor housing away from the fixed base, and the threaded connection portion is threadedly connected to the threaded sleeve. The threaded connection facilitates disassembly, maintenance, and cleaning.

[0020] Optionally, the external rotor motor assembly further includes a second sealing ring, which is sandwiched between the threaded sleeve and the motor housing. The second sealing ring effectively prevents liquids and impurities from entering the gap between the motor housing and the threaded sleeve, thus preventing them from penetrating into the motor interior.

[0021] Optionally, the blade and the threaded sleeve are made of metal, and the blade and the threaded sleeve are integrally formed.

[0022] Optionally, the external rotor motor assembly further includes a second balancing member, which is clamped between the threaded sleeve and the motor housing.

[0023] The second balancing component can adjust the mass distribution of the rotor, making the motor run more smoothly, reducing vibration and noise, and effectively adjusting the imbalance of the motor rotor to improve the overall operating quality of the motor.

[0024] Secondly, this application also provides a food processor, comprising:

[0025] The external rotor motor assembly as described in any of the preceding claims further includes a blade assembly connected to the motor housing; and a cup assembly having a food processing space, wherein the blade assembly is located within the food processing space. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an external rotor motor assembly according to one embodiment;

[0027] Figure 2 This is an exploded structural diagram of an external rotor motor assembly according to one embodiment;

[0028] Figure 3 This is a cross-sectional view of an external rotor motor assembly as shown in one embodiment;

[0029] Figure 4 This is an enlarged schematic diagram of the sealing structure between the mounting base and the motor housing in one embodiment;

[0030] Figure 5 This is a cross-sectional view of a stator assembly shown in one embodiment;

[0031] Figure 6 This is a cross-sectional view of a rotor assembly shown in one embodiment;

[0032] Figure 7 This is a cross-sectional view of a blade assembly shown in one embodiment.

[0033] 10. Rotor assembly; 11. Motor housing; 111. Socket; 112. Narrowing section; 113. Threaded connection; 12. Magnetic component; 20. Stator assembly; 21. Fixing base; 211. First side; 212. First bottom; 213. Second side; 22. Connecting shaft; 23. Stator winding; 30. Seal; 31. Sealing seat; 32. First sealing part; 33. Second sealing part; 41. First balancing component; 42. Second balancing component; 50. Snap ring; 61. First bearing; 62. Second bearing; 71. First sealing ring; 72. Second sealing ring; 80. Tool assembly; 81. Threaded sleeve; 82. Blade. Detailed Implementation

[0034] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0035] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0036] This application provides an external rotor motor assembly and a food processor, which will be described in detail below with reference to the accompanying drawings. Unless otherwise specified, the features of the following embodiments and implementations can be combined with each other.

[0037] Please refer to Figures 1 to 3 . Figure 1 This is a schematic diagram of the structure of an external rotor motor assembly according to one embodiment;

[0038] Figure 2 This is an exploded structural diagram of an external rotor motor assembly according to one embodiment; Figure 3 This is a cross-sectional view of an external rotor motor assembly as shown in one embodiment.

[0039] This application provides an external rotor motor assembly, including a rotor assembly 10, a stator assembly 20, and a seal 30.

[0040] The rotor assembly 10 includes a motor housing 11 and a magnetic element 12, with the magnetic element 12 installed inside the motor housing 11. The stator assembly 20 is installed on the motor housing 11 and includes a mounting base 21, a connecting shaft 22, and a stator winding 23. The stator winding 23 is sleeved on the outer periphery of the connecting shaft 22 and surrounds the inner periphery of the magnetic element 12. The stator winding 23 cooperates with the magnetic element 12; when the stator winding 23 is energized, this rotating magnetic field interacts with the magnetic element 12, causing the magnetic element 12 to drive the motor housing 11 to rotate around the connecting shaft 22. The magnetic element 12 is made of permanent magnet material, and may be, but is not limited to, a magnet assembly made of silicon steel sheets, neodymium iron boron, or other magnetic materials. The stator winding 23 can be configured as needed, and this application does not limit its configuration.

[0041] The mounting base 21 is fixedly connected to the connecting shaft 22. Specifically, the mounting base 21 can be sleeved on the upper part of the connecting shaft 22, and the stator assembly 20 can be sleeved on the lower part of the connecting shaft 22, but it is not limited to this. The mounting base 21 provides mechanical support for the connecting shaft 22, reducing unnecessary shaking and offset of the connecting shaft 22. In addition, the mounting base 21 also covers the top of the motor housing 11. By covering the top of the motor housing 11, the mounting base 21 also plays a protective role, preventing larger contaminants such as dust from entering the motor housing 11.

[0042] The seal 30 is clamped between the mounting base 21 and the motor housing 11, sealing the gap between them. The seal 30 prevents external contaminants such as dust and moisture from entering the motor housing 11 through the gap, helping to maintain the stability of components such as the stator winding 23 within the motor housing 11 and minimizing interference from moisture and other contaminants.

[0043] In summary, this solution effectively prevents external contaminants such as dust and moisture from entering the motor housing 11 by clamping the sealing element 30 between the fixed base 21 and the motor housing 11, thereby protecting the internal components of the motor (such as the stator winding 23 and magnetic components 12). At the same time, the fixed base 21 not only prevents external contaminants from entering but also enhances the overall mechanical support of the motor, reduces the wobbling and misalignment of the connecting shaft 22, and further improves the operating accuracy of the motor.

[0044] The structure and installation location of seal 30 are described in detail below.

[0045] Please refer to Figure 4 In one embodiment, the seal 30 includes a sealing seat 31 and a sealing structure. The sealing seat 31 is fitted around the outer periphery of the motor housing 11, and the sealing structure extends from the sealing seat 31 toward the fixed seat 21 and abuts against the fixed seat 21.

[0046] The sealing seat 31 is the foundation of the sealing element 30, providing support and positioning for the sealing structure. After the sealing seat 31 is fitted onto the outer periphery of the motor housing 11, the sealing structure can extend in the correct direction and position and abut against the fixed seat 21. The sealing seat 31 enables the sealing structure to stably perform its sealing function.

[0047] Furthermore, the sealing structure includes multiple sealing parts, all of which abut against the fixed seat 21. With multiple sealing parts abutting against the fixed seat 21, compared to a single sealing part, sealing of the gap between the motor housing 11 and the fixed seat 21 can be achieved from multiple contact points or contact surfaces, forming a more robust sealing barrier that can more effectively prevent external contaminants such as dust and moisture from entering the motor housing 11.

[0048] The number of multiple sealing parts can be, but is not limited to, 2, 3, 4, 5, or 6.

[0049] In one embodiment, the sealing structure includes a first sealing portion 32 and a second sealing portion 33, both of which abut against the fixing seat 21, with the second sealing portion 33 located inside the first sealing portion 32. The arrangement of the first sealing portion 32 and the second sealing portion 33 forms a hierarchical sealing structure.

[0050] The first sealing part 32, acting as the outer seal, can initially block external contaminants such as dust and moisture, providing the first line of protection and preventing most contaminants from entering the sealed area. The second sealing part 33, located inside the first sealing part 32, forms a second line of protection, further intercepting any small amount of contaminants that have passed through the first sealing part 32 or any tiny particles that may have penetrated, thus further improving the sealing effect and providing more stringent protection for the inside of the motor.

[0051] Please refer to Figure 5 and combined Figure 4 The motor housing 11 is provided with a sealing step, which includes a first side portion 211 and a first bottom portion 212 connected together. A first sealing portion 32 abuts against the first side portion 211, and a second sealing portion 33 abuts against the first bottom portion 212. Specifically, the first sealing portion 32 extends upward from the sealing seat 31 and then extends towards the first side portion 211, and the second sealing portion 33 extends towards the first side portion 211 and then extends towards the first bottom portion 212.

[0052] The first sealing part 32 and the second sealing part 33 abut against different parts of the sealing step, forming a more detailed multi-layered sealing defense. Compared with a single-plane sealing method, this structure increases the difficulty for contaminants to enter the motor housing 11, reduces the possibility of contaminant penetration, and improves the overall sealing effect. Furthermore, the sealing step provides clear positioning marks for the installation of the sealing element 30. During assembly, operators can quickly and accurately install the first sealing part 32 and the second sealing part 33 based on the position of the sealing step, improving assembly efficiency and reducing sealing problems caused by inaccurate installation.

[0053] In another embodiment, the motor housing 11 further includes a second side portion 213 located below the sealing step, and the second sealing portion 33 may abut against the second side portion 213.

[0054] Please refer to Figure 6 and combine it with... Figure 3 In one embodiment, the outer wall of the motor housing 11 is further provided with a retainer 111. The retainer 111 can be a protrusion extending outward from the outer wall of the motor housing 11, but is not limited thereto. The outer rotor motor assembly also includes a first balancing member 41. The first balancing member 41 can be block-shaped, but is not limited thereto. The first balancing member 41 is mounted on the first retainer 111 and supports the sealing seat 31.

[0055] The first balancing component 41 can adjust the mass distribution of the rotor, making the motor run more smoothly, reducing vibration and noise, and effectively adjusting the imbalance of the motor rotor, thus improving the overall operating quality of the motor. Simultaneously, the first balancing component 41 also supports the sealing seat 31, providing it with additional support. This helps maintain the stability of the sealing seat 31 during motor operation, preventing displacement or deformation due to motor vibration or other external forces, thereby ensuring that the sealing structure always maintains a good sealing effect and further improving the protection of internal motor components.

[0056] It should be noted that the weight and volume of the first balancing component 41 can be set as needed, and this application does not impose specific limitations on this.

[0057] Furthermore, the external rotor motor assembly also includes a retaining ring 50, which is fitted around the outer periphery of the sealing seat 31 and the first balancing member 41. The retaining ring 50 can constrain the sealing seat 31 and the first balancing member 41 and apply pressure to the sealing seat 31 and the first balancing member 41, so that the first balancing member 41 and the sealing seat 31 are more securely connected to the motor housing 11.

[0058] Furthermore, the external rotor motor also includes a first sealing ring 71, which is clamped between the retaining ring 50 and the motor housing 11, and is located on the side of the first balancing member 41 opposite to the sealing seat 31. Specifically, the outer wall of the motor housing 11 is provided with a first groove, the first sealing ring 71 is filled in the first groove and abuts against the retaining ring 50.

[0059] With this configuration, the first sealing ring 71 and the sealing seat 31 can form a seal on the first balance member 41 on opposite sides, preventing food from contacting the first balance member 41.

[0060] In another embodiment, the external rotor motor assembly does not include the first balancer 41 (not shown), and the sealing seat 31 is directly disposed on the retainer 111 and constrained by the retaining ring 50.

[0061] In one embodiment, the external rotor motor assembly further includes a first bearing 61 and a second bearing 62. The first bearing 61 is disposed between the outer wall of the fixed base 21 and the inner wall of the motor housing 11. The second bearing 62 is disposed between the connecting shaft 22 and the inner wall of the motor housing 11. The first bearing 61 and the second bearing 62 are spaced apart along the axial direction of the connecting shaft 22. The two bearings work together to provide precise support and positioning for the rotating parts of the motor, ensuring stable rotation of the motor housing 11 around the connecting shaft 22, effectively reducing radial runout and axial movement during motor operation, and improving the smoothness of motor operation.

[0062] Specifically, the motor housing 11 includes a narrowing section 112, which is located below the stator winding 23. A second bearing 62 is disposed between the narrowing section 112 and the connecting shaft 22. This design, which includes the narrowing section 112 and the second bearing 62, cleverly utilizes the internal space of the motor, making the motor structure more compact and rational.

[0063] Please refer to Figure 7 and combined Figure 3 In one embodiment, the external rotor motor assembly further includes a blade assembly 80, which includes a threaded sleeve 81 and blades 82 disposed on the outer periphery of the threaded sleeve 81. A threaded connection portion 113 is provided at the end of the motor housing 11 away from the fixed base 21, and the threaded connection portion 113 is threadedly connected to the threaded sleeve 81. Specifically, the threaded sleeve 81 has a threaded hole, and the outer periphery of the threaded connection portion 113 has connecting threads that are screwed into the threaded hole.

[0064] The threaded sleeve 81 of the blade assembly 80 and the threaded connection part 113 of the motor housing 11 are connected by a threaded connection, which is simple and intuitive to operate. Users can quickly and accurately install the blade assembly 80 onto the motor housing 11 without complicated tools or special assembly processes, greatly improving production efficiency. At the same time, this also facilitates maintenance and replacement: when the blade 82 is worn, damaged, or needs cleaning, users can easily unscrew the blade assembly 80 from the motor housing 11. Compared to other fixed connection methods, the threaded connection makes disassembly of the blade assembly 80 effortless, allowing users to perform individual maintenance, replacement, or cleaning of the blade assembly 80, reducing the maintenance cost and difficulty of the food processor.

[0065] In one embodiment, the blade 82 and the threaded sleeve 81 are made of metal and are integrally formed. Metal materials typically possess high strength and hardness, capable of withstanding significant impacts and friction during cooking. The metal blade 82 and threaded sleeve 81 are not easily deformed or damaged. The integral forming process simplifies manufacturing, reduces assembly steps, improves production efficiency, and lowers labor costs.

[0066] Please continue to refer to this. Figure 6 , Figure 7 and combined Figure 3 In one embodiment, the external rotor motor assembly further includes a second sealing ring 72, which is clamped between the threaded sleeve 81 and the motor housing 11. The second sealing ring 72 can effectively prevent liquids and impurities from entering the gap between the motor housing 11 and the threaded sleeve 81, preventing them from penetrating into the motor interior.

[0067] Specifically, the outer wall of the motor housing 11 is provided with a second groove, and the second sealing ring 72 is filled in the second groove and abuts against the inner wall of the threaded sleeve 81.

[0068] In one embodiment, the external rotor motor assembly further includes a second balancing member 42, which may be block-shaped, but is not limited thereto. The second balancing member 42 is located between the threaded connection portion 113 and the second sealing ring 72, and is sandwiched between the threaded sleeve 81 and the motor housing 11.

[0069] The second balancing component 42 can adjust the mass distribution of the rotor, making the motor run more smoothly, reducing vibration and noise, and effectively adjusting the imbalance of the motor rotor, thus improving the overall operating quality of the motor. Furthermore, the second balancing component 42, together with the first balancing component 41, can adjust the mass distribution of the rotor, making the motor run more smoothly, reducing vibration and noise, and effectively adjusting the imbalance of the motor rotor. In addition, the weight and volume of the second balancing component 42 can be set as needed, and this application does not impose specific limitations on this. Furthermore, the second sealing ring 72 can seal the location of the second balancing component 42, preventing food from contacting the second balancing component 42.

[0070] This application also provides a food processor, including the external rotor motor assembly and cup assembly described in any of the above embodiments. The cup assembly has a food processing space, and the blade assembly 80 of the external rotor motor assembly is located in the food processing space to stir the food.

[0071] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. An outer rotor electric machine assembly characterized by, The outer rotor motor assembly comprises a rotor assembly (10), a stator assembly (20) and a sealing member (30). The rotor assembly (10) comprises a motor shell (11) and a magnetic member (12), wherein the magnetic member (12) is installed in the motor shell (11). The stator assembly (20) is installed in the motor shell (11) and comprises a fixing seat (21), a connecting shaft (22) and a stator winding (23), wherein the stator winding (23) is sleeved on the outer periphery of the connecting shaft (22) and arranged on the inner periphery of the magnetic member (12), the fixing seat (21) is fixedly connected with the connecting shaft (22), and covers the top of the motor shell (11). The sealing member (30) is clamped between the fixing seat (21) and the motor shell (11) and seals the gap between the fixing seat (21) and the motor shell (11).

2. An outer rotor motor assembly according to claim 1, wherein The sealing member (30) comprises a sealing seat (31) and a sealing structure, wherein the sealing seat (31) is sleeved on the outer periphery of the motor shell (11), and the sealing structure extends from the sealing seat (31) to the direction close to the fixing seat (21) and abuts against the fixing seat (21).

3. An outer rotor motor assembly according to claim 2, wherein The sealing structure comprises a plurality of sealing portions, and each of the plurality of sealing portions abuts against the fixing seat (21).

4. An outer rotor motor assembly according to claim 3, wherein The plurality of sealing portions comprises a first sealing portion (32) and a second sealing portion (33), wherein the first sealing portion (32) and the second sealing portion (33) both abut against the fixing seat (21), and the second sealing portion (33) is located on the inner side of the first sealing portion (32).

5. An outer rotor motor assembly according to claim 4, wherein The fixing seat (21) is provided with a sealing step, and the sealing step comprises a first side portion (211) and a first bottom portion (212) connected with each other, the first sealing portion (32) abuts against the first side portion (211), and the second sealing portion (33) abuts against the first bottom portion (212).

6. The outer rotor motor assembly of claim 2, wherein, An outer wall of the motor shell (11) is provided with a clamping seat (111), and the outer rotor motor assembly further comprises a first balancing member (41), wherein the first balancing member (41) is installed on the clamping seat (111) and supports the sealing seat (31).

7. An outer rotor motor assembly according to claim 6, wherein The outer rotor motor assembly further comprises a clamping ring (50), wherein the clamping ring (50) is sleeved on the outer periphery of the sealing seat (31) and the first balancing member (41).

8. An outer rotor motor assembly according to claim 7, wherein, The outer rotor motor assembly further comprises a first sealing ring (71), wherein the first sealing ring (71) is clamped between the clamping ring (50) and the motor shell (11), and the first sealing ring (71) is located on the side of the first balancing member (41) away from the sealing seat (31).

9. The outer rotor electric machine assembly of claim 1, wherein, The outer rotor motor assembly further comprises a cutter group (80), wherein the cutter group (80) comprises a threaded sleeve (81) and a cutter blade (82) arranged on the outer periphery of the threaded sleeve (81), one end of the motor shell (11) away from the fixing seat (21) is provided with a threaded connecting portion (113), and the threaded connecting portion (113) is threadedly connected into the threaded sleeve (81).

10. An outer rotor electric machine assembly as claimed in claim 9, characterised in that, The outer rotor motor assembly further comprises a second sealing ring (72), wherein the second sealing ring (72) is clamped between the threaded sleeve (81) and the motor shell (11); and / or, The material of the blade (82) and the threaded sleeve (81) is metal, and the blade (82) and the threaded sleeve (81) are integrally formed; and / or, The outer rotor motor assembly further comprises a second balance piece (42), and the second balance piece (42) is clamped between the threaded sleeve (81) and the motor shell (11).

11. A food processor, characterized in that, Comprise: The outer rotor motor assembly as claimed in any one of claims 1 to 10, further comprising a blade group (80) connected to the motor shell (11); and The cup body assembly has a food material processing space, and the blade group (80) is located in the food material processing space.

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