Food processor with stable structure

By improving the structure of the lower coupler of the food processing machine, adopting a brushless motor and combining it with a multi-point force and buffer design, the problems of stress concentration in the cantilever of the brushless motor lower coupler and movement of the host machine were solved, achieving stable connection and improved user experience.

CN223614691UActive Publication Date: 2025-12-02HONGYANG HOME APPLIANCES
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Patent Information

Application Number
CN202422699389.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-05
Publication Date
2025-12-02
Estimated Expiration
2034-11-05

AI Technical Summary

Technical Problem

The way the lower coupler of the brushless motor in the existing food processing machine is fixed to the housing causes stress concentration in the cantilever, making it prone to breakage. In addition, the main unit is easy to move when the cup assembly is separated, which affects the user experience.

Method used

By adopting a brushless motor and improving the structure of the lower coupler, multiple buckles are set around the lower coupler to engage with the mounting port of the housing. Combined with the first and second engagement gaps and the design of ring ribs and support ribs, multi-point force bearing and buffering are achieved to avoid stress concentration and main unit movement.

Benefits of technology

This improves the stability of the connection between the lower coupler and the housing, prevents cantilever breakage, reduces the impact of host machine movement, and enhances user experience and assembly efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a food processor with a stable structure, which relates to the field of life electric appliances and comprises a main machine and a detachable cup body assembly arranged above the main machine, the cup body assembly comprises a cup body and a brushless motor, an upper coupler electrically connected with the brushless motor is arranged at the bottom of the cup body, and the main machine comprises a shell, a power panel and a lower coupler. The lower coupler is provided with a plurality of buckles along the circumference, and the shell is provided with mounting ports matched with the buckles in a clamping manner, so that multi-point stress is realized, the stress is more uniform, and the condition that the cantilever is broken due to stress concentration in the plugging process of the upper coupler and the lower coupler caused by the relatively overlong cantilever is effectively avoided; and a first fit clearance is formed between the buckle and the inner wall of the shell below the mounting port, so that a certain buffer effect can be realized, the condition that the lower coupler is easily broken due to large stress generated on the buckle when the lower coupler is instantaneously subjected to tension can be reduced, and the connection and fit stability of the lower coupler and the shell is further improved.
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Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, specifically to a food processing machine with a stable structure. Background Technology

[0002] Existing food processors typically include a main unit and a detachable cup assembly located on top of the main unit. The cup assembly includes a cup containing a stirring element and a motor that drives the stirring element. When using the food processor, the user places food into the cup, and the stirring element rotates at high speed driven by the motor to process the food. To enable power transmission to the motor, an upper coupler is usually installed on the cup and a lower coupler is installed on the main unit. When the cup assembly is installed on the main unit, the upper and lower couplers couple to achieve power transmission and ensure the normal operation of the motor. With technological innovation, most manufacturers are upgrading the commonly used series motors to brushless motors to achieve quieter and more convenient operation. Since brushless motors require a separate power board for control, and to reduce the weight of the cup assembly, the power board is usually placed inside the main unit. Power and signal transmission are achieved through upper and lower couplers, and longer 8-pin couplers are used. However, the existing lower couplers are usually 4-pin or 6-pin couplers. When these couplers are installed on the main unit's housing, a cantilever is usually set on the coupler, and screws are passed through the cantilever and fastened to the housing to fix the coupler to the housing. When using a brushless motor, if the above installation method is used, due to the increased length of the lower coupler, when the cup assembly is separated from the main unit, the pulling force generated by the upper coupler on the lower coupler will cause the stress concentration at the cantilever to be more severe due to the increased torque. During long-term use, there is a risk of the cantilever breaking, which will cause the lower coupler to be unable to connect to the housing, making the food processing machine unable to function properly. Furthermore, with the achievement of lightweight design, when the cup assembly is lifted upwards to separate from the main unit, the pre-tension between the upper and lower couplers may pull the main unit upwards as well. After the main unit moves upwards with the cup assembly for a certain distance, it will fall back onto the table, causing an impact from the movement. Over time, this can lead to loose fits between the various structures of the main unit, resulting in abnormal noises and seriously affecting the user experience. Utility Model Content

[0003] The purpose of this utility model is to provide a food processing machine with a stable structure, in order to solve the problem that the existing installation method of the lower coupler used in food processing machines with brushless motors causes severe stress concentration and breakage of the cantilever fixed to the shell, and the main unit is prone to moving with the cup assembly.

[0004] To achieve the above objectives, this utility model provides a food processing machine with a stable structure, including a main unit and a detachable cup assembly located above the main unit. The cup assembly includes a cup body with an internal stirring element and a motor that drives the stirring element to rotate. The motor is a brushless motor. An upper coupler electrically connected to the brushless motor is provided at the bottom of the cup body. The main unit includes a housing, a power board located inside the housing, and a lower coupler electrically connected to the power board and capable of being plugged into the upper coupler. The lower coupler has multiple buckles around its circumference. The housing has an installation port that engages with the buckles. A first fitting gap is provided between the buckles and the inner wall of the housing below the installation port.

[0005] This application uses a brushless motor to reduce noise during food processing. The brushless motor's characteristics result in lower operating noise, thus reducing noise. Furthermore, the brushless motor allows for variable frequency control, enabling the food processor to adjust its speed according to different ingredients and processing conditions. This leads to better and more thorough processing, improving the texture and flavor of the food. Additionally, the smaller size of the brushless motor contributes to a more compact internal structure, significantly reducing the axial dimensions of the brushless motor relative to the cup body.

[0006] Meanwhile, the bottom of the cup body is equipped with an upper coupler that is electrically connected to the brushless motor, and the main unit is equipped with a lower coupler that works with the upper coupler. After the cup body assembly is installed on the main unit, the upper coupler and the lower coupler are coupled to realize the transmission of power and signals, thereby realizing the control of the brushless motor. Compared with the method of placing the power board inside the cup body assembly, the overall weight of the cup body assembly can be greatly reduced, making it more convenient and effortless for users to pick up the cup body assembly, thus improving the user experience.

[0007] Furthermore, the lower coupler has multiple clips around its circumference, and the housing has mounting ports that engage with these clips. Compared to existing methods that use a cantilever on the lower coupler and screws to connect it to the housing, this design offers several advantages. First, the multiple clips engaging with the mounting ports allow for force distribution in multiple directions between the lower coupler and the housing. This ensures effective force dispersion when the user inserts or removes the cup assembly, resulting in more even force distribution. This effectively prevents stress concentration at the cantilever, which can lead to breakage during insertion or removal of the upper and lower couplers, and ultimately separation of the lower coupler from the housing. This ensures the stability of the connection between the lower coupler and the housing and improves the overall structural stability. Second, during assembly, the clips engage with the mounting ports simply by pressing down, eliminating the need for additional tooling and making assembly more convenient and efficient. In addition, a first fitting gap is provided between the buckle and the inner wall of the housing below the mounting port. On the one hand, when the upper coupler separates from the lower coupler and exerts an upward pulling force on the lower coupler, especially when the user tilts and lifts the cup assembly upward, the first fitting gap can provide a certain buffering effect. This can reduce the possibility of the lower coupler being subjected to a large stress at the buckle due to the instantaneous pulling force, which could easily cause it to break. This further improves the stability of the connection between the lower coupler and the housing. On the other hand, when the cup assembly moves upward, the first fitting gap allows the lower coupler to move upward a certain distance when the upper coupler is pulled upward. This can reduce or prevent the main unit from moving upward with the cup assembly, and prevent the main unit from moving too high with the cup assembly and falling back onto the table, which could cause the main unit to suffer a large impact. This ensures the structural stability of the entire machine.

[0008] In a preferred embodiment of a structurally stable food processing machine, a second mating gap is provided between the buckle and the mounting port.

[0009] By providing a second fitting gap between the buckle and the mounting port, when the upper coupler separates from the lower coupler and exerts an upward pulling force on the lower coupler, the lower coupler can achieve a certain displacement buffer through the second fitting gap after being subjected to a component force in the lateral direction. This reduces the impact on the buckle, further enhances the protection of the buckle, and further improves the stability of the connection between the lower coupler and the housing.

[0010] In a preferred embodiment of a structurally stable food processing machine, the width L1 of the first mating clearance satisfies: 0.1 ≤ L1 ≤ 0.3 mm; or,

[0011] A second fitting gap is provided between the buckle and the mounting port, and the width L2 of the second fitting gap satisfies: 0.1≤L2≤0.3mm.

[0012] By setting the width of the first mating gap and the width of the second mating gap to 0.1mm to 0.3mm, the situation where the width of the first mating gap and the second mating gap is too narrow and cannot play a buffering role, resulting in a large force on the buckle, is avoided; at the same time, the situation where the width of the first mating gap or the second mating gap is too wide is avoided, resulting in an unstable connection between the lower coupler and the housing.

[0013] In a preferred embodiment of a structurally stable food processing machine, a downwardly extending annular rib is provided at the mounting port, and a snap fastener is engaged with the bottom wall of the annular rib.

[0014] By providing a downward-extending ring rib at the mounting port, and having the snap-fit ​​engage with the bottom wall of the ring rib, the mounting port can achieve a larger contact area with the lower coupler through the ring rib. This increases the contact area between the two, which helps to enhance the limiting effect of the mounting port on the lower coupler. At the same time, when the upper coupler separates from the lower coupler, if the lower coupler is subjected to a lateral force, the ring rib can limit the lower coupler, thereby reducing the torque on the snap-fit ​​and further enhancing the protection of the snap-fit. This, in turn, further improves the stability of the connection between the lower coupler and the housing.

[0015] In a preferred embodiment of a structurally stable food processing machine, the lower coupler includes a body and a buckle extending downward from the body, with a portion of the body coinciding with the annular rib in the lateral direction.

[0016] By setting part of the body to coincide with the ring rib in the lateral direction, when the lower coupler is subjected to the lateral component force, the buckle can bear part of the lateral force, and the body can also bear part of the lateral force, thereby realizing the dispersion of force and effectively avoiding the lateral force being completely concentrated on the buckle, which would cause the buckle to be under great force and break, thus further improving the protection of the buckle.

[0017] In a preferred embodiment of a structurally stable food processing machine, a shock-absorbing pad is provided between the lower coupler and the housing.

[0018] By providing a shock-absorbing pad between the lower coupler and the housing, when the upper coupler and the lower coupler are separated, the lower coupler achieves soft contact with the housing through the shock-absorbing pad during the force process, which can avoid damage to the lower coupler caused by hard contact between the two, and further enhance the protection of the lower coupler.

[0019] In a preferred embodiment of a structurally stable food processing machine, the lower coupler sidewall is provided with a support rib extending laterally outward, and a shock-absorbing pad is provided between the support rib and the top wall of the housing.

[0020] By incorporating laterally extending outward support ribs on the sidewall of the lower coupler, the lower coupler is supported by the housing, enhancing the stability of their engagement. Simultaneously, when the lower coupler is under stress, the support ribs also provide some support, distributing the force and preventing torque concentration on the latch, which could lead to excessive stress and breakage. This further enhances the protection of the latch. Furthermore, shock-absorbing pads are placed between the support ribs and the top wall of the housing, achieving soft contact between the support ribs and the housing. This allows the support ribs to be cushioned during stress and movement, preventing excessive stress and breakage of the support ribs.

[0021] In a preferred embodiment of a structurally stable food processing machine, the top wall of the housing is further provided with a positioning ring that extends upward and surrounds the outer periphery of the lower coupler.

[0022] By providing an upwardly extending positioning ring on the top wall of the housing and surrounding the lower coupler, the housing can limit the lower coupler laterally through the positioning ring. This allows the lower coupler to be limited not only by the latch but also by the positioning ring when subjected to lateral forces, thereby reducing the force on the latch and further preventing the latch from breaking due to excessive force, thus improving the stability of the connection between the lower coupler and the housing.

[0023] In a preferred embodiment of a structurally stable food processing machine, a reinforcing rib is provided on the side of the buckle away from the mounting port.

[0024] By providing reinforcing ribs on the side of the buckle away from the mounting opening, the strength of the buckle is further improved to prevent it from breaking when subjected to large forces, and to further improve the stability of the connection between the lower coupler and the housing. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0026] Figure 1 This is a cross-sectional view of a food processing machine according to one embodiment of the present invention;

[0027] Figure 2 This is a cross-sectional view of the host in one embodiment of the present invention;

[0028] Figure 3 for Figure 2 Enlarged view of section A in the middle;

[0029] Figure 4 This is a schematic diagram of the host structure in one embodiment of the present invention;

[0030] Figure 5 for Figure 4 Enlarged view of section B;

[0031] Figure 6 This is a schematic diagram of the structure of the lower coupler in one embodiment of the present invention.

[0032] List of components and reference numerals:

[0033] 1-Main unit, 11-Housing shell, 111-Mounting port, 112-Positioning ring, 113-Ring rib; 2-Cup body; 3-Brushless motor; 4-Agitator; 5-Lower coupler, 51-Support rib, 52-Snap fastener, 53-Body body, 54-Reinforcing rib; 6-Power board; 7-Shock damping pad; 8-First mating clearance; 9-Second mating clearance. Detailed Implementation

[0034] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0035] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0036] like Figures 1 to 6 As shown, this utility model provides a food processing machine with a stable structure, including a main unit 1 and a detachable cup assembly located above the main unit 1. The cup assembly includes a cup body 2 with an internal stirring element 4 and a motor that drives the stirring element 4 to rotate. The motor is a brushless motor 3. The bottom of the cup body 2 is provided with an upper coupler that is electrically connected to the brushless motor 3. The main unit 1 includes a housing 11, a power board 6 located inside the housing 11, and a lower coupler 5 that is electrically connected to the power board 6 and can cooperate with the upper coupler. The lower coupler 5 is provided with a plurality of buckles 52 around its periphery. The housing 11 is provided with an installation port 111 that engages with the buckles 52. A first mating gap 8 is provided between the buckles 52 and the inner wall of the housing 11 below the installation port 111.

[0037] This application sets the motor as a brushless motor 3. By utilizing the characteristics of the brushless motor 3, the noise of the motor rotation is lower when the user is processing food ingredients in the food processor, thus achieving a noise reduction effect. At the same time, the brushless motor 3 can achieve frequency conversion control, which allows the food processor to control the output speed of the brushless motor 3 according to different ingredients and processing processes. This results in better and more thorough processing of the ingredients, improving the texture of the food. Furthermore, the brushless motor 3 occupies less space, which helps to improve the compactness of the internal structure of the whole machine and greatly reduces the axial dimensions of the brushless motor 3 and the cup body 2.

[0038] Meanwhile, the bottom of the cup body 2 is equipped with an upper coupler that is electrically connected to the brushless motor 3, and the main unit 1 is equipped with a lower coupler 5 that cooperates with the upper coupler. After the cup body assembly is installed on the main unit 1, the upper coupler and the lower coupler 5 are coupled to realize the transmission of power and signals, so as to realize the control of the brushless motor 3. Compared with the method of setting the power board 6 inside the cup body assembly, the overall weight of the cup body assembly can be greatly reduced, making it more convenient and effortless for users to pick up the cup body assembly, thus improving the user experience.

[0039] Furthermore, the lower coupler 5 has multiple latches 52 around its circumference, and the housing 11 has an installation port 111 that engages with the latches 52. Compared to the existing method of setting a cantilever on the lower coupler 5 and connecting it to the housing 11 with screws, on the one hand, the engagement of multiple latches 52 with the installation port 111 enables the lower coupler 5 and the housing 11 to bear force in multiple directions. This allows the force to be effectively distributed when the user inserts or removes the cup assembly, achieving multi-point force distribution and more uniform force distribution. This effectively avoids stress concentration at the cantilever during the insertion or removal of the upper coupler and the lower coupler 5 due to the relative length of the cantilever, which could cause it to break and ultimately separate from the housing 11. This ensures the stability of the connection between the lower coupler 5 and the housing 11 and improves the stability of the overall structure. On the other hand, when assembling the lower coupler 5, the latches 52 and the installation port 111 can be engaged simply by pressing down, eliminating the need for additional tooling to install the lower coupler 5. This makes assembly more convenient and faster, and helps to improve assembly efficiency. In addition, a first mating gap 8 is provided between the buckle 52 and the inner wall of the housing 11 below the mounting port 111. On the one hand, when the upper coupler and the lower coupler 5 are separated and an upward pulling force is generated on the lower coupler 5, especially when the user tilts and lifts the cup assembly upward, the first mating gap 8 can achieve a certain buffering effect, which can reduce the situation where the lower coupler 5 is subjected to a large stress at the buckle 52 due to the instantaneous pulling force, which may cause it to break easily, and further improve the stability of the connection between the lower coupler 5 and the housing 11. On the other hand, when the cup assembly moves upward, with the help of the first mating gap 8, when the upper coupler is pulled upward, the lower coupler 5 can move upward a certain distance, which can reduce or avoid the main unit 1 moving upward with the cup assembly, and prevent the main unit 1 from moving too high with the cup assembly and falling back to the table, causing the main unit to suffer a large impact, thus ensuring the structural stability of the entire machine.

[0040] It should be noted that this application does not specifically limit the setting method of the buckle 52. As one preferred option in this application, such as Figure 6As shown, the lower coupler 5 is rectangular, and a buckle 52 is provided on each side. Specifically, two buckles 52 are provided on the long side of the lower coupler 5, and one buckle 52 is provided on the short side of the rectangle. Of course, the buckles 52 in this application are not limited to the above-mentioned arrangement, and more buckles 52 can be provided on each side, which will not be elaborated here.

[0041] As a preferred embodiment of this application, such as Figure 2 , Figure 3 As shown, a second mating gap 9 is provided between the buckle 52 and the mounting port 111.

[0042] By providing a second mating gap 9 between the buckle 52 and the mounting port 111, when the upper coupler separates from the lower coupler 5 and exerts an upward pulling force on the lower coupler 5, the lower coupler 5 can achieve a certain displacement buffer through the second mating gap 9 after being subjected to a component force in the lateral direction. This can reduce the impact on the buckle 52, further enhance the protection of the buckle 52, and further improve the stability of the connection between the lower coupler 5 and the housing 11.

[0043] It should be noted that this application does not specifically limit the width of the first fitting gap 8 and the second fitting gap 9. As a preferred embodiment of this application, for example... Figure 3 As shown, the width L1 of the first fitting clearance 8 satisfies: 0.1≤L1≤0.3mm; the width L2 of the second fitting clearance 9 satisfies: 0.1≤L2≤0.3mm.

[0044] By setting the width of the first mating gap 8 and the width of the second mating gap 9 to 0.1mm to 0.3mm, the situation where the width of the first mating gap 8 and the second mating gap 9 is too narrow and cannot play a buffering role, resulting in the buckle 52 being subjected to a large force, is avoided; at the same time, the situation where the width of the first mating gap 8 or the second mating gap 9 is too wide is avoided, resulting in the lower coupler 5 being unstable in connection with the housing 11.

[0045] As a preferred embodiment of this application, such as Figure 3 As shown, a downwardly extending ring rib 113 is provided at the installation port 111, and the buckle 52 is engaged with the bottom wall of the ring rib 113.

[0046] By providing a downwardly extending annular rib 113 at the mounting port 111, and having the buckle 52 engaged with the bottom wall of the annular rib 113, the mounting port 111 can achieve a larger contact area with the lower coupler 5 through the annular rib 113, thereby increasing the contact area between the two and helping to improve the limiting effect of the mounting port 111 on the lower coupler 5. At the same time, when the upper coupler is separated from the lower coupler 5, if the lower coupler 5 is subjected to a lateral component force, the annular rib 113 can limit the lower coupler 5, thereby reducing the torque on the buckle 52, which helps to further improve the protection of the buckle 52, and further improves the stability of the connection and cooperation between the lower coupler 5 and the housing 11.

[0047] As a preferred embodiment of this application, such as Figure 3 As shown, the lower coupler 5 includes a body 53 and a buckle 52 extending downward from the body 53, and part of the body 53 overlaps with the ring rib 113 in the lateral direction.

[0048] By setting part of the body 53 to overlap with the ring rib 113 in the lateral direction, when the lower coupler 5 is subjected to the lateral component force, the buckle 52 can bear part of the lateral force, and the body 53 can also bear part of the lateral force, thereby realizing the dispersion of force and effectively avoiding the lateral force being completely concentrated on the buckle 52, which would cause the buckle 52 to be subjected to large force and break, thus further improving the protection of the buckle 52.

[0049] As a preferred embodiment of this application, such as Figure 2 As shown, a shock-absorbing pad 7 is provided between the lower coupler 5 and the housing 11.

[0050] By providing a shock-absorbing pad 7 between the lower coupler 5 and the housing 11, when the upper coupler and the lower coupler 5 are separated, the lower coupler 5 achieves soft contact with the housing 11 through the shock-absorbing pad 7 during the force process, which can avoid the situation where the lower coupler 5 is damaged due to hard contact between the two, and further enhance the protection of the lower coupler 5.

[0051] It should be noted that this application does not specifically limit the placement of the shock-absorbing pad 7. As one preferred embodiment of this application, such as... Figure 2 As shown, the lower coupler 5 has a support rib 51 extending laterally outward on its side wall, and the shock-absorbing pad 7 is located between the support rib 51 and the top wall of the housing 11.

[0052] By providing a laterally outward extending support rib 51 on the side wall of the lower coupler 5, the lower coupler 5 is supported on the housing 11 by the support rib 51, improving the stability of the two components. At the same time, when the lower coupler 5 is under force, the support rib 51 can also provide a certain degree of support, dispersing the force and preventing the torque from concentrating on the buckle 52, which could lead to excessive stress and breakage of the buckle 52, thus further enhancing the protection of the buckle 52. Meanwhile, the shock-absorbing pad 7 is provided between the support rib 51 and the top wall of the housing 11, achieving soft contact between the support rib 51 and the housing 11. This allows the support rib 51 to be buffered when under force and during movement by the shock-absorbing pad 7, preventing the support rib 51 from being under excessive stress and breaking.

[0053] As a preferred embodiment of this application, such as Figure 2 As shown, the top wall of the housing 11 is also provided with a positioning ring 112 that extends upward and surrounds the lower coupler 5.

[0054] By providing an upwardly extending positioning ring 112 on the top wall of the housing 11 and surrounding the lower coupler 5, the housing 11 can limit the lower coupler 5 laterally through the positioning ring 112. Thus, when the lower coupler 5 is subjected to lateral force, it can be limited not only by the buckle 52, but also by the positioning ring 112, thereby reducing the force on the buckle 52 and further preventing the buckle 52 from breaking due to excessive force, thus improving the stability of the connection between the lower coupler 5 and the housing 11.

[0055] As a preferred embodiment of this application, such as Figure 4 , Figure 5 , Figure 6 As shown, the buckle 52 has a reinforcing rib 54 on the side away from the mounting port 111.

[0056] By providing a reinforcing rib 54 on the side of the buckle 52 away from the mounting port 111, the strength of the buckle 52 is further improved to avoid breakage when subjected to large forces, and to further improve the stability of the connection between the lower coupler 5 and the housing 11.

[0057] It should be noted that this application does not specifically limit the location of the reinforcing rib 54. As one preferred embodiment of this application, such as... Figure 6 As shown, the lower coupler 5 includes a body 53 and a buckle 52 extending downward from the body 53. The reinforcing rib 54 extends upward and inward from the bottom end of the buckle 52 to the bottom wall of the body 53.

[0058] The technical solutions protected by this utility model are not limited to the above embodiments. It should be noted that any combination of the technical solutions of any embodiment with one or more other embodiments is within the protection scope of this utility model. Although this utility model has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A structurally stable food processing machine, comprising a main unit and a detachable cup assembly disposed above the main unit, the cup assembly comprising a cup body with an internal stirring element and a motor for driving the stirring element to rotate, characterized in that, The motor is a brushless motor. The bottom of the cup body is provided with an upper coupler that is electrically connected to the brushless motor. The main unit includes a housing, a power board disposed in the housing, and a lower coupler that is electrically connected to the power board and can be plugged into the upper coupler. The lower coupler is provided with multiple buckles around its circumference. The housing is provided with an installation port that engages with the buckles. A first mating gap is provided between the buckles and the inner wall of the housing below the installation port.

2. The structurally stable food processing machine according to claim 1, characterized in that, A second mating gap is provided between the buckle and the mounting port.

3. A structurally stable food processing machine according to claim 1 or 2, characterized in that, The width L1 of the first fitting clearance satisfies: 0.1 ≤ L1 ≤ 0.3 mm; or, A second fitting gap is provided between the buckle and the mounting port, and the width L2 of the second fitting gap satisfies: 0.1≤L2≤0.3mm.

4. The structurally stable food processing machine according to claim 1, characterized in that, The mounting opening is provided with a downwardly extending ring rib, and the buckle is engaged with the bottom wall of the ring rib.

5. A structurally stable food processing machine according to claim 4, characterized in that, The lower coupler includes a body and a buckle extending downward from the body, with a portion of the body overlapping the annular rib in the lateral direction.

6. A structurally stable food processing machine according to claim 1, characterized in that, A shock-absorbing pad is provided between the lower coupler and the housing.

7. A structurally stable food processing machine according to claim 6, characterized in that, The lower coupler sidewall is provided with a support rib extending laterally outward, and the shock-absorbing pad is provided between the support rib and the top wall of the housing.

8. A structurally stable food processing machine according to claim 1, characterized in that, The top wall of the housing is also provided with a positioning ring that extends upward and surrounds the lower coupler.

9. A structurally stable food processing machine according to claim 1, characterized in that, The buckle has a reinforcing rib on the side away from the mounting port.

10. A structurally stable food processing machine according to claim 9, characterized in that, The lower coupler includes a body and a buckle extending downward from the body, and the reinforcing rib extends obliquely upward and inward from the bottom end of the buckle to the bottom wall of the body.