A food processor that is easy to produce

Abstract

The utility model discloses a food processor convenient to production, including the cup body of being equipped with the rubbing crusher and the brushless motor of driving rubbing crusher rotation, and the brushless motor includes the stator and is located stator top rotor, and the rotor includes the rotor body of being board -shaped and is fixed on the permanent magnet of rotor body, and the rotor body is connected through the knife shaft and rubbing crusher transmission, and the permanent magnet is the integral type magnetic ring of being ring -shaped, and the rotor body is equipped with the limiting structure of surrounding in permanent magnet outside, and the integral type magnetic ring can install on the rotor body one time, has reduced the assembly step, has improved production efficiency, and can promote the coaxial degree with rotor body, ensures the stability when permanent magnet rotates with rotor body, when permanent magnet rotates with rotor body, and the centrifugal force that ring -shaped permanent magnet receives in each direction is same, and realizes offset in the diametrically opposite direction, and therefore permanent magnet can more stable fixed on the rotor body.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, specifically to a food processing machine that is easy to use in production. Background Technology

[0002] Existing food processors typically consist of a cup with a grinding chamber, a grinding device inside the grinding chamber, and a motor that drives the grinding device. When using the food processor, the user places the food into the grinding chamber, and the motor rotates at high speed, driving the grinding device to process the food. Most existing motors are brushed motors, but these produce significant noise and vibration during operation, resulting in a poor user experience. To improve processing results, many manufacturers replace brushless motors with brushless motors, which offer numerous advantages such as longer lifespan, lower vibration, lower noise, and no carbon powder pollution. For example, Chinese patent CN202411859648.4 discloses a shaft-type flux motor structure for stirring appliances. The motor includes a stator and a rotor that are adapted to each other. The rotor includes a rotor body rotatably mounted on a second carrier via a main bearing, a shaft fixed to the upper end of the rotor body, and multiple magnets fixed to the lower end face of the rotor body, evenly distributed circumferentially and corresponding one-to-one with the coil windings. The lower end face of the rotor body has multiple grooves evenly spaced circumferentially, in which the magnets are embedded and fixed, with their lower surfaces exposed outside the lower end face of the rotor body. As shown in the accompanying drawings, each magnet is adjacently embedded in a groove. Although this type of motor can reduce noise, during motor assembly, each magnet needs to be individually installed into the groove, making the installation very cumbersome and inefficient. Furthermore, due to manufacturing and assembly errors, the magnets, once installed in the grooves, cannot form a perfect circle, and their coaxiality with the rotor body is poor. This results in uneven mass distribution across the rotor, making it prone to vibration during high-speed rotation. In addition, uneven magnet thickness further exacerbates rotor end-face runout, causing unstable motor rotation and severely impacting the user experience. Utility Model Content

[0003] The purpose of this utility model is to provide a food processing machine that is easy to produce, in order to solve the problem in existing food processing machines that, under the premise of improving the overall performance by using a brushless motor, how to avoid the problem of low assembly efficiency and low coaxiality of the motor with the rotor body, resulting in large vibration when the rotor rotates at high speed, which is caused by the need to install each magnet separately into the groove of the rotor body during the assembly process.

[0004] To achieve the above objectives, this utility model provides a food processing machine that is easy to produce, including a cup body with a crushing device inside and a brushless motor that drives the crushing device to rotate. The brushless motor includes a stator and a rotor located above the stator. The rotor includes a plate-shaped rotor body and a permanent magnet fixed on the rotor body. The rotor body is connected to the crushing device through a cutter shaft. The permanent magnet is an integrated magnetic ring in the shape of a ring. The rotor body is provided with a limiting structure surrounding the permanent magnet.

[0005] This application sets the rotor of the brushless motor to include a plate-shaped rotor body and multiple permanent magnets fixed on the rotor body. The rotor body is connected to the crushing device through a cutter shaft, so that the rotor body can directly drive the crushing device through the cutter shaft. This eliminates the need for a transmission mechanism between the rotor and the crushing device, thereby simplifying the overall structure, improving transmission efficiency, and making the internal structure of the whole machine more compact and reducing the size of the machine. Meanwhile, the permanent magnet is a one-piece ring-shaped magnetic ring. Compared to the existing method of circumferentially arranging and fixing multiple permanent magnets, the one-piece magnetic ring can be installed on the rotor body in one go, reducing assembly steps, improving production efficiency, and enhancing coaxiality with the rotor body. This ensures the stability of the permanent magnet as it rotates with the rotor body, reducing the possibility of low coaxiality and excessive vibration caused by large assembly errors during the assembly of multiple permanent magnets. This effectively improves the stability of rotor rotation. Furthermore, when the permanent magnet rotates with the rotor body, the centrifugal force experienced by the ring-shaped permanent magnet is the same in all directions and cancels out in opposite radial directions. Therefore, the permanent magnet can be more firmly fixed to the rotor body, avoiding loosening or even being thrown off due to uneven centrifugal force, further improving the stability of the connection between the permanent magnet and the rotor body. Moreover, the uniform thickness of the one-piece permanent magnet reduces end-face runout, further enhancing its stability. In addition, the rotor body is provided with a limiting structure surrounding the permanent magnet, which enables the permanent magnet to be radially limited by the limiting structure, preventing radial displacement during high-speed rotation and further enhancing the structural stability of the rotor.

[0006] In a preferred embodiment of a food processing machine that facilitates production, the limiting structure is a limiting rib surrounding the outside of the permanent magnet.

[0007] By setting the limiting structure as a limiting rib surrounding the outside of the permanent magnet, the limiting rib can achieve radial limiting of the permanent magnet, so that the permanent magnet is contained in the groove formed by the limiting rib. This ensures that the permanent magnet will not be displaced due to centrifugal force when rotating at high speed. At the same time, it can effectively reduce noise, improve the stability of operation, reduce mechanical wear caused by the displacement of the permanent magnet, and extend the service life of the equipment.

[0008] In a preferred embodiment of a food processing machine that facilitates production, the limiting ribs are arranged in a closed ring.

[0009] By setting the limiting ribs to be closed rings, the limiting ribs can achieve radial limiting in all directions of the permanent magnet, ensuring that the permanent magnet is evenly stressed when rotating at high speed, avoiding local stress concentration, further reducing vibration and noise, improving the stability and reliability of the whole machine operation, and extending the service life of the equipment.

[0010] In a preferred embodiment of a food processing machine that facilitates production, the limiting ribs are divided into multiple segments along the circumference of the rotor body.

[0011] By setting the limiting ribs to be divided into multiple segments along the circumference of the rotor body, the permanent magnet can be limited by the limiting ribs, while the outer wall of the permanent magnet can be partially exposed to the air, increasing the heat dissipation area and allowing the cold air to directly dissipate heat from the permanent magnet, thereby improving the heat dissipation effect of the permanent magnet, further reducing the temperature of the permanent magnet, and ensuring its magnetic stability.

[0012] In a preferred embodiment of a food processing machine that facilitates production, the height of the limiting rib is no higher than half the height of the permanent magnet.

[0013] By setting the height of the limiting rib to no more than half the height of the permanent magnet, it is ensured that the limiting rib will not interfere with the magnetic field of the permanent magnet while effectively limiting it. This avoids the situation where the permanent magnet is short-circuited and leaks magnetic flux due to excessively high limiting rib height, ensuring the magnetic field strength and stability of the permanent magnet, and further improving the working performance and durability of the whole machine.

[0014] In a preferred embodiment of a food processing machine that facilitates production, the limiting structure includes a groove formed by a downward indentation of the bottom wall of the rotor body, in which the rotor body is fitted.

[0015] By setting the limiting structure to include a groove formed by the downward indentation of the bottom wall of the rotor body, and the rotor body being embedded in the groove, the permanent magnet is not only limited by the groove on the outside, but also on the inside, which makes the coaxiality of the permanent magnet and the rotor body higher and further improves the stability of the permanent magnet when rotating with the rotor body.

[0016] In a preferred embodiment of a food processing machine that facilitates production, the cutter shaft is provided with a transmission part that is connected to the rotor body, and the permanent magnet is provided with a clearance hole to avoid the transmission part.

[0017] By providing clearance holes in the permanent magnet to avoid the transmission components, the clearance holes can effectively avoid the transmission components, prevent mechanical wear caused by friction, and ensure the smooth operation of the transmission system, thereby further optimizing the working efficiency and stability of the whole machine.

[0018] In a preferred embodiment of a food processing machine that facilitates production, the transmission unit includes a transmission plate fixed in a clearance hole and a flat shaft extending upward from the transmission plate and connected to a crushing device, and the rotor body is provided with a flat hole through which the flat shaft passes.

[0019] By configuring the transmission unit as including a transmission plate fixed in the clearance hole and a flat shaft extending upward from the transmission plate and connected to the crushing device, and the rotor body having a flat hole for the flat shaft to pass through, the cutter shaft can be axially limited with the rotor body through the transmission plate. At the same time, the torque transmission from the rotor body to the cutter shaft is achieved through the cooperation of the flat shaft and the flat hole, ensuring that the cutter shaft is stable and reliable when rotating at high speed.

[0020] In a preferred embodiment of a food processing machine that facilitates production, the bottom wall of the rotor body is further provided with an annular rib that abuts against the transmission part.

[0021] By providing an annular rib on the bottom wall of the rotor body that abuts against the transmission part, the permanent magnet and the transmission part can be isolated by the annular rib, avoiding direct contact between the transmission part and the permanent magnet that would cause friction noise. At the same time, the annular rib can also be used to radially limit the transmission part, further improving the stability of the connection between the transmission part and the rotor body.

[0022] In a preferred embodiment of a food processing machine that facilitates production, the permanent magnet is bonded and fixed to the rotor body; or,

[0023] The permanent magnet is welded and fixed to the limiting structure.

[0024] By bonding and fixing the permanent magnet to the rotor body, the assembly efficiency and stability of the permanent magnet are further improved.

[0025] By welding and fixing the permanent magnet to the limiting structure, not only is the overall structural strength of the permanent magnet and the rotor body enhanced, but the vibration resistance of the permanent magnet during high-speed operation is also further improved. This effectively reduces noise and magnetic performance attenuation caused by vibration, ensuring the stability and reliability of the food processing machine under long-term high-intensity working conditions. Attached Figure Description

[0026] 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:

[0027] Figure 1 This is a schematic diagram of the structure of a food processing machine in one embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the rotor and stator structure in one embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the rotor structure in one embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the rotor body in one embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the permanent magnet structure in one embodiment of the present invention;

[0032] Figure 6 This is a cross-sectional view of the rotor in one embodiment of the present invention;

[0033] Figure 7 This is a cross-sectional view of the rotor at another angle in one embodiment of this utility model;

[0034] Figure 8 This is a schematic diagram of the rotor body in another embodiment of the present invention;

[0035] Figure 9 This is a cross-sectional view of the rotor and crushing device and other components in one embodiment of the present invention.

[0036] Figure 10 This is a schematic diagram of the structure of a food processing machine in another embodiment of the present invention;

[0037] Figure 11 This is a schematic diagram of the structure of a food processing machine in another embodiment of the present invention.

[0038] List of components and reference numerals:

[0039] 1-Cup body, 11-Cup body, 12-Cup seat; 2-Main unit; 3-Rotor, 31-Rotor body, 311-Limiting rib, 312-Annular rib, 313-Flat hole, 314-Allowing hole, 32-Permanent magnet; 4-Stator; 5-Crushing device; 6-Cutter shaft, 61-Transmission unit. Detailed Implementation

[0040] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0041] 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.

[0042] like Figures 1 to 11As shown, this utility model provides a food processing machine that is easy to produce, including a cup body 1 with a crushing device 5 inside and a brushless motor that drives the crushing device 5 to rotate. The brushless motor includes a stator 4 and a rotor 3 located above the stator 4. The rotor 3 includes a plate-shaped rotor body 31 and a permanent magnet 32 ​​fixed on the rotor body 31. The rotor body 31 is connected to the crushing device 5 through a cutter shaft 6. The permanent magnet 32 ​​is an integrated magnetic ring in the shape of a ring. The rotor body 31 is provided with a limiting structure surrounding the permanent magnet 32.

[0043] This application sets the rotor 3 of the brushless motor to include a plate-shaped rotor body 31 and multiple permanent magnets 32 fixed on the rotor body 31. The rotor body 31 is connected to the crushing device 5 through the cutter shaft 6, so that the rotor body 31 can directly drive the crushing device 5 through the cutter shaft 6. This eliminates the need for a transmission mechanism between the rotor 3 and the crushing device 5, thereby simplifying the overall structure, improving transmission efficiency, and making the internal structure of the whole machine more compact and reducing the size of the machine. Meanwhile, the permanent magnet 32 ​​is an integrated ring-shaped magnetic ring. Compared with the existing method of circumferentially arranging and fixing multiple permanent magnets 32, on the one hand, the integrated magnetic ring can be installed on the rotor body 31 at one time, reducing assembly steps, improving production efficiency, and improving the coaxiality with the rotor body 31. This ensures the stability of the permanent magnet 32 ​​when rotating with the rotor body 31, reducing the situation where the overall coaxiality with the rotor body 31 is low due to large assembly errors during the assembly of multiple permanent magnets 32, resulting in large vibrations during rotation, and effectively improving the rotational stability of the rotor 3. On the other hand, when the permanent magnet 32 ​​rotates with the rotor body 31, the centrifugal force on the ring-shaped permanent magnet 32 ​​is the same in all directions and cancels out in opposite radial directions. Therefore, the permanent magnet 32 ​​can be more firmly fixed on the rotor body 31, avoiding loosening or even being thrown out due to uneven centrifugal force, further improving the stability of the connection and cooperation between the permanent magnet 32 ​​and the rotor body 31. Furthermore, the uniform thickness of the integrated permanent magnet 32 ​​reduces end-face runout and further enhances its stability. In addition, the rotor body 31 is provided with a limiting structure surrounding the permanent magnet 32, which limits the permanent magnet 32 ​​radially, preventing radial displacement during high-speed rotation and further enhancing the structural stability of the rotor 3.

[0044] It should be noted that this application does not specifically limit the limiting structure, which can be any of the following embodiments:

[0045] Example 1: As Figure 3 As shown, in this embodiment, the limiting structure is a limiting rib 311 surrounding the outside of the permanent magnet 32.

[0046] By setting the limiting structure as a limiting rib 311 surrounding the outside of the permanent magnet 32, the limiting rib 311 can achieve radial limiting of the permanent magnet 32, so that the permanent magnet 32 ​​is accommodated in the groove formed by the limiting rib 311. This ensures that the permanent magnet 32 ​​will not be displaced due to centrifugal force when rotating at high speed. At the same time, it can effectively reduce noise, improve the stability of operation, reduce mechanical wear caused by the displacement of the permanent magnet 32, and extend the service life of the equipment.

[0047] It should be further noted that this application does not specifically limit the structure of the lower limiting rib 311 in this embodiment, and it can be any of the following embodiments:

[0048] Implementation method 1: such as Figure 3 , Figure 4 As shown, in this embodiment, the limiting rib 311 is arranged in a closed ring.

[0049] By setting the limiting rib 311 to a closed ring, the limiting rib 311 can achieve radial limiting in all directions of the permanent magnet 32, ensuring that the permanent magnet 32 ​​is subjected to uniform force when rotating at high speed, avoiding local stress concentration, further reducing vibration and noise, improving the stability and reliability of the whole machine operation, and extending the service life of the equipment.

[0050] Implementation method 2: such as Figure 8 As shown, the limiting rib 311 is divided into multiple segments along the circumference of the rotor body 31.

[0051] By setting the limiting rib 311 to be divided into multiple segments along the circumference of the rotor body 31, the permanent magnet 32 ​​can be limited by the limiting rib 311, while the outer wall of the permanent magnet 32 ​​can also be partially exposed to the air, increasing the heat dissipation area and allowing the cold air to directly dissipate heat from the permanent magnet 32, thereby improving the heat dissipation effect of the permanent magnet 32, further reducing the temperature of the permanent magnet 32, and ensuring its magnetic stability.

[0052] As a preferred embodiment, such as Figure 7 As shown, the height of the limiting rib 311 is no higher than half the height of the permanent magnet 32.

[0053] By setting the height of the limiting rib 311 to no more than half the height of the permanent magnet 32, it is ensured that the limiting rib 311 will not interfere with the magnetic field of the permanent magnet 32 ​​while effectively limiting the position. This avoids the situation where the height of the limiting rib 311 is too high, which may cause the permanent magnet 32 ​​to short-circuit and leak magnetic flux. This ensures the magnetic field strength and stability of the permanent magnet 32, and further improves the working performance and durability of the whole machine.

[0054] Example 2: In this example, the limiting structure includes a groove formed by the downward indentation of the bottom wall of the rotor body 31, and the rotor body 31 is embedded in the groove.

[0055] By setting the limiting structure to include a groove formed by the downward indentation of the bottom wall of the rotor body 31, and the rotor body 31 being embedded in the groove, the permanent magnet 32 ​​is not only limited by the groove on the outside, but also on the inside, making the coaxiality of the permanent magnet 32 ​​and the rotor body 31 higher, and further improving the stability of the permanent magnet 32 ​​when rotating with the rotor body 31.

[0056] As a preferred embodiment of this application, such as Figure 3 , Figure 9 As shown, the cutter shaft 6 is provided with a transmission part 61 that is connected to the rotor body 31, and the permanent magnet 32 ​​is provided with a clearance hole 314 to avoid the transmission part 61.

[0057] By providing a clearance hole 314 in the permanent magnet 32 ​​to avoid the transmission part 61, the clearance hole 314 can effectively avoid the transmission part 61, prevent mechanical wear caused by friction, and ensure the smooth operation of the transmission system, further optimizing the working efficiency and stability of the whole machine.

[0058] Furthermore, such as Figure 3 , Figure 9 As shown, the transmission unit 61 includes a transmission plate fixed in the clearance hole 314 and a flat shaft extending upward from the transmission plate and connected to the crushing device 5. The rotor body 31 is provided with a flat hole 313 through which the flat shaft passes.

[0059] By configuring the transmission unit 61 to include a transmission plate fixed in the clearance hole 314 and a flat shaft extending upward from the transmission plate and connected to the crushing device 5, and the rotor body 31 is provided with a flat hole 313 for the flat shaft to pass through, the cutter shaft 6 can be axially limited with the rotor body 31 through the transmission plate. At the same time, the torque transmission from the rotor body 31 to the cutter shaft 6 is achieved through the cooperation of the flat shaft and the flat hole 313, ensuring that the cutter shaft 6 is stable and reliable when rotating at high speed.

[0060] As a preferred embodiment of this implementation, such as Figure 3 As shown, the bottom wall of the rotor body 31 is also provided with an annular rib 312 that abuts against the transmission part 61.

[0061] By providing an annular rib 312 on the bottom wall of the rotor body 31 that abuts against the transmission part 61, the permanent magnet 32 ​​and the transmission part 61 can be isolated by the annular rib 312, avoiding direct contact between the transmission part 61 and the permanent magnet 32 ​​and the resulting friction noise. At the same time, the annular rib 312 can also be used to radially limit the transmission part 61, further improving the stability of the connection between the transmission part 61 and the rotor body 31.

[0062] In a preferred embodiment of this application, the permanent magnet 32 ​​is bonded and fixed to the rotor body 31.

[0063] By bonding and fixing the permanent magnet 32 ​​to the rotor body 31, the assembly efficiency and stability of the permanent magnet 32 ​​are further improved.

[0064] In a preferred embodiment of this application, the permanent magnet 32 ​​is welded and fixed to the limiting structure.

[0065] By welding and fixing the permanent magnet 32 ​​to the limiting structure, not only is the overall structural strength of the permanent magnet 32 ​​and the rotor body 31 enhanced, but the vibration resistance of the permanent magnet 32 ​​during high-speed operation is also further improved. This effectively reduces noise and magnetic performance attenuation caused by vibration, ensuring the stability and reliability of the food processing machine under long-term high-intensity working conditions.

[0066] It should be noted that this application does not specifically limit the structure of the food processing machine, such as... Figure 1 As shown, the food processor may include a main unit 2, a cup body 1 detachably mounted on the main unit 2, a stator 4 disposed within the main unit 2, and a rotor 3 disposed within the cup holder 12 of the cup body 1. The rotor 3 is connected to the pulverizing device via a cutter shaft. Figure 10 As shown, the food processor may also include a main unit 2, a cup body 1, and a brushless motor housed within the main unit 2, with the rotor 3 connected to the crushing device via a cutter shaft; for example... Figure 11 As shown, the cup body 1 may also include a cup body 11 and a cup holder 12 connected to the bottom of the cup body 11. The brushless motor is located in the cup holder 12, and the rotor 3 is connected to the crushing device through a cutter shaft.

[0067] 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 food processor for ease of production, comprising a cup body with a pulverizing device arranged therein and a brushless motor for driving the pulverizing device to rotate, characterized in that, The brushless motor includes a stator and a rotor disposed above the stator. The rotor includes a plate-shaped rotor body and a permanent magnet fixed on the rotor body. The rotor body is connected to the crushing device via a cutter shaft. The permanent magnet is an integral magnetic ring in the shape of a ring. The rotor body is provided with a limiting structure surrounding the permanent magnet.

2. The food processing machine for easy production according to claim 1, characterized in that, The limiting structure is a limiting rib surrounding the outside of the permanent magnet.

3. The food processing machine for easy production according to claim 2, characterized in that, The limiting rib is arranged in a closed ring.

4. A food processor for ease of production according to claim 2, characterized in that, The limiting rib is divided into multiple segments along the circumference of the rotor body.

5. A food processor for ease of production according to claim 2, characterized in that, The height of the limiting rib shall not exceed half the height of the permanent magnet.

6. The food processor of claim 1, wherein, The limiting structure includes a groove formed by the downward indentation of the bottom wall of the rotor body, and the rotor body is embedded in the groove.

7. The food processor of claim 1, wherein, The cutter shaft is provided with a transmission part that is connected to the rotor body for transmission, and the permanent magnet is provided with a clearance hole to avoid the transmission part.

8. A food processor for ease of production according to claim 7, characterised in that, The transmission unit includes a transmission plate fixed in the clearance hole and a flat shaft extending upward from the transmission plate and connected to the crushing device. The rotor body is provided with a flat hole through which the flat shaft passes.

9. A food processor for ease of production according to claim 7, characterized in that, The bottom wall of the rotor body is also provided with annular ribs that abut against the transmission part.

10. The food processor of claim 1, wherein, The permanent magnet is bonded and fixed to the rotor body; or... The permanent magnet is welded and fixed to the limiting structure.

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