Shaft type magnetic flux motor structure for stirring household appliances

Abstract

The utility model discloses a shaft type magnetic flux motor structure used for stirring household appliances, which comprises a stator and a rotor, the stator is fixed on a first carrier, and the stator is provided with a plurality of coil windings which are distributed on a plane at equal intervals according to the circumference; the rotor comprises a rotor main body mounted on the second carrier through a main bearing, a rotating shaft fixed at the upper end of the rotor main body, and a plurality of magnets which are fixed on the lower end surface of the rotor main body, are uniformly distributed according to the circumference and are in one-to-one correspondence with the coil windings, and N poles and S poles of the magnets are distributed in the axial direction; the polarities of two adjacent magnets on the same plane are opposite; the second carrier is detachably installed on the first carrier, the magnet is arranged above the coil winding, and a gap is formed between the magnet and the coil winding. The rotor mounting structure is more stable, and the rotation is smooth and stable, so that the phenomenon that the rotor shakes relative to the stator to form vibration so as to resonate noise is avoided or reduced; the distance between the main bearing and the center of the rotor is shortened, the assembly structure is stable, and vibration harmonic noise can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of household appliances, in particular to a shaft type magnetic flux motor structure for stirring household appliances. BACKGROUND

[0002] Rotary household appliances, such as blenders, soybean milk machines, meat choppers, and wall-breaking machines, are all electric appliances that are accepted and used by a large number of consumers.

[0003] Rotary household appliances are basically driven by motors, but the motor often produces various noises during operation, which not only affects the comfort of the user, but also may have adverse effects on health.

[0004] Currently, the rotor and stator of the motor used in rotary household appliances are radially assembled inside and outside, and cannot be installed on different carriers by being disassembled, so as to not meet certain special installation requirements; among them, only the upper end of the rotating shaft of the rotor is installed on the motor through a bearing, so that the rotor is positioned in a non-contact manner relative to the stator, a rotatable gap is formed between the rotor and the stator, the installation is not stable enough, and the rotor may shake relative to the stator due to various problems, thereby forming vibration and resonance noise; in addition, since only the upper end of the rotating shaft of the rotor is installed on the motor through a bearing, the distance between the bearing and the middle part of the rotor is lengthened, and vibration harmonic noise caused by the fixed position of the bearing is generated.

[0005] In view of this, the present inventors propose the following technical solution. UTILITY MODEL CONTENTS

[0006] The utility model aims at overcoming the deficiencies of the prior art and providing a shaft type magnetic flux motor structure for stirring household appliances.

[0007] In order to solve the above technical problems, the utility model adopts the following technical scheme: a shaft type magnetic flux motor structure for stirring household appliances includes a stator and a rotor that are mutually adapted, the stator is fixed on a first carrier, the stator has a plurality of coil windings that are equally spaced and distributed in a circle on a plane; the rotor includes a rotor body that is rotatably installed on a second carrier through a main bearing, a rotating shaft that is fixed on the upper end of the rotor body, and a plurality of magnets that are fixed on the lower end face of the rotor body, are equally distributed in a circle, and correspond to the coil windings one by one, the N and S poles of the magnets are distributed in the axial direction, and the polarities of the adjacent two magnets in the same plane are opposite; the second carrier is detachably installed on the first carrier, the magnets are placed above the coil windings, and a gap is formed.

[0008] Further, in the technical scheme, the stator comprises a base mounted on the first carrier, an annular core and a plurality of coil windings wound on the annular core, wherein the annular core is formed with a plurality of core columns equally spaced in a circumferential direction on a plane, and the coil windings are wound on the core columns.

[0009] Further, in the technical scheme, the base is externally provided with a lug provided with a through hole through which the first screw is screwed to the first carrier, and the base is provided with an annular mounting groove in which the annular core is embedded and fixed, and the coil windings are disposed in the annular mounting groove, and the core columns and the coil windings protrude out of the upper end of the base.

[0010] Further, in the technical scheme, the rotor body is provided at the lower end with a plurality of recesses equally spaced in a circumferential direction, and the magnets are embedded and fixed in the recesses, and the lower surfaces of the magnets are exposed outside the lower end surface of the rotor body.

[0011] Further, in the technical scheme, the cross sections of the magnets and the coil windings are fan ring-shaped, the first carrier and the second carrier are respectively provided with first and second mounting cavities, and the stator and the rotor are respectively mounted in the first and second mounting cavities to isolate the stator and the rotor from each other.

[0012] Further, in the technical scheme, the rotor body is provided at the lower end with a stepped groove, the outer circle of the main bearing is embedded and fixed in the stepped groove and limited by a snap spring, the second carrier is internally provided with a protruding shaft, and the inner circle of the main bearing is snap-fitted on the protruding shaft to enable the rotor body to stably rotate relative to the second carrier.

[0013] Further, in the technical scheme, the rotor body is provided at the upper end with a non-circular shaft hole, the lower end of the rotating shaft is provided with a connecting part with a smaller size and matching the non-circular shaft hole, and the connecting part is further provided at the bottom with a screw hole, the connecting part is embedded in the non-circular shaft hole and disposed in the rotor body, a second screw is screwed in the screw hole of the connecting part, and the head of the second screw abuts against the outside of the lower end opening of the non-circular shaft hole to limit the lower end of the rotating shaft to the upper end of the rotor body.

[0014] Further in the above technical solution, the rotating shaft is installed in the shell through a sealing assembly, the sealing assembly includes a connecting seat, a rubber sleeve arranged outside the connecting seat, a connecting cover fixed outside the rubber sleeve, first and second bearings fixed in the connecting seat and spaced apart, and a rubber plug arranged at the upper opening of the connecting seat; the connecting seat is embedded and fixed in the mounting position at the lower end of the shell through the rubber sleeve and the connecting cover to form a sealed assembly; the middle part of the rotating shaft is fixed through the first and second bearings; the lower end of the rotating shaft extends out of the sealing assembly to be connected with the upper end of the rotor body; the upper end of the rotating shaft extends into the shell through the rubber plug and is provided with a blade; and the rubber plug is wrapped around the outer surface of the rotating shaft to form a rotatable sealed assembly.

[0015] Further in the above technical solution, the rubber plug is provided with a plurality of sealing ribs arranged in an upper and lower spaced apart manner on the outside, the sealing ribs are in extrusion contact with the inner wall of the connecting seat; the rubber plug is provided with a first sealing flange extending downward and a second sealing flange integrally formed on the upper end of the first sealing flange and extending upward; the upper opening of the rubber plug is further formed with a bending portion and a third sealing flange integrally formed on the end of the bending portion and extending upward; and the first, second and third sealing flanges are in abutment with the outer surface of the rotating shaft to form a sealed contact.

[0016] Further in the above technical solution, the first carrier is further provided with a control circuit board; the stator further includes SU, SV and SW wiring terminals connected with one or more coil windings; the SU, SV and SW wiring terminals are connected with the control circuit board; the control circuit board includes an AC input, a transformer unit connected with the AC input, an AC-DC step-down circuit connected with the output of the transformer unit, a DC power supply unit connected with the AC-DC step-down circuit, an MCU controller connected with the DC power supply unit, and a three-phase full-bridge drive module connected with the output of the transformer unit and the MCU controller; after 220V AC is input into the AC input, the transformer unit converts the 220V AC into low-voltage AC; one end of the low-voltage AC is output to the three-phase full-bridge drive module; the three-phase full-bridge drive module outputs corresponding voltages of SU, SV and SW to the SU, SV and SW wiring terminals; the other end is stabilized to 5V DC through the AC-DC step-down circuit and the DC power supply unit; the 5V DC is supplied to the MCU controller; the MCU controller controls the three-phase full-bridge drive module through communication to make the three-phase full-bridge chip in the three-phase full-bridge drive module output different SVPWM voltages to control the speed, torque, power and current of the motor.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the utility model discloses the stator is fixed on the first carrier, and the rotor main body of rotor is rotatablely installed on the second carrier through the main bearing, the rotating shaft is installed on the rotor main body, and the second carrier is detachably installed on the first carrier, so that the rotor and the stator form an open assembly structure, so that different use requirements can be met. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the assembly structure of the utility model;

[0019] Figure 2 is the sectional view of the assembly structure of the utility model;

[0020] Figure 3 is the perspective view of the utility model;

[0021] Figure 4 is the perspective view of another angle of the utility model;

[0022] Figure 5 is the perspective view of the stator in the utility model;

[0023] Figure 6 is the perspective exploded view of the stator in the utility model;

[0024] Figure 7 is the perspective view of the rotor in the utility model;

[0025] Figure 8 is the sectional view of the rubber plug in the utility model;

[0026] Figure 9 is the perspective exploded view of the rotor in the utility model;

[0027] Figure 10 is the assembly drawing of the rotating shaft, the sealing assembly and the blade in the utility model;

[0028] Figure 11 is the exploded view of the rotating shaft, the sealing assembly and the blade in the utility model;

[0029] Figure 12is the first part circuit diagram of the control circuit board in the utility model;

[0030] Figure 13 is the second part circuit diagram of the control circuit board in the utility model. DETAILED DESCRIPTION

[0031] The utility model is further explained in connection with specific embodiment and drawing.

[0032] See Figures 1-13 As shown in the figure, it is a kind of shaft type magnetic flux motor structure for stirring household appliances, wherein, rotating household appliances can be blender, soybean milk machine, meat grinder, broken wall machine, cooking machine and the like.

[0033] The utility model is used for the shaft type magnetic flux motor structure of stirring household appliances, and it includes the shaft type magnetic flux motor, and the shaft type magnetic flux motor includes mutually adapted stator 1 and rotor 2.

[0034] The utility model discloses a kind of open type assembly structure of motor, including first carrier 3, second carrier 4 and rotor 2, wherein the stator 1 is fixed on the first carrier 3, the stator 1 has a plurality of coil winding 11 that is equally spaced in a plane according to circumferential portion;The rotor 2 includes rotor main body 22 rotatably mounted on the second carrier 4 by main bearing 21 and a plurality of magnets 24 fixed to the lower end surface of rotor main body 22 and equally spaced in a plane according to circumferential portion and corresponding to coil winding 11, the N pole and S pole of the magnet 24 are distributed in axial direction, and the polarity of adjacent two magnets 24 is opposite in the same plane;The second carrier 4 is detachably mounted on the first carrier 3, the magnet 24 is placed above coil winding 11, and gap is formed.The utility model works as follows: the magnetic flux direction formed by the magnet 24 at the lower end of rotor 2 is axial, i.e. its magnetic flux passes through the central axis of rotor;After a plurality of coil windings 11 are electrified, the magnetic field generated passes through rotor along axial direction, according to Lorentz force law, this magnetic field will generate torque in rotor, thereby driving rotor to rotate.The utility model fixes the stator 1 on the first carrier 3, and rotatably installs the rotor main body 22 of rotor 2 on the second carrier 4 by main bearing 21, installs the rotating shaft 23 on the rotor main body 22, and detachably installs the second carrier 4 on the first carrier 3, so that rotor 2 and stator 1 form open type assembly structure, so as to meet different use requirements;Since the rotor main body 22 of rotor 2 is rotatably mounted on the second carrier 4 by main bearing 21, instead of being mounted and positioned by rotating shaft cooperating bearing, its mounting structure is more stable, so that the rotation of rotor main body 22 and rotating shaft 23 on its upper end is more smooth and stable, thereby avoiding or reducing the phenomenon that resonance noise is formed by vibration of rotor relative to stator;In addition, since the rotor main body 22 of rotor 2 is rotatably mounted on the second carrier 4 by main bearing 21, it shortens the distance between main bearing and the center of rotor 2, and the assembly structure is stable, so it can reduce vibration harmonic noise.

[0035] Specifically, the specific structure of the stator 1 is that the stator 1 includes base 12 mounted on the first carrier 3, annular core 13 mounted on the base 12 and a plurality of coil windings 11 wound on the annular core 13, and the structure is simple, wherein a plurality of core columns 131 equally spaced in a plane according to circumferential portion are formed on the annular core 13, and the coil winding 11 is wound on the core column 131 to form a plurality of coil windings 11 equally spaced in a plane according to circumferential portion, and the coil winding 11 corresponds to the magnet 24.

[0036] The base 12 is externally provided with a lug 121, which is provided with a through hole 122. A first screw passes through the through hole 122 and is screwed with the first carrier 3, thereby ensuring that the stator 1 is fixedly installed on the first carrier 3. An annular mounting groove 123 is arranged on the base 12. The annular core 13 is inlaid and fixed in the annular mounting groove 123. The lower part of the coil winding 11 is arranged in the annular mounting groove 123. The upper parts of the core column 131 and the coil winding 11 protrude outward from the upper end of the base 12, thereby ensuring that the assembly structure is more stable. In addition, the bottom of the annular core 13 is also pasted and fixed with the annular mounting groove 123 by glue, thereby further enhancing the stability of the assembly structure.

[0037] The assembly structure of the rotor body 22 and the magnet 24 is that a plurality of grooves 221 are arranged on the lower end face of the rotor body 22 and are distributed at equal intervals in a circle. The magnet 24 is inlaid and fixed in the grooves 221, and the lower surface of the magnet 24 is exposed outward from the lower end face of the rotor body 22. In addition, the magnet 24 can also be pasted and fixed with the grooves 221 by glue, thereby further enhancing the stability of the assembly structure. However, the glue should not affect the magnetism and magnetic field. A good adhesive can be selected.

[0038] The cross sections of the magnet 24 and the coil winding 11 are fan ring shapes. As many magnets 24 and coil windings 11 as possible can be designed in a circular ring surface, thereby ensuring that the magnetic flux and the magnetic field are stronger, and the rotation is more stable and smoother relative to the stator.

[0039] A stepped groove 222 is arranged on the lower end of the rotor body 22. The outer circle of the main bearing 21 is inlaid and fixed in the stepped groove 222 by interference fit and is clamped by a snap spring, thereby stably installing the main bearing 21 in the rotor body 22. A convex shaft 41 is arranged in the second carrier 4. The inner circle of the main bearing 21 is clamped on the convex shaft 41, so that the rotor body 22 can stably rotate relative to the second carrier 4.

[0040] The assembly structure of the rotor body 22 and the rotating shaft 23 is that a non-circular shaft hole 223 is arranged on the upper end of the rotor body 22. A connecting part 231 with a smaller size and matching the non-circular shaft hole 223 is arranged on the lower end of the rotating shaft 23. A screw hole 232 is further arranged on the bottom of the connecting part 231. The connecting part 231 is inlaid in the non-circular shaft hole 223 and arranged in the rotor body 22. A second screw is screwed in the screw hole 232 of the connecting part 231. The head of the second screw abuts outward from the lower end opening of the non-circular shaft hole 223, thereby limiting the lower end of the rotating shaft 23 to the upper end of the rotor body 22. The rotating shaft 23 is fixed to the upper end of the rotor body 22, so that the two are fixed together to form a whole, thereby realizing synchronous rotation.

[0041] The rotating shaft 23 is installed in the shell 6 through a sealing assembly 5, the sealing assembly 5 comprises a connecting base 51, a rubber sleeve 52 sleeved outside the connecting base 51, a connecting cover 56 fixed outside the rubber sleeve 52, a first bearing 53 and a second bearing 54 fixed in the connecting base 51 and spacedly distributed, a rubber plug 55 arranged at the upper opening of the connecting base 51, the connecting base 51 is inlaid and fixed in the mounting position 61 at the lower end of the shell 6 through the cooperation of the rubber sleeve 52 and the connecting cover 56 to form a sealed assembly, which not only realizes sealed assembly, but also prevents foreign matters from entering, the middle part of the rotating shaft 23 is fixed through the first bearing 53 and the second bearing 54, so that the assembly of the rotating shaft 23 is more stable, and more smooth and stable rotation can be realized, so that the assembly of the whole rotor is also more stable, and the rotation is more smooth and stable. The lower end of the rotating shaft 23 extends out of the sealing assembly 5 to be connected with the upper end of the rotor main body 22, the upper end of the rotating shaft 23 extends into the shell 6 after passing through the rubber plug 55, and the blade 7 is installed, and the rubber plug 55 also wraps the outer surface of the rotating shaft 23 to form a rotatable sealed assembly, which can make the assembly sealing performance of the rotating shaft 23 better.

[0042] The first bearing 53 and the second bearing 54 are also separated by a gasket 50 to ensure that the first bearing 53 and the second bearing 54 are not associated with rotation, so that the rotating shaft 23 rotates more smoothly.

[0043] The rubber plug 55 is provided with a plurality of sealing ribs 551 spacedly distributed upward and downward outside, the sealing ribs 551 are in extrusion contact with the inner wall of the connecting base 51, and the assembly structure is further ensured stable and sealed; the rubber plug 55 is provided with a first sealing flange 552 extending downward inside and a second sealing flange 553 integrally formed on the upper end of the first sealing flange 552 and extending upward, the rubber plug 55 is further formed with a bending part 554 at the upper opening and a third sealing flange 555 integrally formed on the end of the bending part 554 and extending upward, the third sealing flange 555 is better in elastic deformation capacity through the holding of the bending part 554, and the first sealing flange 552, the second sealing flange 553 and the third sealing flange 555 all abut against the outer surface of the rotating shaft 23 to form a plurality of sealing contacts, and can realize rotary sealing at the same time.

[0044] The first carrier 3 and the second carrier 4 are respectively provided with a first mounting cavity 30 and a second mounting cavity 40; the stator 1 and the rotor 2 are respectively installed in the first mounting cavity 30 and the second mounting cavity 40, so that the stator 1 and the rotor 2 are isolated from each other, which is particularly suitable for open type rotating household appliances.

[0045] The first carrier 3 is also provided with a control circuit board 8, the stator 1 further comprises SU, SV and SW terminals connected with one or more coil windings 11, the SU, SV and SW terminals are connected with the control circuit board 8, the control circuit board 8 comprises an AC input terminal 81, a transformer unit 82 connected with the AC input terminal 81, an AC-DC voltage reduction circuit 83 connected with an output of the transformer unit 82, a DC power supply unit 84 connected with the AC-DC voltage reduction circuit 83, an MCU controller 85 connected with the DC power supply unit 84, and a three-phase full-bridge driving module 86 connected with the output of the transformer unit 82 and the MCU controller 85; after 220V AC power is input into the AC input terminal 81, the 220V AC power is converted into low-voltage AC power by the transformer unit 82, one end of the low-voltage AC power is output to the three-phase full-bridge driving module 86, the three-phase full-bridge driving module 86 outputs corresponding SU, SV and SW voltages to the SU, SV and SW terminals, and the other end is stabilized to 5V DC power through the AC-DC voltage reduction circuit 83 and the DC power supply unit 84, the 5V DC power is supplied to the MCU controller 85, and the MCU controller 85 controls the three-phase full-bridge driving module 86 through communication to make a three-phase full-bridge chip 861 in the three-phase full-bridge driving module 86 output different SVPWM voltages for controlling the speed, torque, power and current of the motor.

[0046] The model of the three-phase full-bridge chip 861 is SDM10C60TA2B1, which outputs three-phase AC power to the SU, SV and SW terminals of the stator, and the rotation of the rotor is smoother than that of the rotor driven by DC power, the DC power is not stalled, the work and vibration can be effectively reduced, and the noise output is reduced.

[0047] Compared with the radial flux motor, the axial flux motor has the following advantages.

[0048] 1. Smaller size: compared with the traditional radial flux motor, the motor has more flexible combination, is more widely applied, the rotor and the stator can be separated, the size is smaller, and the motor can be used for more space-limited products and is more flexible to use.

[0049] 2. High torque density and high torque: the effective magnetic surface area of the axial flux motor is located on the lower surface of the rotor instead of the outer diameter, so that greater torque can be provided in a certain volume, and the torque density and power density are improved.

[0050] 3. High efficiency: due to the shorter one-dimensional magnetic flux path, the efficiency of the axial flux motor is very high, usually more than 96%, comparable or superior to the best two-dimensional radial flux motor on the market. The axial flux motor saves 15%-25% energy compared to ordinary radial flux motors at all power levels, maintains longer peak power output, and improves the efficiency of household appliances and reduces heat dissipation.

[0051] 4. Low noise: due to uniform magnetic field distribution and multiple combinations of detachable axial flux motors, the noise and vibration generated during operation are low, especially suitable for applications with strict noise and vibration requirements.

[0052] In summary, the utility model discloses a stator 1 is fixed on the first carrier 3, and the rotor main body 22 of rotor 2 is rotatably installed on the second carrier 4 through the main bearing 21, the rotating shaft 23 is installed on the rotor main body 22, and the second carrier 4 is detachably installed on the first carrier 3, so that the rotor 2 and the stator 1 form an open assembly structure, so that different use requirements can be met. Since the rotor main body 22 of the rotor 2 is rotatably installed on the second carrier 4 through the main bearing 21 instead of being installed and positioned by the rotating shaft cooperating with the bearing, the installation structure is more stable, the rotation of the rotor main body 22 and the rotating shaft 23 at its upper end is smoother and more stable, and the phenomenon of resonance noise caused by the vibration of the rotor relative to the stator is avoided or reduced. In addition, since the rotor main body 22 of the rotor 2 is rotatably installed on the second carrier 4 through the main bearing 21, the distance between the main bearing and the center of the rotor 2 is shortened, and the assembly structure is stable, which can reduce the vibration harmonic noise.

[0053] Of course, the above only for the specific embodiments of the utility model, and not to limit the utility model implementation range, all equivalent changes or modifications made according to the structure, features and principles of the utility model patent range described, should be included in the utility model patent range.

Claims

1. A shaft-type flux motor structure for use in stirring appliances, comprising a stator (1) and a rotor (2) that are adapted to each other, characterized in that: The stator (1) is fixed on the first carrier (3), and the stator (1) has a plurality of coil windings (11) evenly spaced on a plane in a circular pattern; The rotor (2) includes a rotor body (22) rotatably mounted on the second carrier (4) via a main bearing (21), a rotating shaft (23) fixed to the upper end of the rotor body (22), and a plurality of magnets (24) fixed to the lower end face of the rotor body (22) and evenly distributed in a circumference and corresponding one-to-one with the coil winding (11). The N pole and S pole of the magnet (24) are distributed in the axial direction, and the polarities of two adjacent magnets (24) are opposite in the same plane. The second carrier (4) is detachably mounted on the first carrier (3), and the magnet (24) is positioned above the coil winding (11) and forms a gap.

2. The shaft-type flux motor structure for stirring appliances according to claim 1, characterized in that: The stator (1) includes a base (12) mounted on a first carrier (3), an annular iron core (13) mounted on the base (12), and a plurality of coil windings (11) wound on the annular iron core (13). The annular iron core (13) has a plurality of core posts (131) evenly spaced on a plane in a circular pattern, and the coil windings (11) are wound on the core posts (131).

3. The shaft-type flux motor structure for stirring appliances according to claim 2, characterized in that: The base (12) is provided with several lugs (121) on the outside. Each lug (121) has a through hole (122). The first screw passes through the through hole (122) and is screwed to the first carrier (3). The base (12) is provided with an annular mounting groove (123). The annular iron core (13) is embedded and fixed in the annular mounting groove (123). The lower part of the coil winding (11) is placed in the annular mounting groove (123). The core column (131) and the upper part of the coil winding (11) both protrude from the upper end of the base (12).

4. The shaft-type flux motor structure for stirring appliances according to claim 1, characterized in that: The rotor body (22) has a plurality of grooves (221) evenly spaced on the lower end face. The magnet (24) is embedded and fixed in the groove (221), and the lower surface of the magnet (24) is exposed outside the lower end face of the rotor body (22).

5. The shaft-type flux motor structure for stirring appliances according to claim 1, characterized in that: The cross-section of the magnet (24) and the coil winding (11) is fan-shaped; the first carrier (3) and the second carrier (4) are respectively provided with a first mounting cavity (30) and a second mounting cavity (40); the stator (1) and the rotor (2) are respectively installed in the first mounting cavity (30) and the second mounting cavity (40), so that the stator (1) and the rotor (2) are isolated from each other.

6. The shaft-type flux motor structure for stirring appliances according to any one of claims 1-5, characterized in that: The rotor body (22) has a stepped groove (222) at its lower end. The outer circle of the main bearing (21) is fixedly embedded in the stepped groove (222) and held in place by a snap ring. A convex shaft (41) is provided inside the second carrier (4). The inner circle of the main bearing (21) is fixed to the convex shaft (41), so that the rotor body (22) can rotate stably relative to the second carrier (4).

7. The shaft-type flux motor structure for stirring appliances according to any one of claims 1-5, characterized in that: The upper end of the rotor body (22) is provided with a non-circular shaft hole (223); the lower end of the rotating shaft (23) is provided with a connecting part (231) with a smaller size that matches the non-circular shaft hole (223), and the bottom of the connecting part (231) is also provided with a screw hole (232). The connecting part (231) is embedded in the non-circular shaft hole (223) and placed inside the rotor body (22). A second screw is screwed and fixed in the screw hole (232) of the connecting part (231). The head of the second screw abuts against the outside of the lower opening of the non-circular shaft hole (223) to limit the lower end of the rotating shaft (23) to the upper end of the rotor body (22).

8. The shaft-type flux motor structure for stirring appliances according to claim 7, characterized in that: The rotating shaft (23) is installed inside the housing (6) via a sealing assembly (5). The sealing assembly (5) includes a connecting seat (51), a rubber sleeve (52) fitted outside the connecting seat (51), a connecting cover (56) fixed outside the rubber sleeve (52), a first bearing (53) and a second bearing (54) fixed inside the connecting seat (51) and spaced apart, and a rubber plug (55) provided at the upper opening of the connecting seat (51). The connecting seat (51) is connected to the connecting cover via the rubber sleeve (52). (56) The shaft (23) is embedded and fixed in the mounting position (61) at the lower end of the housing (6) to form a sealed assembly. The middle part of the shaft (23) is fixed with the first bearing (53) and the second bearing (54). The lower end of the shaft (23) extends out of the sealing assembly (5) to connect with the upper end of the rotor body (22). The upper end of the shaft (23) passes through the rubber plug (55) and extends into the housing (6) to install the blade (7). The rubber plug (55) also covers the outer surface of the shaft (23) to form a rotatable sealed assembly.

9. The shaft-type flux motor structure for stirring appliances according to claim 8, characterized in that: The rubber plug (55) is provided with multiple sealing ribs (551) spaced vertically on the outside. The sealing ribs (551) are in contact with the inner wall of the connecting seat (51). The rubber plug (55) is provided with a first sealing flange (552) extending downward and a second sealing flange (553) integrally formed on the upper end of the first sealing flange (552) and extending upward. The upper opening of the rubber plug (55) is also formed with a bent part (554) and a third sealing flange (555) integrally formed on the end of the bent part (554) and extending upward. The first sealing flange (552), the second sealing flange (553) and the third sealing flange (555) all abut against the outer surface of the rotating shaft (23) and form a sealing contact.

10. The shaft-type flux motor structure for stirring appliances according to any one of claims 1-5, characterized in that: The first carrier (3) is also provided with a control circuit board (8). The stator (1) also includes an SU terminal, an SV terminal, and a SW terminal connected to one or more coil windings (11). The SU terminal, SV terminal, and SW terminal are connected to the control circuit board (8). The control circuit board (8) includes an AC input terminal (81), a transformer unit (82) connected to the AC input terminal (81), an AC-DC step-down circuit (83) connected to the output of the transformer unit (82), a DC power supply unit (84) connected to the AC-DC step-down circuit (83), an MCU controller (85) connected to the DC power supply unit (84), and a three-phase full-bridge drive module (86) connected to the output of the transformer unit (82) and the MCU controller (85).

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