Motor stator and clothes processing device

Abstract

The utility model discloses a motor stator and a clothes processing device, relates to the technical field of household appliances, solves the problem of overlarge vibration transmission of the motor stator, and adopts the technical scheme that the motor stator mainly comprises an annular stator body and a stator mounting part fixed with the annular stator body, the coil assembly comprises a stator iron core and a coil framework which is formed outside the stator iron core through injection molding, the stator mounting part comprises a plurality of mounting teeth which are circumferentially distributed on the inner ring side of the annular stator body, and the plurality of mounting teeth are separated from each other to form an independently deformed cantilever structure. The motor is mainly used for reducing noise generated during operation of the motor, and good use experience is provided for users.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a motor stator and a clothes processing device. Background Art

[0002] The problem of excessive vibration transmission of the washing machine motor stator often leads to a series of adverse effects. This problem mainly stems from multiple aspects such as motor design, manufacturing and operating environment. As the core part of the motor, the motor stator is responsible for generating a rotating magnetic field to drive the motor to rotate. However, when the stator design is unreasonable or the manufacturing process is defective, it may cause excessive vibration of the stator during operation.

[0003] These vibrations not only affect the stability and efficiency of the motor, but also are transmitted to the motor housing and support structure through the mechanical structure, and finally to the drum, causing the drum to deviate left and right during rotation, thereby generating noise. The noise not only affects people's working and living environment, but may also mask other fault signals in the operation of the motor, increasing the difficulty of equipment maintenance. Utility Model Content

[0004] The purpose to be achieved by the utility model is to provide a motor stator and a clothes processing device, so as to solve the problem of excessive vibration transmission of the motor stator and reduce the noise generated when the motor is running.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a motor stator, including an annular stator body and a stator mounting part fixed to the annular stator body, the annular stator body including a coil assembly, the coil assembly including a stator core and a coil frame injection molded outside the stator core, the stator mounting part including a plurality of mounting teeth circumferentially distributed on the inner ring side of the annular stator body, the plurality of mounting teeth being separated from each other to form an independently deformable cantilever structure.

[0006] After adopting the above technical scheme, the utility model has the following advantages: the annular stator body is installed in the motor through a plurality of mounting teeth circumferentially distributed on the inner ring side of the annular stator body on the stator mounting part; since the mounting teeth protrude from the inner ring side of the stator body and have a certain elasticity, the mounting teeth can reduce the influence of the vibration generated by the stator on the clothing processing device through their own elastic properties; at the same time, since the plurality of mounting teeth are separated from each other to form an independently deformed cantilever structure, each mounting tooth acts independently when utilizing elastic properties for shock absorption, thereby changing the transmission path of the vibration, and no vibration is transmitted between adjacent mounting teeth, thereby enhancing the elasticity of a single mounting tooth.

[0007] Furthermore, the installation teeth are distributed circumferentially on the hole wall of the assembly hole; the installation teeth are designed to be a sheet-like structure whose axial dimensions are smaller than their radial dimensions and circumferential dimensions, so that the installation teeth are elastic in the axial direction.

[0008] Furthermore, the annular stator body further comprises a plastic package, the plastic package is injection molded outside the coil assembly, the plastic package is a thermosetting plastic part, and the stator mounting portion is a thermoplastic plastic part.

[0009] By adopting the above-mentioned technical scheme, the plastic shell is injection molded outside the coil assembly, which can prevent the coil assembly from being exposed outside and avoid abnormal insulation failure of the coil assembly during use, which may cause a fire. The plastic shell is made of thermosetting resin and the mounting teeth are made of thermoplastic resin. The thermosetting resin has strong rigidity and is resistant to high temperatures. After being heated and molded in one step, it will not be deformed or cause internal structure damage due to the temperature of the thermoplastic resin during heating and molding. Due to the difference in rigidity, the thermosetting resin has strong rigidity. As the plastic shell is coated on the outside of the coil assembly, the stator mounting part formed by the thermoplastic resin has a stiffness difference, which makes the stator mounting part more prone to elastic deformation and has better elastic performance.

[0010] Furthermore, the mounting teeth are designed to be a sheet-like structure whose axial dimensions are smaller than their radial dimensions and circumferential dimensions, so that the mounting teeth are elastic in the axial direction.

[0011] By adopting the above-mentioned technical solution, the mounting teeth are designed as a sheet structure whose axial dimensions are smaller than their radial dimensions and circumferential dimensions, so that the elastic range of the mounting teeth in the axial direction is larger than the elastic range in the radial and circumferential directions, so as to obtain greater elasticity in the axial direction and reduce the vibration force on the stator in the axial direction.

[0012] Furthermore, a reinforcing step is provided at the position where the mounting teeth are connected to the inner ring side of the annular stator body.

[0013] By adopting the above technical solution, a reinforcing step is provided between the mounting teeth and the inner ring side of the annular stator body, so that the thickness at the connection position is increased, the connection strength at the connection position is further enhanced, and the connection position is not easily damaged.

[0014] Furthermore, the mounting tooth is provided with a stator fastening hole, and the mounting tooth is provided with an annular rib and an intermediate connecting wall, the annular rib is provided on the periphery of the stator fastening hole, and the intermediate connecting wall extends from the reinforcing step of the mounting tooth to the annular rib.

[0015] By adopting the above technical solution, the annular ribs arranged on the periphery of the stator fastening hole and the middle connecting wall connecting the reinforcing step and the annular ribs can be used as reinforcing ribs on the mounting teeth to ensure the strength and elasticity of the mounting teeth.

[0016] Furthermore, a gap is provided between two adjacent mounting teeth for disconnecting the two adjacent mounting teeth.

[0017] By adopting the above-mentioned technical solution, the connection between two adjacent mounting teeth is disconnected by a gap, so that the mounting teeth are independent of each other and have space for deformation, thereby enhancing the elasticity of a single mounting tooth, changing the vibration transmission path, and preventing vibration from being transmitted between adjacent mounting teeth.

[0018] Furthermore, the gap extends radially to the plastic packaging layer and forms a groove on the plastic packaging layer.

[0019] By adopting the above technical solution, the connection between two adjacent mounting teeth is further disconnected through the groove formed on the plastic sealing layer, so that the vibrations between the two adjacent mounting teeth will not affect each other.

[0020] Furthermore, the mounting tooth includes a base directly connected to the annular stator body and a protrusion protruding inward from the base, the width of the base is greater than the width of the protrusion, and the base and the width form a "T"-shaped structure.

[0021] By adopting the aforementioned technical solution, the mounting tooth with a T-shaped structure design has its wider part, that is, the base, fixed to the inner ring side of the annular stator body, which can provide better stability for the connection between the mounting tooth and the inner ring side of the annular stator body, while the narrower part, that is, the protrusion, is close to the axis of the annular stator body, so that a certain force arm is formed at the connection between the protrusion and the inner ring side of the annular stator body, so that the entire mounting tooth is more likely to elastically deform toward the side of the annular stator body, and a better vibration reduction effect can be obtained according to the vibration of the stator.

[0022] Furthermore, a stator fastening hole is provided on the mounting tooth, and the stator fastening hole is arranged on the protruding portion.

[0023] By adopting the above-mentioned technical solution, the stator is fixed in the motor through the stator fastening hole, so that the connecting part can achieve the purpose of vibration reduction by installing teeth.

[0024] Furthermore, the mounting teeth and the coil frame are an integrally formed structure; or, the mounting teeth are mounted on the coil frame via a connecting structure.

[0025] By adopting the above-mentioned technical solution, the one-piece molding design of the mounting teeth and the coil frame can eliminate the weaknesses of the connection between the coil frame and the mounting teeth, thereby improving the strength and stability of the overall structure; and the mounting teeth are installed on the coil frame through the connecting structure, which makes maintenance and replacement more convenient. If the stator components need to be repaired or replaced, it is only necessary to loosen the connecting structure without dismantling the entire equipment.

[0026] The utility model also discloses a clothing processing device, comprising:

[0027] A water container having a rear wall;

[0028] A drum, which is arranged in the water cylinder;

[0029] A connecting shaft, used for transmitting the driving force of the motor to the drum, the connecting shaft passing through the water holding cylinder and connected to the drum;

[0030] It also includes a motor, which includes a rotor and the motor stator described in any of the above technical solutions, and the stator mounting portion is used to fix the motor stator to the rear wall of the water storage barrel through fasteners.

[0031] By adopting the above-mentioned technical scheme, the outer side of the coil assembly is covered with a plastic shell to prevent the coil assembly from being exposed, thereby avoiding abnormal insulation failure of the coil assembly during use and causing a fire; and the stator mounting portion includes a plurality of mounting teeth circumferentially distributed on the inner ring side of the annular stator body, and the mounting teeth are thermoplastic plastic parts. Since the mounting teeth are made of thermoplastic material, the material has relatively small rigidity and protrudes from the inner ring side of the annular stator body and has a certain elasticity, so that the mounting teeth can reduce the influence of the vibration generated by the stator on the clothing processing device through their own elastic properties; at the same time, since the plurality of mounting teeth are separated from each other to form an independently deformed cantilever structure, each mounting tooth acts independently when utilizing elastic properties to reduce shock, thereby changing the transmission path of vibration, and no vibration is transmitted between adjacent mounting teeth, thereby enhancing the elasticity of a single mounting tooth. This design not only improves the safety of the motor, but also reduces the vibration transmitted to the barrel by the motor, thereby optimizing the noise of the whole machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The utility model is further described below in conjunction with the accompanying drawings:

[0033] Figure 1 This is a schematic diagram of the structure of a motor stator of the utility model (I);

[0034] Figure 2 This is a schematic diagram of the structure of a motor stator of the utility model (II);

[0035] Figure 3 It is a schematic diagram of the installation gear and the connection structure;

[0036] Figure 4 This is a schematic diagram of the integrated molding of the installation gear;

[0037] Figure 5 It is a schematic diagram of the bottom structure of the water bucket;

[0038] In the figure: mounting teeth 1, reinforcing steps 11, stator fastening holes 12, annular ribs 13, intermediate connecting walls 14, gaps 15, grooves 16, bases 17, protrusions 18, bolts 19, annular stator body 2, coil skeleton 21, plastic package 22, water tub 3, connecting shaft 4. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0040] The terms "first", "second", etc. (if any) in the specification and claims of the present utility model are used to distinguish similar objects, rather than to describe a specific order or sequence. Even if "second" is used to distinguish a certain technical feature, it does not necessarily mean that it has "first". It should be understood that in the present utility model, "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. It should be understood that in the present utility model, "multiple" refers to two or more. "And / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, X and / or Y can represent: X exists alone, X and Y exist at the same time, and Y exists alone. The character " / " generally indicates that the related objects before and after are in an "or" relationship. "Contains X, Y and Z", "Contains X, Y, Z" means that X, Y, and Z are all included, "Contains X, Y or Z" means that one of X, Y, and Z is included, and "Contains X, Y and / or Z" means that any one, any two, or three of X, Y, and Z are included.

[0041] The following specific embodiments are used to describe the technical solution of the utility model in detail. The following specific embodiments can be combined or replaced with each other according to actual conditions, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0042] Embodiment 1:

[0043] like Figures 1 to 4 As shown, the utility model provides a motor stator, including an annular stator body 2 and a stator mounting portion fixed to the annular stator body 2, the annular stator body 2 including a coil assembly, the coil assembly including a stator core and a coil frame 21 injection molded outside the stator core, the stator mounting portion including a plurality of mounting teeth 1 circumferentially distributed on the inner ring side of the annular stator body 2, the plurality of mounting teeth 1 being separated from each other to form an independently deformable cantilever structure.

[0044] The utility model installs the annular stator body 2 in the motor by means of a plurality of mounting teeth circumferentially distributed on the inner ring side of the annular stator body 2 on the stator mounting portion. Since the mounting teeth 1 protrude from the inner ring side of the annular stator body 2 and have a certain elasticity, the mounting teeth 1 can reduce the influence of the vibration generated by the stator on the clothing processing device through its own elastic performance; at the same time, since the plurality of mounting teeth 1 are separated from each other to form an independently deformed cantilever structure, each mounting tooth 1 acts independently when utilizing elastic performance for shock absorption, thereby changing the transmission path of the vibration, preventing vibration from being transmitted between adjacent mounting teeth 1, and enhancing the elasticity of a single mounting tooth 1.

[0045] Among them, in the above technical scheme, the motor stator is fixed on the bearing seat or water tub of the washing machine through the stator mounting part fixed on the annular stator body 2, and the entire stator is fixed on the bearing seat or water tub of the washing machine, and cooperates with the rotor passing through the middle of the stator. The rotor also includes coils and silicon steel sheets. Under the action of the coil, the current will generate a magnetic field on the silicon steel sheets of the stator and rotor, thereby driving the rotor to rotate, and then driving the drum of the washing machine to rotate, so as to achieve washing of clothes. In this process, the stator will produce greater vibration due to certain process defects. The multiple independent mounting teeth 1 designed on the above stator mounting part can achieve shock absorption of the stator through their elastic properties.

[0046] Specifically, in the present embodiment, the plastic shell 22 is injection molded outside the coil assembly, which can prevent the coil assembly from being exposed to the outside, and avoid abnormal insulation failure of the coil assembly during use, which may cause a fire. The plastic shell 22 is made of thermosetting resin, and the mounting teeth 1 are made of thermoplastic resin. The thermosetting resin has strong rigidity and is resistant to high temperatures. After being heated and molded in the first step, it will not be deformed or cause internal structure damage due to the temperature of the thermoplastic resin during heating and molding. Due to the difference in rigidity, the thermosetting resin has strong rigidity. As the plastic shell 22 is coated on the outside of the coil assembly, it has a stiffness difference with the stator mounting part formed by the thermoplastic resin, which makes the stator mounting part more prone to elastic deformation and has better elastic performance.

[0047] In one embodiment, the plastic package shell 22 and the mounting teeth 1 are made of thermoplastic plastic parts. Since the thermoplastic plastic parts have good wear resistance, the damage to the mounting teeth 1 and the plastic package shell 22 under friction and wear environment can be reduced.

[0048] In one embodiment, the plastic package 22 and the mounting teeth 1 are both thermosetting plastic parts. Thermosetting plastic has good insulation performance, which can prevent the coil assembly from having insulation failure during use.

[0049] In this embodiment, the inner ring side of the annular stator body 2 is composed of a coil frame 21, that is, the mounting tooth 1 is arranged on the inner side of the annular coil frame 21, so that the mounting tooth 1 has better stability; in other embodiments, the inner ring side of the annular stator body 2 can also be composed of a plastic shell 22, that is, the plastic shell 22 covers the entire coil frame 21, and the mounting tooth 1 is arranged on the plastic shell 22.

[0050] In this embodiment, the number of mounting teeth 1 is six, and the six mounting teeth 1 are circumferentially distributed on the inner ring side of the annular stator body 2 and arranged opposite to each other in pairs; the axial dimension of the mounting tooth 1 is a sheet-like structure smaller than its radial dimension and circumferential dimension, so that the mounting tooth 1 has elasticity in the axial direction; by designing the mounting tooth 1 as a sheet-like structure with an axial dimension smaller than its radial dimension and circumferential dimension, the elastic range of the mounting tooth 1 in the axial direction is larger than the elastic range in the radial and circumferential directions, so as to obtain greater elasticity in the axial direction and reduce the vibration force on the stator in the axial direction.

[0051] Of course, in other embodiments, the number of the mounting teeth 1 may also be three, four, seven, etc., as long as the number of the mounting teeth 1 is greater than or equal to two.

[0052] Among them, since the mounting tooth 1 is a sheet structure, after being connected to the inner ring side of the annular stator body, its strength is insufficient and it is easy to be damaged. In order to enhance its connection strength, a reinforcing step 11 is provided at the position where the mounting tooth 1 is connected to the inner ring side of the annular stator body; by providing the reinforcing step 11 at the position where the mounting tooth 1 is connected to the inner ring side of the annular stator body 2, the thickness at the connection position is increased, the connection strength at the connection position is further enhanced, and the connection position is not easily damaged.

[0053] Specifically, the mounting tooth 1 is provided with a stator fastening hole 12 for assembling the annular stator body 2. In addition, in order to ensure the strength and elasticity of the mounting tooth 1, the mounting tooth 1 is also provided with an annular rib 13 and an intermediate connecting wall 14. The annular rib 13 is arranged on the periphery of the stator fastening hole 12, and the intermediate connecting wall 14 extends from the reinforcing step 11 of the mounting tooth 1 to the annular rib 13; the annular rib 13 arranged on the periphery of the stator fastening hole 12 and the intermediate connecting wall 14 connecting the reinforcing step 11 and the annular rib 13 can be used as a reinforcing rib on the mounting tooth 1 to ensure the strength and elasticity of the mounting tooth 1.

[0054] In order to enhance the elasticity of a single mounting tooth 1, a gap 15 is provided between two adjacent mounting teeth 1 for disconnecting two adjacent mounting teeth 1; the connection between the two adjacent mounting teeth 1 is disconnected by the gap 15, so that the mounting teeth 1 are independent of each other and have space for deformation, thereby enhancing the elasticity of the single mounting tooth 1, changing the vibration transmission path, and no vibration is transmitted between two adjacent mounting teeth 1; when the stator vibrates during operation, since different mounting teeth 1 are not connected, vibration will not be transmitted to each other, and will not affect each other; and due to the existence of the gap 15, the activity space of a single mounting tooth 1 is larger, resulting in a better elastic effect, and under the elastic effect of multiple mounting teeth 1, a better vibration reduction effect can be achieved; wherein, the gap 15 extends along the radial direction of the stator to the plastic package shell 22, and a groove 16 is formed on the plastic package shell 22.

[0055] Specifically, the mounting tooth 1 includes a base 17 on both sides in the circumferential direction and a protrusion 18 in the middle of the base 17, the base 17 and the protrusion 18 form a "T"-shaped structure, and the protrusion 18 and the base 17 are both fixed to the inner ring side of the annular stator body; the mounting tooth 1 designed with a "T"-shaped structure, that is, the base 17 is fixed to the inner ring side of the annular stator body, can provide better stability for the connection between the mounting tooth 1 and the coil skeleton 21, and the narrower part, that is, the protrusion 18 is close to the axis of the inner side of the coil skeleton 21, so that a certain force arm is formed at the connection between this part of the protrusion and the inner ring side of the annular stator body 2, so that the entire mounting tooth 1 is closer to the side of the coil skeleton axis to be elastically deformed, and a better vibration reduction effect can be obtained according to the vibration of the stator. Specifically, under the conditions of the same material and thickness, the narrower structure has a smaller surface area than the wider structure. Under the same force, the narrower structure is more affected by the force. That is, the narrower part of the tail end of the "T"-shaped structure swings up and down more than other rectangular structures after being subjected to force, thus producing better elasticity and further improving the vibration reduction effect.

[0056] Among them, a stator fastening hole 12 is provided on the mounting tooth 1, and the stator fastening hole 12 is set in the protruding part; the stator is fixed in the motor through the stator fastening hole 12, so that the connecting part can achieve the purpose of shock absorption through the mounting tooth 1.

[0057] In one embodiment, if Figure 4 As shown, the mounting tooth 1 and the coil frame 21 are an integrally formed structure; the integrally formed design of the mounting tooth 1 and the coil frame 21 can eliminate the weakness of the connection between the coil frame 21 and the mounting tooth 1, thereby improving the strength and stability of the overall structure.

[0058] In another embodiment, if Figure 3As shown, the mounting tooth 1 is installed on the coil frame 21 through a connecting structure, and the connecting structure is a bolt 19. The mounting tooth 1 is installed on the coil frame 21 through the bolt 19, which can make maintenance and replacement more convenient. If the stator component needs to be repaired or replaced, it is only necessary to loosen the connecting structure without disassembling the entire device. The connecting structure can be a connecting structure formed by rivets or welding.

[0059] Embodiment 2:

[0060] This example discloses a clothes processing device, comprising:

[0061] A water container 3 having a rear wall;

[0062] A drum, which is arranged in the water cylinder 3;

[0063] A connecting shaft, which is used to transmit the driving force of the motor to the drum, the connecting shaft 4 passes through the water container and is connected to the drum;

[0064] It also includes the motor stator described in the first embodiment and other identical embodiments.

[0065] like Figure 5 As shown, in this embodiment, a bearing seat is provided on the rear wall of the water tub 3, and the bearing seat is injection-molded and inserted into the rear wall of the water tub 3, and a stator fastening portion is correspondingly provided on the bearing seat, which is used to fix the motor stator on the bearing seat through a fastener, so that the stator can drive the water tub 3 to rotate by driving the rotor to wash clothes; the plastic shell 22 is covered on the outside of the coil assembly to prevent the coil assembly from being exposed to the outside, and to avoid insulation failure of the coil assembly during use, causing fire; and the stator mounting portion includes a plurality of mounting teeth 1 circumferentially distributed on the inner ring side of the annular stator body, and the mounting teeth 1 are thermoplastic plastic parts. The mounting teeth 1 are made of thermoplastic material with low rigidity and protrude from the inner ring side of the annular stator body, having a certain elasticity, so that the mounting teeth 1 can reduce the influence of the vibration generated by the stator on the clothing processing device through its own elastic properties; at the same time, since the multiple mounting teeth 1 are separated from each other to form an independently deformed cantilever structure, each mounting tooth 1 acts independently when utilizing elastic properties to reduce shock, thereby changing the vibration transmission path, and no vibration is transmitted between adjacent mounting teeth 1, thereby enhancing the elasticity of a single mounting tooth 1. This design not only improves the safety of the motor, but also reduces the vibration transmitted from the motor to the barrel, thereby optimizing the noise of the entire machine.

[0066] In addition to the above-mentioned preferred embodiments, the present invention also has other implementation modes. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection requested by the present invention.

Claims

1. A motor stator, comprising an annular stator body and a stator mounting portion fixed to the annular stator body, wherein the annular stator body comprises a coil assembly, wherein the coil assembly comprises a stator core and a coil frame injection-molded outside the stator core, wherein: The stator mounting portion comprises a plurality of mounting teeth circumferentially distributed on the inner ring side of the annular stator body, and the plurality of mounting teeth are separated from each other to form an independently deformable cantilever structure.

2. A motor stator according to claim 1, characterized in that: The annular stator body further comprises a plastic package shell, the plastic package shell is injection molded outside the coil assembly, the plastic package shell is a thermosetting plastic part, and the stator mounting part is a thermoplastic plastic part.

3. A motor stator according to claim 1, characterized in that: The mounting teeth are designed to be a sheet-like structure whose axial dimension is smaller than its radial dimension and circumferential dimension, so that the mounting teeth are elastic in the axial direction.

4. A motor stator according to claim 3, characterized in that: A reinforcing step is provided at a position where the mounting teeth are connected to the inner ring side of the annular stator body.

5. A motor stator according to claim 4, characterized in that: The mounting teeth are provided with stator fastening holes, and the mounting teeth are provided with annular ribs and middle connecting walls. The annular ribs are provided on the periphery of the stator fastening holes, and the middle connecting walls extend from the reinforcing steps of the mounting teeth to the annular ribs.

6. A motor stator according to claim 2, characterized in that: A gap is provided between two adjacent mounting teeth for disconnecting the two adjacent mounting teeth.

7. A motor stator according to claim 6, characterized in that: The gap extends radially to the plastic package shell and forms a groove on the plastic package shell.

8. The motor stator according to claim 6, characterized in that: The mounting teeth include a base directly connected to the annular stator body and a protrusion protruding inward from the base, the width of the base is greater than the width of the protrusion, and the base and the width form a "T"-shaped structure.

9. A motor stator according to claim 8, characterized in that: The mounting teeth are provided with stator fastening holes, and the stator fastening holes are arranged on the protruding parts.

10. The motor stator according to claim 1, characterized in that: The mounting teeth and the coil frame are an integrally formed structure; or, the mounting teeth are mounted on the coil frame via a connecting structure.

11. A clothes processing device, comprising: water container; It has a rear wall; A drum, which is arranged in the water cylinder; A connecting shaft, used for transmitting the driving force of the motor to the drum, the connecting shaft passing through the water holding cylinder and connected to the drum; Its characteristic is that it also includes a motor, which includes a rotor and the motor stator according to any one of claims 1 to 10, and the stator mounting portion is used to fix the motor stator to the rear wall of the water storage barrel through fasteners.

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