Motor and washing machine having the same

Abstract

The present invention discloses a motor and a washing machine having the same. The motor includes: a motor body, a circuit board assembly, a protective cover, and a connecting member. The circuit board assembly is disposed at one end of the motor body. The protective cover is disposed at one end of the motor body and covers at least a part of the circuit board assembly. The connecting member sequentially connects the motor body, the circuit board assembly, and the protective cover, and connects the protective cover and the circuit board assembly to the motor body. By using the connecting member to connect the motor body, the circuit board assembly, and the protective cover simultaneously, not only the number of fastening structures is reduced, but also the number of fastener connection structures can be reduced, thereby simplifying the structural design of the motor, facilitating the reduction of the production cost of the motor, and improving the disassembly and assembly efficiency of the motor, which further provides convenience for the assembly and maintenance of the motor. In addition, covering the circuit board assembly with the protective cover can protect the circuit board assembly from damage, which is beneficial to extending the service life of the circuit board assembly.

Description

Technical Field

[0001] The present invention belongs to the technical field of motors, and particularly relates to a motor and a washing machine having the same. Background Art

[0002] In the related art, the motor body, the PC board and the protective cover of the washing machine motor are all fixed separately by fasteners, resulting in a large number of fasteners used in the motor. Moreover, in order to enable the fasteners to have a fixing structure, screw holes need to be made on the motor end cover, which results in high costs, complex assembly and low reliability. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art.

[0004] To this end, the present invention provides a motor, which has fewer fastening structures, a simple structure, low production costs and high assembly efficiency.

[0005] The present invention also provides a washing machine having the above motor.

[0006] The motor according to the first aspect embodiment of the present invention includes: a motor body, a circuit board assembly, a protective cover and a connecting member. The circuit board assembly is provided at one end of the motor body. The protective cover is provided at the one end of the motor body and covers at least a part of the circuit board assembly. The connecting member sequentially connects the motor body, the circuit board assembly and the protective cover, and connects the protective cover and the circuit board assembly to the motor body.

[0007] The motor according to the embodiment of the present invention uses a connecting member to connect the motor body, the circuit board assembly and the protective cover at the same time. On the basis of ensuring the stable connection of each component of the motor, not only the number of fastening structures is reduced, but also the number of fastener connection structures can be reduced, thereby simplifying the structural design of the motor, being beneficial to reducing the production cost of the motor, and improving the disassembly and assembly efficiency of the motor, and further providing convenience for the assembly and maintenance of the motor. In addition, using the protective cover to cover the circuit board assembly can protect the circuit board assembly from damage and is beneficial to improving the service life of the circuit board assembly.

[0008] In the motor according to an embodiment of the present invention, a first mounting hole axially penetrating the motor body is provided on the motor body. A second mounting hole is provided on the circuit board assembly. A third mounting hole is provided on the protective cover. One end of the second mounting hole communicates with the first mounting hole and the other end communicates with the third mounting hole. The connecting member sequentially penetrates through the third mounting hole and the second mounting hole and is connected in the first mounting hole.

[0009] A motor according to an embodiment of the present invention, a clearance groove is defined on one side of the protective cover facing the circuit board assembly, the circuit board assembly is received in the clearance groove, the circuit board assembly includes: a circuit board and circuit components, the circuit board is disposed in the clearance groove and the peripheral wall of the clearance groove surrounds the outer peripheral edge of the circuit board and is located outside the outer peripheral edge of the circuit board, the circuit components are disposed on the side of the circuit board facing the protective cover and are received in the clearance groove.

[0010] According to an embodiment of the present invention, a limiting buckle for clamping with the outer peripheral edge of the circuit board assembly is provided on the inner peripheral wall of the clearance groove.

[0011] According to an embodiment of the present invention, the connecting member includes: a connecting rod, a fixed limiting end and a movable limiting end, the connecting rod sequentially passes through the third mounting hole, the second mounting hole and the first mounting hole, the fixed limiting end is disposed at one end of the connecting rod, the surface of the fixed limiting end facing the connecting rod abuts against the protective cover, the movable limiting end is movably sleeved on the other end of the connecting rod, the surface of the movable limiting end facing the connecting rod abuts against the motor body, a guiding portion is provided at the end of the connecting rod away from the fixed limiting end, and the diameter of the guiding portion gradually decreases from the end adjacent to the connecting rod to the end away from the connecting rod.

[0012] Further, the surface of the fixed limiting end facing the connecting rod abuts against the protective cover and includes: a limiting end head and a limiting boss, the limiting end head abuts against the protective cover, the limiting boss is received in the second mounting hole and the third mounting hole and is connected to the limiting end head, and the end surface of the limiting boss facing away from the limiting end head abuts against the end surface of the motor body facing the circuit board assembly.

[0013] Optionally, the length of the limiting boss is less than the sum of the axial lengths of the second mounting hole and the third mounting hole.

[0014] According to an embodiment of the present invention, anti-loosening teeth are formed on the surface of the fixed limiting end facing the connecting rod and / or the surface of the movable limiting end facing the connecting rod, and a fastening groove recessed inward is provided on the end surface of the fixed limiting end facing away from the connecting rod, and the cross section of the fastening groove is non-circular.

[0015] According to an embodiment of the present invention, the motor body includes: a front end cover, a rear end cover, a stator assembly, and a rotor assembly. A part of the first mounting hole is provided in the front end cover and penetrates the front end cover along the axial direction of the front end cover, and another part of the first mounting hole is provided in the rear end cover and penetrates the rear end cover along the axial direction of the rear end cover. The circuit board assembly is provided on a side of the rear end cover facing away from the front end cover. The stator assembly is provided between the front end cover and the rear end cover, and the rotor assembly is rotatably provided in the stator assembly.

[0016] Further, a side of the rear end cover facing the circuit board assembly has a support boss, the support boss is arranged around the first mounting hole, and the circuit board assembly is supported on the support boss.

[0017] According to an embodiment of the present invention, a side of the rear end cover facing the stator assembly defines an installation cavity adapted to cooperate with the stator assembly, and an avoidance groove for spacing the inner peripheral wall of the installation cavity from the stator assembly is defined on the inner peripheral wall of the installation cavity.

[0018] According to an embodiment of the present invention, the avoidance groove extends along the axial direction of the installation cavity and is recessed in a direction radially outward of the installation cavity, and the avoidance groove communicates with the first mounting hole.

[0019] A washing machine according to an embodiment of the second aspect of the present invention includes the motor according to the above embodiment.

[0020] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0021] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0022] Figure 1 is a schematic structural diagram of a motor according to an embodiment of the present invention;

[0023] Figure 2 is an assembly schematic diagram of a motor according to an embodiment of the present invention;

[0024] Figure 3 is an exploded view of a motor according to an embodiment of the present invention;

[0025] Figure 4 is a partial cross-sectional view of a motor according to an embodiment of the present invention;

[0026] Figure 5 is Figure 4 the enlarged view at A in

[0027] Figure 6 is a partial structural schematic diagram of a connector according to an embodiment of the present invention;

[0028] Figure 7 is Figure 6 a view of the structure in from another angle;

[0029] Figure 8 is Figure 6 a front view of the structure in ;

[0030] Figure 9 is a structural schematic diagram of a circuit board assembly according to an embodiment of the present invention;

[0031] Figure 10 is a structural schematic diagram of a protective cover according to an embodiment of the present invention;

[0032] Figure 11 is Figure 10 a view of the structure in from another angle;

[0033] Figure 12 is a combined structural schematic diagram of a circuit board assembly and a protective cover according to an embodiment of the present invention;

[0034] Figure 13 is Figure 12 an exploded view of the structure in ;

[0035] Figure 14 is a structural schematic diagram of a rear end cover according to an embodiment of the present invention;

[0036] Figure 15 is Figure 14 a view of the structure in from another angle.

[0037] Reference numerals:

[0038] 100: motor;

[0039] 10: motor body; 11: front end cover; 12: rear end cover; 121: support boss;

[0040] 122: clearance groove; 123: end cover plate; 124: support column; 13: stator assembly;

[0041] 131: avoidance groove; 14: rotor assembly; 15: first mounting hole;

[0042] 20: circuit board assembly; 21: circuit board; 22: electrical components; 23: second mounting hole;

[0043] 30: protective cover; 31: limit buckle; 32: third mounting hole;

[0044] 40: Connecting member; 41: Link rod; 42: Movable limiting end; 43: Fixed limiting end;

[0045] 431: Limiting end head; 432: Limiting boss; 433: Fastening groove; 44: Guide portion. Specific embodiments

[0046] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise stated, the meaning of "a plurality" is two or more.

[0048] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] Reference will be made below Figures 1-15 to describe the motor 100 according to an embodiment of the present invention.

[0050] As Figures 1-3 shown, the motor 100 according to an embodiment of the present invention is adapted to be connected to a washing machine to provide power for the washing machine. Among them, the motor 100 includes: a motor body 10, a circuit board assembly 20, a protective cover 30, and a connecting member 40.

[0051] Specifically, a motor shaft is disposed in the motor body 10, and the motor body 10 can be formed into a columnar shape coaxially disposed with the motor shaft. The circuit board assembly 20 is disposed at one end of the motor body 10. For example, the circuit board assembly 20 can be Figure 1 The motor shaft extends from the rear end of the motor body 10, and the circuit board assembly 20 can also be arranged at Figure 1 The motor shaft extends from the front end of the motor body 10. The protective cover 30 is connected to the motor body 10 and the protective cover 30 and the circuit board assembly 20 are arranged at the same end of the motor body 10. The protective cover 30 covers at least a part of the circuit board assembly 20, that is, the protective cover 30 can completely cover the circuit board assembly 20 or only cover a part of the circuit board assembly 20 to prevent the circuit board assembly 20 from being damaged.

[0052] Among them, the connecting member 40 connects the motor body 10, the circuit board assembly 20 and the protective cover 30 in sequence, and connects the protective cover 30 and the circuit board assembly 20 to the motor body 10. That is to say, the connecting member 40 simultaneously connects the motor body 10, the circuit board assembly 20 and the protective cover 30 during assembly, and connects the motor body 10, the circuit board assembly 20 and the protective cover 30 together to complete the assembly of the motor 100.

[0053] Therefore, according to the motor 100 of the embodiment of the present invention, the motor body 10, the circuit board assembly 20 and the protective cover 30 are simultaneously connected by the connecting piece 40. On the basis of ensuring the stable connection of the various components of the motor 100, not only the number of fastening structures is reduced, but also the number of fastener connection structures can be reduced, thereby simplifying the structural design of the motor 100, which is beneficial to reducing the production cost of the motor 100, and can improve the disassembly and assembly efficiency of the motor 100, thereby providing convenience for the assembly and maintenance of the motor 100.

[0054] In addition, using the protective cover 30 to cover the circuit board assembly 20 can protect the circuit board assembly 20 from damage, which is beneficial to improving the service life of the circuit board assembly 20.

[0055] According to a motor 100 of an embodiment of the present invention, the motor body 10 has a first mounting hole 15 that penetrates the motor body 10 along its axial direction, the circuit board assembly 20 is provided with a second mounting hole 23, and the protective cover 30 is provided with a third mounting hole 32. The second mounting hole 23 penetrates the circuit board assembly 20 along the axial direction of the first mounting hole 15, and the third mounting hole 32 penetrates the protective cover 30 along the axial direction of the first mounting hole 15, and one end of the second mounting hole 23 is connected to the first mounting hole 15 and the other end is connected to the third mounting hole 32. The connector 40 penetrates the third mounting hole 32 and the second mounting hole 23 in sequence and is connected to the first mounting hole 15, that is, the connector 40 passes through the third mounting hole 32 and the second mounting hole 23 and is connected to the motor body 10, thereby assembling the circuit board assembly 20 and the protective cover 30 on the motor body 10.

[0056] Among them, the first mounting hole 15, the second mounting hole 23, and the third mounting hole 32 cooperate with each other to form an integral mounting hole extending along the axial direction of the motor body 10. The connecting member 40 is inserted into the combined integral mounting hole, which can not only stably connect the circuit board assembly 20 and the protective cover 30 to the motor body 10, but also, compared with the prior art where the motor body 10 is first fastened with fasteners to complete the assembly, then the circuit board assembly 20 is installed on the motor body 10, and then the protective cover 30 is installed on the motor body 10 with fasteners, it reduces the number of fasteners used and also reduces the number of fastening structures corresponding to the fasteners, simplifies the structural design of the motor 100, reduces the difficulty of the production process, and can further improve the assembly efficiency.

[0057] As Figures 10-13 shown, according to an embodiment of the present invention, a clearance groove is defined on the side of the protective cover 30 facing the circuit board assembly 20, and the circuit board assembly 20 is received in the clearance groove. The clearance groove is provided on the side of the protective cover 30 facing the circuit board assembly 20, and the clearance groove is recessed in a direction away from the circuit board assembly 20.

[0058] Thus, not only can the occupied space of the circuit board assembly 20 and the protective cover 30 be reduced, thereby reducing the overall volume of the motor 100, but also the circuit board assembly 20 can be covered by the protective cover 30 to prevent the circuit board assembly 20 from being damaged by external collisions, which is beneficial to extending the service life of the motor 100. It can also prevent electric shock accidents caused by contact between the staff and the circuit board assembly 20 when using the motor 100, and improve the use safety of the motor 100.

[0059] As Figure 9 shown, according to an embodiment of the present invention, the circuit board assembly 20 includes: a circuit board 21 and circuit elements. The circuit board 21 is formed as a flat plate, and the circuit elements are provided on the circuit board 21. Among them, the circuit board 21 is provided in the clearance groove and the peripheral wall of the clearance groove surrounds the outer periphery of the circuit board 21. The outer periphery of the clearance groove is located outside the outer periphery of the circuit board 21. That is to say, the circuit board 21 is completely received in the clearance groove, and the outer periphery of the circuit board 21 abuts against the inner peripheral wall of the clearance groove. The circuit elements are provided on the side of the circuit board 21 facing the protective cover 30 and are received in the clearance groove.

[0060] The side of the clearance groove facing the motor body 10 is open, the circuit elements are received in the clearance groove, and the circuit board 21 is provided in the clearance groove and closes the open mouth of the clearance groove. This can prevent the circuit board assembly 20 from being damaged by collision with other components when leaking out of the clearance groove, further extending the service life of the circuit board assembly 20, and can ensure that the circuit board 21 assembly is completely wrapped to prevent the staff from touching it, further improving the use safety.

[0061] As shown Figure 10 In this embodiment, as shown, a limiting buckle 31 is provided on the inner peripheral wall of the clearance groove and is clamped with the outer peripheral edge of the circuit board assembly 20. The limiting buckle 31 is provided on the inner peripheral wall of the protective cover 30 and protrudes radially inward along the clearance groove. When the circuit board assembly 20 is received in the clearance groove, the outer peripheral edge of the circuit board 21 is clamped inside the limiting buckle 31, and thus the circuit board assembly 20 is clamped in the clearance groove.

[0062] By providing the limiting buckle 31 on the inner peripheral wall of the clearance groove, during the assembly of the motor 100, the circuit board assembly 20 can be pre-installed in the protective cover 30 to prevent the circuit board assembly 20 from detaching therefrom during the assembly of the protective cover 30. Preventing the circuit board assembly 20 from detaching therefrom not only improves the assembly stability of the motor 100, but also provides convenience for the assembly of the motor 100.

[0063] As shown Figures 6-8 In an embodiment of the present invention, as shown, the connecting member 40 includes: a connecting rod 41 and a fixed limiting end 43. Among them, the connecting rod 41 is formed as a rod-shaped member extending along a straight line, and the connecting rod 41 sequentially passes through the third mounting hole 32, the second mounting hole 23, and the first mounting hole 15. Among them, one end of the connecting rod 41 inserted into the first mounting hole 15 can be threadedly engaged in the first mounting hole 15.

[0064] As shown Figure 3 In addition, the connecting member 40 may further include: a movable limiting end 42. One end of the connecting member 40 away from the fixed limiting end 43 extends from one end of the first mounting hole 15 facing away from the second mounting hole 23. The movable limiting section is detachably connected to the connecting member 40. For example, the movable limiting section can be sleeved on the connecting member 40, and the inner peripheral wall of the movable limiting section is threadedly engaged with the outer peripheral wall of the connecting member 40. The threaded engagement between the movable limiting end 42 and the connecting member 40 has a simple structure and is convenient for assembly, improving the assembly efficiency of the motor 100.

[0065] Furthermore, when the connecting member 40 is inserted from the third mounting hole 32 and extends out from the first mounting hole 15, the surface of the fixed limiting end 43 facing the connecting rod 41 abuts against the protective cover 30, and the surface of the movable limiting end 42 facing the connecting rod 41 abuts against the motor body 10; when the connecting member 40 is inserted from the first mounting hole 15 and extends out from the third mounting hole 32, the surface of the fixed limiting end 43 facing the connecting rod 41 abuts against the motor body 10, and the surface of the movable limiting end 42 facing the connecting rod 41 abuts against the protective cover 30.

[0066] By providing a fixed limiting end 43 at one end of the connecting rod 41 and a movable limiting section at the other end of the connecting rod 41, it is not only convenient for the assembly of the connecting member 40, but also the use of the fixed limiting end 43 and the movable limiting end 42 to abut against both ends of the motor body 10 and the protective cover 30 can improve the assembly stability of the motor 100.

[0067] Furthermore, as Figure 4 and 5 shown, the surface of the fixed limiting end 43 facing the connecting rod 41 abuts against the protective cover 30, and the fixed limiting end 43 includes: a limiting end head 431 and a limiting boss 432. The limiting end head 431 abuts against the protective cover 30, and the limiting boss 432 is received in the second mounting hole 23 and the third mounting hole 32 and is connected to the limiting end head 431.

[0068] That is to say, the limiting boss 432 is connected between the connecting rod 41 and the limiting end head 431, and the limiting boss 432 is inserted into the second mounting hole 23 and the third mounting hole 32. The surface of the limiting end head 431 facing the limiting boss 432 abuts against the outer surface of the protective cover 30, and the end surface of the limiting boss 432 facing away from the limiting end head 431 abuts against the end surface of the motor body 10 facing the circuit board assembly 20.

[0069] When the connecting member 40 is inserted into the first mounting hole 15, the second mounting hole 23 and the third mounting hole 32, the limiting boss 432 abuts against the motor body 10, which can ensure the assembly stability of the motor body 10 and prevent the motor body 10 from malfunctioning. At the same time, the limiting end head 431 abuts against the protective cover 30, which can improve the assembly stability of the protective cover 30 and the circuit board assembly 20.

[0070] Among them, the end surface of the fixed limiting end 43 facing away from the connecting rod 41 has a fastening groove 433 that is recessed inward, and the cross-section of the fastening groove 433 is non-circular. By providing the non-circular fastening groove 433, the staff can insert a tool into the fastening groove 433 to fasten the connecting member 40, with a simple structure and convenient operation.

[0071] Optionally, the length of the limiting boss 432 is less than the sum of the axial lengths of the second mounting hole 23 and the third mounting hole 32. That is to say, when the connecting member 40 is connected in the first mounting hole 15, one end of the limiting boss 432 facing the connecting rod 41 abuts against the motor body 10, and one end of the limiting end head 431 facing the limiting boss 432 abuts against the protective cover 30. And because the length of the limiting boss 432 is short, the protective cover 30 and the circuit board assembly 20 can be stably connected to the motor body 10, preventing the protective cover 30 and the circuit board assembly 20 from shaking relative to the motor body 10 and improving the stability of the motor 100.

[0072] In this embodiment, anti-loosening teeth are formed on the surface of the fixed limiting end 43 facing the connecting rod 41 and / or the surface of the movable limiting end 42 facing the connecting rod 41. The anti-loosening teeth include a plurality of racks, the racks extend along the radial direction of the fixed limiting end 43 or the movable limiting end 42, and the plurality of racks are arranged along the circumferential direction of the fixed limiting end 43 or the movable limiting end 42. By providing the anti-loosening teeth, on the one hand, the assembly stability of the connecting member 40 can be improved, preventing the connecting member 40 from relatively rotating in the mounting hole. At the same time, it can also prevent the relative rotation between the movable limiting end 42 and the connecting rod 41 from causing the loosening of the connecting member 40, further improving the assembly stability of the motor 100.

[0073] As Figure 7 shown, according to an embodiment of the present invention, a guiding portion 44 is provided at one end of the connecting rod 41 away from the fixed limiting end 43. The guiding portion 44 extends along the axial direction of the connecting rod 41, and the diameter of the guiding portion 44 gradually decreases from the end adjacent to the connecting rod 41 to the end away from the connecting rod 41.

[0074] The connecting member 40 uses the guiding portion 44 to sequentially extend into the third mounting hole 32, the second mounting hole 23, and the first mounting hole 15 at the front end. Since the diameter of the front end of the guiding portion 44 is smaller, it is convenient to guide the connecting member 40, which is beneficial to reducing the passing resistance of the connecting member 40 in the mounting hole and improving the assembly efficiency.

[0075] As Figure 3 shown, according to an embodiment of the present invention, the motor body 10 includes: a front end cover 11, a rear end cover 12, a stator assembly 13, and a rotor assembly 14.

[0076] Among them, the front end cover 11 and the rear end cover 12 are generally formed as coaxially arranged circular rings. The front end cover 11 and the rear end cover 12 are spaced apart along the axial direction. The stator assembly 13 is clamped between the front end cover 11 and the rear end cover 12. The circuit board assembly 20 is provided on the side of the rear end cover 12 facing away from the front end cover 11. A rotor cavity is defined in the stator assembly 13. One end of the rotor cavity communicates with the inner ring of the front end cover 11, and the other end of the rotor cavity communicates with the inner ring of the rear end cover 12. The rotor assembly 14 is rotatably arranged in the rotor cavity, and one end of the rotor assembly 14 is rotatably inserted into the inner ring of the front end cover 11, and the other end of the rotor assembly 14 is rotatably inserted into the inner ring of the rear end cover 12.

[0077] A part of the first mounting hole 15 is provided inside the front end cover 11 and axially penetrates the front end cover 11 along the axis of the front end cover 11. Another part of the first mounting hole 15 is provided inside the rear end cover 12 and axially penetrates the rear end cover 12 along the axis of the rear end cover 12. And the central axis of the part of the first mounting hole 15 located in the front end cover 11 coincides with the central axis of the part located in the rear end cover 12. The connecting member 40 sequentially passes through the third mounting hole 32, the second mounting hole 23, the part of the first mounting hole 15 located in the rear end cover 12, and then passes through the part of the first mounting hole 15 located in the front end cover 11, and finally is connected to the movable fixed end.

[0078] By using the connecting member 40 to fasten the front end cover 11, the rear end cover 12, the stator assembly 13 and the rotor assembly 14, the number of fastening structures can be further reduced, the structural arrangement of the motor body 10 can be simplified, which is beneficial to reducing the production cost of the motor 100, and the disassembly and assembly efficiency can be improved.

[0079] Optionally, an avoidance groove 131 is provided on the outer peripheral wall of the stator assembly 13. The avoidance groove 131 extends along the axis of the first mounting hole 15 and is recessed inward along the outer peripheral wall of the electronic assembly. One end of the avoidance groove 131 communicates with the part of the first mounting hole 15 located inside the front end cover 11, and the other end of the avoidance groove 131 communicates with the part of the first mounting hole 15 located inside the rear end cover 12.

[0080] By providing the avoidance groove 131 on the outer peripheral wall of the stator assembly 13, a receiving space can be provided for the connecting member 40 to prevent the connecting member 40 from contacting or rubbing against the outer peripheral wall of the stator assembly 13 and causing damage.

[0081] Further, as Figure 4 、 5 shown in 14 and 15, a support boss 121 is provided on the side of the rear end cover 12 facing the circuit board assembly 20. The support boss 121 is arranged around the first mounting hole 15 and extends axially along the first mounting hole 15 towards the circuit board assembly 20, and the circuit board assembly 20 is supported on the support boss 121.

[0082] By providing the support boss 121 on the rear end cover 12 and using the support boss 121 to support the circuit board assembly 20, not only can the acting force of the protective cover 30 and the rear end cover 12 clamping the circuit board assembly 20 be increased, which is beneficial to improving the assembly stability of the circuit board assembly 20, but also the distance between the circuit board assembly 20 and the rear end cover 12 can be increased. On the one hand, the gap between the circuit board assembly 20 and the rear end cover 12 can promote ventilation, which is beneficial to improving the heat dissipation efficiency of the motor body 10 and the circuit board assembly 20. On the other hand, it can prevent the circuit board assembly 20 from being damaged due to the over-high temperature of the motor body 10.

[0083] As Figure 15As shown, in this embodiment, on the side of the rear end cover 12 facing the stator assembly, there is defined an installation cavity adapted to cooperate with the stator assembly 13. The installation cavity is open in the direction facing the stator assembly 13. During the assembly process of the motor 100, one end of the stator assembly 13 facing the rear end cover 12 extends into the installation cavity. On the inner peripheral wall of the installation cavity, there is defined a clearance groove 122 for spacing apart the inner peripheral wall of the installation cavity from the stator assembly 13. That is to say, on the inner peripheral wall of the installation cavity, there is defined a clearance groove 122, and the clearance groove 122 can space apart the inner peripheral wall of the installation cavity from the outer peripheral wall of the stator assembly 13. This can not only increase the inner diameter of the installation cavity or increase the diameter of the inscribed circle in the installation cavity, increasing the accommodation capacity of the installation cavity, facilitating the assembly between the stator assembly 13 and the rear end cover 12, improving the assembly efficiency of the motor 100, but also prevent mutual influence between the rear end cover 12 and the stator assembly 13.

[0084] Furthermore, as Figure 15 shown, the clearance groove 122 is provided at a position of the rear end cover 12 adjacent to the first mounting hole 15. The clearance groove 122 extends along the axial direction of the installation cavity and is recessed in the radially outward direction of the installation cavity, and the clearance groove 122 communicates with the first mounting hole 15. One side of the first mounting hole 15 facing the central axis of the rear end cover 12 is open, and the clearance groove 122 is located inside the first mounting hole 15 and communicates with the first mounting hole 15.

[0085] Among them, the rear end cover 12 includes an end cover plate 123 and support columns 124 connected to the end cover plate. The support columns 124 are provided on the side of the end cover plate 123 facing the stator assembly 13, and the support columns 124 extend along the axial direction of the end cover plate 123. The first mounting hole 15 axially penetrates the support columns 124 along the axial direction of the support columns 124. One end of the support column 124 is connected to the end cover plate 123, and the other end abuts against the stator assembly 13 in a mating manner. There are multiple support columns 124, and the multiple support columns 124 are spaced apart along the circumferential direction of the end cover plate 123. One end of the stator assembly 13 facing the rear end cover 12 is provided inside the multiple support columns 124.

[0086] One side of the support column 124 facing the central axis of the end cover plate 123 is open. That is to say, the cross-sectional shape of the support column 124 is a part of a ring. For example, it can be a sector ring, and the central angle of the sector ring is greater than 180°. The inner side of the ring defines the first mounting hole 15, and the notch of the ring forms the clearance groove 122. This can reduce the occupied space of the support column 124 and prevent the inner peripheral wall of the support column 124 from touching the stator assembly 13 and affecting the assembly efficiency of the motor 100.

[0087] The washing machine according to the second aspect of the present invention includes the motor 100 described in the above embodiments. By adopting the motor 100 in the above embodiments, the structural design of the washing machine can be simplified, which is beneficial to reducing the production cost of the washing machine and can also improve the assembly efficiency of the washing machine.

[0088] The other components and operations of the washing machine according to the embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail here.

[0089] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0090] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A motor, characterized in that, Comprising: Motor body; Circuit board assembly, which is arranged at one end of the motor body; Protective cover, which is arranged at the one end of the motor body and covers at least a part of the circuit board assembly; Connecting piece, which sequentially connects the motor body, the circuit board assembly and the protective cover, and connects the protective cover and the circuit board assembly to the motor body; The motor body has a first mounting hole axially penetrating through the motor body, the circuit board assembly is provided with a second mounting hole, the protective cover is provided with a third mounting hole, one end of the second mounting hole communicates with the first mounting hole and the other end communicates with the third mounting hole; The connecting piece sequentially penetrates through the third mounting hole and the second mounting hole and is connected in the first mounting hole; The connecting piece includes: Link rod, which sequentially penetrates through the third mounting hole, the second mounting hole and the first mounting hole; Fixed limiting end, which is arranged at one end of the link rod, and the surface of the fixed limiting end facing the link rod abuts against the protective cover; Movable limiting end, which is movably sleeved at the other end of the link rod, and the surface of the movable limiting end facing the link rod abuts against the motor body; A guiding part is arranged at the end of the link rod far from the fixed limiting end, and the diameter of the guiding part gradually decreases from the end adjacent to the link rod to the end far from the link rod.

2. The motor according to claim 1, wherein, An avoidance groove is defined on the side of the protective cover facing the circuit board assembly, the circuit board assembly is received in the avoidance groove, and the circuit board assembly includes: Circuit board, which is arranged in the avoidance groove and the peripheral wall of the avoidance groove surrounds the outer peripheral edge of the circuit board; Circuit element, which is arranged on the side of the circuit board facing the protective cover and is received in the avoidance groove.

3. The motor according to claim 2, characterized in that, Limit buckles for clamping with the outer peripheral edge of the circuit board assembly are arranged on the inner peripheral wall of the avoidance groove.

4. The motor according to claim 1, characterized in that, The surface of the fixed limiting end facing the link rod abuts against the protective cover and includes: Limit end head, which abuts against the protective cover; Limit boss, which is received in the second mounting hole and the third mounting hole and is connected to the limit end head, and the end surface of the limit boss facing away from the limit end head abuts against the end surface of the motor body facing the circuit board assembly.

5. The motor according to claim 4, characterized in that, The length of the limit boss is less than the sum of the axial lengths of the second mounting hole and the third mounting hole.

6. The motor according to claim 1, wherein Anti-loosening teeth are formed on the surface of the fixed limiting end facing the link rod and / or the surface of the movable limiting end facing the link rod; The end surface of the fixed limiting end facing away from the link rod has an inwardly recessed fastening groove, and the cross section of the fastening groove is non-circular.

7. The motor according to claim 1, characterized in that, The motor body includes: Front end cover, a part of the first mounting hole is arranged in the front end cover and axially penetrates through the front end cover; A rear end cover, another part of the first mounting hole is provided inside the rear end cover and axially penetrates the rear end cover along the axial direction of the rear end cover, and the circuit board assembly is provided on a side of the rear end cover facing away from the front end cover; A stator assembly, the stator assembly is provided between the front end cover and the rear end cover; A rotor assembly, the rotor assembly is rotatably provided inside the stator assembly.

8. The motor according to claim 7, wherein A side of the rear end cover facing the circuit board assembly has a support boss, the support boss is arranged around the first mounting hole, and the circuit board assembly is supported on the support boss.

9. The motor according to claim 7, wherein A side of the rear end cover facing the stator assembly defines a mounting cavity adapted to cooperate with the stator assembly, and a clearance groove for spacing the inner peripheral wall of the mounting cavity from the stator assembly is defined on the inner peripheral wall of the mounting cavity.

10. The motor according to claim 9, characterized in that, The clearance groove extends along the axial direction of the mounting cavity and is recessed in a direction radially outward of the mounting cavity, and the clearance groove communicates with the first mounting hole.

11. A washing machine, characterized in that, Including the motor according to any one of claims 1-10.

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