Motor and vacuum cleaner

Abstract

The present application discloses a motor and a vacuum cleaner, which relates to the technical field of motors, and includes a front bracket assembly and a rear bracket assembly that match each other, and a rotor assembly and a stator assembly that are located between the front bracket assembly and the rear bracket assembly and match each other; the stator assembly is sleeved on the rotor assembly, and the two ends of the rotor assembly are respectively rotatably connected to the front bracket assembly and the rear bracket assembly, and one end of the rotor assembly connected to the rear bracket assembly is provided with a cooling fan blade, and the cooling fan blade is located on the side of the rear bracket assembly away from the front bracket assembly; the front bracket assembly and the rear bracket assembly are respectively connected and fixed to the corresponding end of the stator assembly, and the front bracket assembly and the rear bracket assembly are both provided with perforations. The present application has the effect of reducing the wind wear of the motor and significantly improving the efficiency of the motor.

Description

Technical Field

[0001] The present application relates to the technical field of motors, and in particular to a motor and a vacuum cleaner. Background Art

[0002] With the development of economy and the progress of society, people are pursuing the quality of life and taking the cleanliness of the environment as an important indicator to evaluate the quality of life. Therefore, in order to improve the cleanliness of the environment, vacuum cleaners came into being. In the vacuum cleaner architecture, the motor is a most important component and provides the power for the vacuum cleaner to flow air.

[0003] A Chinese patent with announcement number CN213883043U discloses a noise reduction vacuum cleaner and a vacuum cleaner motor, which includes a motor front cover, a motor rear cover, and a motor body; the motor front cover includes a front cover body and an air inlet arranged at one end of the front cover body, the motor rear cover includes a rear cover body and an air outlet arranged at one end of the rear cover body, one end of the front cover body is connected to one end of the rear cover body to form an air collecting hood, and the air inlet and the air outlet are respectively located at two opposite ends of the air collecting hood; the motor body is arranged in the air collecting hood, and a plurality of continuous gaps are provided between the peripheral side of the motor body and the inner side wall of the air collecting hood.

[0004] However, the vacuum cleaner motor has a complex overall structure and a large volume, which affects the efficiency of the motor and needs to be improved, by providing a plurality of continuous gaps between the peripheral side of the motor body and the inner wall of the air collecting hood to improve the airflow guidance and heat dissipation capabilities. Summary of the invention

[0005] In view of this, the first object of the present application is to provide a motor to achieve the purpose of significantly improving the efficiency of use. The specific scheme is as follows:

[0006] A motor comprises a front bracket assembly and a rear bracket assembly that match each other, and a rotor assembly and a stator assembly that are located between the front bracket assembly and the rear bracket assembly and match each other; the stator assembly is sleeved on the rotor assembly, and the two ends of the rotor assembly are respectively rotatably connected to the front bracket assembly and the rear bracket assembly, and the end of the rotor assembly connected to the rear bracket assembly is provided with a cooling fan blade, and the cooling fan blade is located on a side of the rear bracket assembly away from the front bracket assembly; the front bracket assembly and the rear bracket assembly are respectively connected and fixed to the corresponding end of the stator assembly, and the front bracket assembly and the rear bracket assembly are both provided with through holes.

[0007] Preferably: a guide cavity is provided on the side of the rear bracket assembly facing the front bracket assembly, a support grid frame is provided on the rear side of the rear bracket assembly, the guide cavity is communicated with the through hole, the cooling fan blade is located on the rear side of the support grid frame, an axis connection part is provided on the front side of the front bracket assembly, the axis of the axis connection part coincides with the axis of the cooling fan blade, and an opening for exposing the stator assembly is formed between the front bracket assembly and the rear bracket assembly.

[0008] Preferably: both ends of the front side of the rear bracket assembly are symmetrically provided with rear fixing parts, and both ends of the rear side of the front bracket assembly are symmetrically provided with front fixing parts, the two front fixing parts are respectively matched with the corresponding rear fixing parts, and are threadedly connected with connecting bolts, and the through holes include multiple front side wall holes and multiple front side bottom holes, the multiple front side wall holes are symmetrically distributed on the two side walls of the front bracket assembly, and the multiple front side bottom holes are arrayed on the front side wall of the front bracket assembly.

[0009] Preferably: the front bracket assembly is in the shape of a cube, the front side wall hole is located on the left and right side walls or the upper and lower side walls that are symmetrical on two sides of the front bracket assembly, the front fixing portion is located on the upper and lower side walls or the left and right side walls that are symmetrical on the other two sides of the front bracket assembly, and the front bracket assembly is provided with two symmetrically distributed carbon brush insertion grooves, and the two carbon brush insertion grooves are respectively matched with the corresponding positions of the front fixing portions.

[0010] Preferably: two carbon brush ventilation bottom holes respectively matching the corresponding carbon brush plug-in slots are arranged on the front side of the front bracket assembly; the four corners of the front bracket assembly are chamfered, and inclined side wall holes are arranged on the chamfers; four carbon brush side holes are arranged on the outer peripheral side wall of the front bracket assembly, and every two of the carbon brush side holes are symmetrically distributed at the two ends of the corresponding carbon brush plug-in slot; and a fan blade ring body is arranged on the rear side of the rear bracket assembly, and the cooling fan blades are located in the fan blade ring body; an inclined guide wall is arranged on the side of the guide inner cavity close to the fan blade ring body.

[0011] Preferably: the rotor assembly includes a rotor shaft, both ends of which are rotatably connected to the shaft connection part and the supporting grid frame respectively, the rotor shaft is provided with a rotor core, and the rotor core is provided with a rotor winding; the stator assembly includes a stator core, the stator core is provided with a connecting slot matching the rotor core, two stator slots symmetrically distributed relative to the connecting slot, and two annular stator windings symmetrically distributed relative to the connecting slot, and the two stator windings respectively and simultaneously pass through the corresponding ends of the two stator slots.

[0012] Preferably: the stator slot is W-shaped, and an opening is formed on the side where the two stator slots face each other, and the opening of the stator slot is connected to the corresponding side of the connecting slot; stator slot paper is inserted in the stator slot, and the stator slot paper includes a W-shaped central abutment portion that is in contact with the stator core and two end abutment portions at both ends symmetrical to the central abutment portion, the opening of the stator slot is formed between the corresponding two end abutment portions, and a winding slot for the stator winding to pass through is formed between the end abutment portion and the central abutment portion; stator end plates are provided at both ends of the stator core in the axial direction, and the part of the stator winding that passes through the stator core is abutted and fixed to the stator end plates, and the stator end plates are square-shaped, and terminal sockets are provided at the four corners of the stator end plates, and piercing terminals are provided in the terminal sockets.

[0013] Preferably: the rotor core is provided with a plurality of slot paper slots with equal arc distribution, the slot paper slots are provided with V-shaped rotor slot papers, and the rotor winding is wound in two adjacent rotor slot papers; the rotor core is provided with a plurality of slot covers with equal arc distribution along the radial outer side, the two sides of the slot cover are respectively matched with the corresponding slot paper slots, and a gap with a width smaller than the width of the slot paper slot away from the end of the rotating shaft is formed between two adjacent slot covers; a rotor slot wedge is provided between two adjacent slot covers, the width of the rotor slot wedge is larger than the width of the gap, and the rotor slot wedge is located on the side of the slot cover facing the rotor rotating shaft.

[0014] Preferably: the rotor shaft includes two end plate connections and a steering connection respectively located at both ends of the rotor core along the axis; the steering connection is connected to an end of one of the end plate connections away from the rotor core and is provided with a commutator; the end plate connection is provided with a rotor end plate fixedly abutted against the rotor core; and a bearing is provided at an end of the other end plate connection away from the rotor core, and the bearing is used to be connected to the support grid frame.

[0015] A second object of the present application is to provide a vacuum cleaner comprising the motor as described above.

[0016] It can be seen from the above scheme that the present application provides a motor and a vacuum cleaner, and the motor has the following beneficial effects:

[0017] 1. The stator assembly and the rotor assembly are effectively matched by matching the connecting slots with the rotor core, and when the connecting slots are matched with the stator windings for installation, the matching efficiency of the stator assembly and the rotor assembly is significantly improved;

[0018] 2. By installing the cooling fan blades on the side of the supporting grille frame away from the front bracket assembly, the air outlet efficiency of the cooling fan blades is improved, and combined with the wrapping effect of the fan blade ring, the load of the cooling fan blades is reduced, and the wind wear of the motor is reduced, thereby improving the ventilation and heat dissipation effect of the motor while improving the efficiency of the motor;

[0019] 3. By arranging carbon brush side holes, inclined side wall holes and carbon brush ventilation bottom holes around the carbon brush insertion slot, when the cooling fan blade is working, the airflow is driven to pass through the carbon brush assembly of the motor, and the heat generated between the carbon brush assembly and the rotor is taken away. The inclined guide wall is combined to guide the gas flow, and the front bottom hole and the positive side wall hole are used to allow the airflow to enter the guide cavity, so that the airflow flows from the front bracket assembly to the rear bracket assembly in an orderly manner, and is discharged through the support grid frame after absorbing the heat in the motor, so as to achieve the purpose of improving the heat dissipation effect;

[0020] 4. The rotor winding is installed and fixed through the structure of rotor slot paper, rotor slot wedge and rotor core, thereby significantly improving the coordination efficiency of the stator assembly and the rotor assembly in coordination with the stator core;

[0021] 5. The rotor core is further installed and fixed by the rotor end plate, so that the rotor assembly has a high structural stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0023] Figure 1 This is a schematic diagram of the structure of the motor disclosed in this application;

[0024] Figure 2 This is a schematic diagram of the exploded structure of the motor disclosed in this application;

[0025] Figure 3 This is a schematic diagram of the exploded structure of the rotor assembly and the stator assembly disclosed in this application.

[0026] Description of reference numerals:

[0027] 1. rotor assembly; 11. rotor shaft; 111. steering connection; 112. end plate connection; 113. rotor core; 1131. slot paper slot; 1132. slot cover; 1133. gap; 12. rotor slot paper; 13. rotor slot wedge; 14. rotor end plate; 15. rotor winding; 16. bearing; 17. commutator;

[0028] 2. stator assembly; 21. stator core; 211. stator slot; 212. connection slot; 22. stator end plate; 221. terminal socket; 23. stator slot paper; 231. center abutment; 232. end abutment; 233. winding slot; 24. stator winding; 25. piercing terminal;

[0029] 3. Front bracket assembly; 31. Shaft connection part; 32. Front fixing part; 33. Carbon brush insertion slot; 331. Carbon brush side hole; 332. Inclined side wall hole; 333. Carbon brush ventilation bottom hole; 34. Positive side wall hole; 35. Front bottom hole; 36. Flat gasket; 37. Nut; 38. Support sleeve; 39. Insertion hole;

[0030] 4. Rear bracket assembly; 41. Guide cavity; 411. Inclined guide wall; 42. Fan blade ring; 43. Rear fixing part; 44. Support grid frame; 5. Cooling fan blade; 6. Carbon brush assembly; 7. Connecting bolts. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] like Figure 1 As shown, a motor includes a front bracket assembly 3 and a rear bracket assembly 4 that match each other, and a rotor assembly 1 and a stator assembly 2 that are located between the front bracket assembly 3 and the rear bracket assembly 4 and match each other. The front bracket assembly 3 and the rear bracket assembly 4 are respectively connected and fixed to corresponding ends of the stator assembly 2, and both ends of the rotor assembly 1 are respectively rotatably connected to the front bracket assembly 3 and the rear bracket assembly 4, and an opening for exposing the stator assembly 2 is formed between the front bracket assembly 3 and the rear bracket assembly 4, so that the part of the stator assembly 2 located at the opening has the effect of improving the heat dissipation performance when avoiding being blocked by the front bracket assembly 3 and the rear bracket assembly 4.

[0033] like Figure 2 , Figure 3As shown, the stator assembly 2 is sleeved on the rotor assembly 1, and a cooling fan blade 5 is provided at one end of the rotor assembly 1 connected to the rear bracket assembly 4. The cooling fan blade 5 is connected to the rotor assembly 1 so that the cooling fan blade 5 rotates under the drive of the rotor assembly 1, thereby achieving the effect of effectively dissipating heat for the motor. The cooling fan blade 5 is located on the side of the rear bracket assembly 4 away from the front bracket assembly 3, and both the front bracket assembly 3 and the rear bracket assembly 4 are provided with a perforation. The perforation on the front bracket assembly 3 is connected to the inner side of the stator assembly 2 and the rotor assembly 1. Correspondingly, the perforations on the rear bracket assembly 4 are connected to the inner sides of the stator assembly 2 and the rotor assembly 1, so that when the rotor assembly 1 drives the cooling fan blades 5 to rotate, the airflow passes through the perforations on the front bracket assembly 3 and enters between the front bracket assembly 3 and the stator assembly 2, and then passes through the inner sides of the stator assembly 2 and the rotor assembly 1, between the stator assembly 2 and the rear bracket assembly 4, and the perforations on the rear bracket assembly 4 in turn, thereby forming a stable gas flow path driven by the cooling fan blades 5, thereby significantly improving the structural rationality and heat dissipation performance of the motor.

[0034] It should be mentioned that a flow guide cavity 41 is provided on the side of the rear support assembly 4 facing the front support assembly 3. A support grid frame 44 covered with perforations is provided on the rear side of the rear support assembly 4. The flow guide cavity 41 is connected to the perforations. At the same time, the cooling fan blade 5 is located on the rear side of the support grid frame 44, and an axis connection portion 31 is provided on the front side of the front support assembly 3. The axis of the axis connection portion 31 coincides with the axis of the cooling fan blade 5.

[0035] At the same time, rear fixing parts 43 are provided at both ends of the front side of the rear bracket assembly 4, which are symmetrical to each other. Correspondingly, front fixing parts 32 are provided at both ends of the rear side of the front bracket assembly 3, which are symmetrical to each other. The two front fixing parts 32 are matched with the corresponding rear fixing parts 43, respectively, and are threadedly connected with connecting bolts 7. The perforations include a plurality of positive side wall holes 34 and a plurality of front bottom holes 35 located on the front bracket assembly 3. Among them, the plurality of positive side wall holes 34 are symmetrically distributed on the two side walls of the front bracket assembly 3, and the plurality of front bottom holes 35 are distributed in an array on the front side wall of the front bracket assembly 3.

[0036] like Figure 2 As shown, the front bracket assembly 3 is in the shape of a cube. The front side wall holes 34 are located on the symmetrical left and right or upper and lower side walls of the front bracket assembly 3 on two sides, and the front fixing portion 32 is located on the symmetrical upper and lower or left and right side walls of the other two sides of the front bracket assembly 3. Two symmetrically distributed carbon brush insertion slots 33 are provided on the front bracket assembly 3, and the two carbon brush insertion slots 33 are matched with the positions of the corresponding front fixing portions 32, so that when the front bracket assembly 3 and the rear bracket assembly 4 are matched and installed, the connecting bolts 7 pass through the carbon brush insertion slots 33 and enter the inner side of the front bracket assembly 3, and the front fixing portion 32 and the rear fixing portion 43 are threadedly connected to complete the installation and fixation of the front bracket assembly 3 and the rear bracket assembly 4.

[0037] It should be mentioned that two carbon brush ventilation bottom holes 333 are provided on the front side of the front bracket assembly 3, which are matched with the corresponding carbon brush plug-in slots 33 respectively. The four corners of the front bracket assembly 3 are chamfered, and inclined side wall holes 332 are provided on the chamfers. Four carbon brush side holes 331 are provided on the outer peripheral side wall of the front bracket assembly 3, and every two carbon brush side holes 331 are symmetrically distributed at both ends of the corresponding carbon brush plug-in slots 33. At the same time, a fan blade ring body 42 is provided on the rear side of the rear bracket assembly 4. The cooling fan blade 5 is located in the fan blade ring body 42, and an inclined guide wall 411 is provided on the side of the guide inner cavity 41 close to the fan blade ring body 42, so as to guide the gas to flow to the perforations on the support grid frame 44 through the inclined guide wall 411.

[0038] like Figure 2 , Figure 3 As shown, the rotor assembly 1 includes a rotor shaft 11. Both ends of the rotor shaft 11 are rotatably connected to the shaft connection portion 31 and the support grid frame 44. Among them, one end of the rotor shaft 11 passing through the shaft connection portion 31 is sleeved with a support sleeve 38, a flat washer 36 and a nut 37 in sequence to complete the installation of the rotor assembly 1 and form a stable rotation connection structure between the rotor assembly 1 and the front bracket assembly 3.

[0039] The rotor shaft 11 is provided with a rotor core 113, and a rotor winding 15 is provided on the rotor core 113. Correspondingly, the stator assembly 2 includes a stator core 21. The stator core 21 is provided with a connecting slot 212 matching the rotor core 113, two stator slots 211 symmetrically distributed relative to the connecting slot 212, and two annular stator windings 24 symmetrically distributed relative to the connecting slot 212. The two stator windings 24 respectively and simultaneously pass through the corresponding ends of the two stator slots 211. Among them, the stator slot 211 is W-shaped, and an opening is formed on the side of the two stator slots 211 facing each other. The opening of the stator slot 211 is connected to the corresponding side of the connecting slot 212. At the same time, a stator slot paper 23 is inserted into the stator slot 211. The stator slot paper 23 includes a W-shaped central abutment portion 231 that is attached to the stator core 21 and two end abutment portions 232 that are symmetrical to the two ends of the central abutment portion 231. The opening of the stator through slot 211 is formed between the two corresponding end abutment portions 232, and a winding through slot 233 for the stator winding 24 to pass through is formed between the end abutment portion 232 and the central abutment portion 231. Among them, stator end plates 22 are provided at both ends of the stator core 21 in the axial direction. The part of the stator winding 24 that passes through the stator core 21 is abutted and fixed to the stator end plate 22. The stator end plate 22 is square-shaped, and terminal sockets 221 are provided at the four corners of the stator end plate 22. The terminal sockets 221 are provided with piercing terminals 25, so that the piercing terminals 25 are fixed through the terminal sockets 221, and electrical connection is performed through the piercing terminals 25. Correspondingly, four plug holes 39 matching the corresponding terminal sockets 221 are provided on the front bracket assembly 3 to achieve the purpose of stably connecting the front bracket assembly 3 and the stator assembly 2 .

[0040] like Figure 3 As shown, the rotor core 113 is provided with a plurality of slot paper slots 1131 with equal arc distribution. The slot paper slots 1131 are provided with V-shaped rotor slot paper 12, and the rotor winding 15 is wound in two adjacent rotor slot paper 12. It should be mentioned that a plurality of slot covers 1132 with equal arc distribution are provided on the radial outer side of the rotor core 113. The two sides of the slot cover 1132 are matched with the corresponding slot paper slots 1131 respectively, and a gap 1133 with a width smaller than the width of the slot paper slot 1131 away from the end of the rotating shaft is formed between two adjacent slot covers 1132. A rotor slot wedge 13 is provided between two adjacent slot covers 1132. Among them, the width of the rotor slot wedge 13 is greater than the width of the gap 1133, and the rotor slot wedge 13 is located on the side of the slot cover 1132 facing the rotor rotating shaft 11.

[0041] It should be noted that the rotor shaft 11 includes two end plate connection parts 112 and a steering connection part 111 respectively located at both ends of the rotor core 113 along the axis. The steering connection part 111 is connected to one end of one of the end plate connection parts 112 away from the rotor core 113, and is provided with a commutator 17. The end plate connection part 112 is provided with a rotor end plate 14 fixedly abutting against the rotor core 113, and the other end plate connection part 112 is provided with a bearing 16 at one end away from the rotor core 113. The bearing 16 is used to be connected to the support grid frame 44 and to be sleeved on the rotor shaft 11.

[0042] A vacuum cleaner comprises the motor as described above.

[0043] In summary, the motor of the present application realizes effective coordination between the stator assembly 2 and the rotor assembly 1 by cooperating the connecting slot 212 with the rotor core 113, and when the connecting slot 212 is installed in coordination with the stator winding 24, the coordination working efficiency of the stator assembly 2 and the rotor assembly 1 is significantly improved. At the same time, by installing the cooling fan blade 5 on the side of the support grid frame 44 away from the front bracket assembly 3, the air outlet efficiency of the cooling fan blade 5 is improved, and in combination with the wrapping effect of the fan blade ring 42, the load of the cooling fan blade 5 is reduced, and the wind wear of the motor is reduced, thereby improving the ventilation and heat dissipation effect of the motor while improving the efficiency of the motor. In order to further improve the heat dissipation performance and effect, carbon brush side holes 331, inclined side wall holes 332 and carbon brush ventilation bottom holes 333 are arranged around the carbon brush insertion slot 33, so that when the cooling fan blade 5 is working, the airflow is driven to pass through the carbon brush assembly 6 of the motor, and the heat generated between the carbon brush assembly 6 and the rotor is taken away. The inclined guide wall 411 is combined to guide the gas flow, and the front bottom hole 35 and the positive side wall hole 34 are used to provide air flow into the guide cavity 41, so that the airflow flows orderly from the front bracket assembly 3 to the rear bracket assembly 4, so as to be discharged through the support grid frame 44 after absorbing the heat in the motor.

[0044] The rotor assembly 1 of the motor completes the installation and fixation of the rotor winding 15 through the structural structure of the rotor slot paper 12, the rotor slot wedge 13 and the rotor core 113, thereby significantly improving the coordination efficiency of the stator assembly 2 and the rotor assembly 1 in coordination with the stator core 21. The rotor core 113 is further installed and fixed through the rotor end plate 14, so that the rotor assembly 1 has a high structural stability effect.

[0045] The "first", "second", "third", "fourth", etc. (if any) referred to in this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods or devices.

[0046] It should be noted that the descriptions involving "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0047] Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A motor, characterized in that: The invention comprises a front support assembly (3) and a rear support assembly (4) which match each other, and a rotor assembly (1) and a stator assembly (2) which are located between the front support assembly (3) and the rear support assembly (4) and match each other; the stator assembly (2) is sleeved on the rotor assembly (1), the two ends of the rotor assembly (1) are rotatably connected to the front support assembly (3) and the rear support assembly (4) respectively, and the end of the rotor assembly (1) connected to the rear support assembly (4) is provided with a cooling fan (5), and the cooling fan (5) is located on a side of the rear support assembly (4) away from the front support assembly (3); the front support assembly (3) and the rear support assembly (4) are respectively connected and fixed to the corresponding end of the stator assembly (2), and the front support assembly (3) and the rear support assembly (4) are both provided with through holes, and the through holes on the front support assembly (3) and the through holes on the rear support assembly (4) are both connected to the inner sides of the stator assembly (2) and the rotor assembly (1); A flow guiding cavity (41) is provided on a side of the rear support assembly (4) facing the front support assembly (3); Both ends of the rear side of the front bracket assembly (3) which are symmetrical to each other are provided with front fixing parts (32); The front bracket assembly (3) is provided with two symmetrically distributed carbon brush insertion slots (33), and the two carbon brush insertion slots (33) are respectively matched with the positions of the corresponding front fixing parts (32); The front side of the front bracket assembly (3) is provided with two carbon brush ventilation bottom holes (333) respectively matching the corresponding carbon brush plug-in slots (33); the four corners of the front bracket assembly (3) are chamfered, and inclined side wall holes (332) are provided on the chamfers; four carbon brush side holes (331) are provided on the outer peripheral side wall of the front bracket assembly (3), and every two of the carbon brush side holes (331) are symmetrically distributed at the two ends of the corresponding carbon brush plug-in slot (33); and the rear side of the rear bracket assembly (4) is provided with a fan blade ring body (42), and the cooling fan blade (5) is located in the fan blade ring body (42); the guide cavity (41) is provided with an inclined guide wall (411) on the side close to the fan blade ring body (42).

2. A motor according to claim 1, characterized in that: The rotor assembly (1) comprises a rotor shaft (11), the two ends of the rotor shaft (11) are rotatably connected to a shaft connection portion (31) and a support grid frame (44), the rotor shaft (11) is provided with a rotor core (113), and the rotor core (113) is provided with a rotor winding (15); the stator assembly (2) comprises a stator core (21), the stator core (21) is provided with a connecting slot (212) matching the rotor core (113), two stator slots (211) symmetrically distributed relative to the connecting slots (212), and two annular stator windings (24) symmetrically distributed relative to the connecting slots (212), and the two stator windings (24) respectively and simultaneously pass through corresponding ends of the two stator slots (211).

3. A motor according to claim 2, characterized in that: The stator slot (211) is W-shaped, and an opening is formed on one side of the two stator slots (211) facing each other, and the opening of the stator slot (211) is connected to the corresponding side of the connecting slot (212); a stator slot paper (23) is inserted into the stator slot (211), and the stator slot paper (23) comprises a W-shaped central abutment portion (231) that is in contact with the stator core (21) and two end abutment portions (232) that are symmetrically located at two ends of the central abutment portion (231), and the opening of the stator slot (211) is formed at the corresponding two end abutment portions. A winding through slot (233) for the stator winding (24) to pass through is formed between the end abutting portion (232) and the center abutting portion (231); stator end plates (22) are provided at both ends of the stator core (21) along the axial direction; the portion of the stator winding (24) passing through the stator core (21) is abutted and fixed to the stator end plate (22); the stator end plate (22) is square-shaped, and terminal sockets (221) are provided at the four corners of the stator end plate (22); and piercing terminals (25) are provided in the terminal sockets (221).

4. A motor according to claim 2, characterized in that: The rotor core (113) is provided with a plurality of slot paper grooves (1131) with equal arc distribution, the slot paper grooves (1131) are provided with V-shaped rotor slot paper (12), and the rotor winding (15) is wound in two adjacent rotor slot papers (12); the rotor core (113) is provided with a plurality of slot covers (1132) with equal arc distribution on the radial outer side, the two sides of the slot cover (1132) are respectively matched with the corresponding slot paper grooves (1131), and a gap (1133) with a width smaller than the width of one end of the slot paper groove (1131) away from the rotating shaft is formed between two adjacent slot covers (1132); a rotor slot wedge (13) is provided between two adjacent slot covers (1132), the width of the rotor slot wedge (13) is larger than the width of the gap (1133), and the rotor slot wedge (13) is located on the side of the slot cover (1132) facing the rotor rotating shaft (11).

5. A motor according to claim 4, characterized in that: The rotor shaft (11) comprises two end plate connection parts (112) and a steering connection part (111) respectively located at two ends of the rotor core (113) along the axis; the steering connection part (111) is connected to one end of the end plate connection part (112) away from the rotor core (113) and is provided with a commutator (17); the end plate connection part (112) is provided with a rotor end plate (14) abutting and fixed with the rotor core (113); and the other end plate connection part (112) is provided with a bearing (16) at one end away from the rotor core (113), and the bearing (16) is used to connect with the support grid frame (44).

6. A vacuum cleaner, characterized in that: Comprising a motor as claimed in any one of claims 1 to 5.

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