CN219833888U

CN219833888U - DC brushless motor

Info

Publication number: CN219833888U
Application number: CN202321048420.8U
Authority: CN
Inventors: 姜绍海; 国恩杰; 张振伟; 张兴伟
Original assignee: Qingdao Weiyida Motor Co ltd
Current assignee: Qingdao Weiyida Motor Co ltd
Priority date: 2023-05-05
Filing date: 2023-05-05
Publication date: 2023-10-13
Anticipated expiration: 2033-05-05

Abstract

The utility model relates to the technical field of motors and discloses a direct current brushless motor, which comprises a shell, wherein a vent hole is formed in the outer wall of the shell, a right outer cover is arranged on the outer wall of one side of the shell, a round hole I is formed in the outer wall of the right outer cover, a belt pulley is arranged on the outer edge of the right outer cover, an end cover is arranged on the outer edge of the other side of the shell, a bolt is arranged on the inner wall of the end cover, a bearing chamber is arranged in the center of the right outer cover, a bearing chamber outer wall is fixedly assembled on the outer wall of one side, far away from the belt pulley, of the right outer cover, a fin is fixedly assembled on the outer edge of the bearing chamber outer wall, and a threaded pore plate is arranged on the outer wall of one side, far away from the belt pulley, of the fin. The air vent and the fins are positioned on the same plane, so that when the equipment runs, the fins can conduct air introduction through the air vent, the fan heat efficiency of the fins to the equipment is further increased, and meanwhile, the centrifugal fan structure is adopted, so that the ventilation efficiency is higher than that of the axial flow fan.

Description

DC brushless motor

Technical Field

The utility model relates to the technical field of motors, in particular to a direct current brushless motor.

Background

The brushless DC motor is composed of a motor main body and a driver, and is a typical electromechanical integrated product. Because the brushless DC motor operates in a self-control mode, a starting winding is not additionally arranged on a stator like a synchronous motor which is started under heavy load under variable frequency speed regulation, and oscillation and step-out can not be generated when the load is suddenly changed. The permanent magnet of the brushless DC motor with small and medium capacity is mostly made of rare earth NdFeB (Nd-Fe-B) materials with high magnetic energy level. Therefore, the volume of the rare earth permanent magnet brushless motor is reduced by one base number compared with that of a three-phase asynchronous motor with the same capacity.

The existing motor can refer to Chinese patent with the issued publication number of CN209200822U, and discloses an improved external rotation motor which comprises a stator and a stator rotationally sleeved outside the stator, wherein two ends of the stator respectively protrude out of two ends of the stator to be connected with an external frame body; the stator comprises a cylinder body, an end cover and a plurality of magnets, wherein the cylinder body is provided with a containing cavity for containing the stator, the plurality of magnets are respectively arranged on the cylinder body and protrude into the containing cavity, the plurality of magnets are arranged around the stator, and the polarities of any two adjacent magnets close to one end of the stator are opposite; the end cover is arranged on the cylinder body and covers the opening of the accommodating cavity, the end cover is rotatably arranged on the stator, the end cover is provided with a radiating hole penetrating through the end cover and communicated with the accommodating cavity, the end cover is provided with fins, the fins are arranged in a protruding mode from the outer surface of the end cover, when in actual use, the stator rotates together with the end cover and the stator, the end cover rotates together with the fins, the air is stirred when the end cover rotates, the air is stirred to flow when the fins rotate, the flowing air stirred by the fins is utilized to take away heat generated by the relative rotation of the stator and the stator through the radiating hole, the radiating efficiency of the motor is improved, the stability of the service performance of the motor is ensured, and meanwhile, burning of the motor due to overhigh temperature is avoided; in addition, a special cooling fan is not required to be arranged for the motor, so that the structure of the motor is simplified, and the manufacturing cost of the motor is reduced. ".

Above-mentioned equipment adopts axial fan's mode to dispel the heat, and this radiating efficiency is lower for equipment when high-speed operation, and serious problem generates heat can appear in its equipment, and the fin setting of this equipment is outside the casing simultaneously, has the potential safety hazard, and this equipment is trompil on the end cover simultaneously, and the mould construction is complicated, and processing is inconvenient.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a direct current brushless motor which has the advantages of strong practicability, good stability and solves the problems proposed by the background art.

The utility model provides the following technical scheme: the utility model provides a brushless DC motor, includes the shell, the ventilation hole has been seted up to the outer wall of shell, one side outer wall of shell is provided with the right side enclosing cover, round hole one has been seted up to the outer wall of right side enclosing cover, the belt pulley has been seted up along the outer edge of right side enclosing cover, the opposite side outer edge of shell is provided with the end cover, the inner wall of end cover is provided with the bolt, the center department of right side enclosing cover has seted up the bearing room, one side outer wall fixed assembly that the belt pulley was kept away from to the right side enclosing cover has the bearing room outer wall, the outer edge fixed assembly of bearing room outer wall has the fin, the fin is kept away from one side outer wall of belt pulley and has been seted up threaded hole, one side outer wall that the fin kept away from the belt pulley is provided with auxiliary cover plate, round hole two and round hole three have been seted up to auxiliary cover plate's outer wall, the inner wall of auxiliary cover plate is provided with the round hole five, the inner wall of bearing room is provided with the bearing, the inner wall cup joints the fixed axle, the both ends outer edge of fixed axle has all seted up the axle box, the outer edge of axle box has cup jointed the axle sleeve, the outer edge of axle sleeve has been seted up along the fixed axle sleeve, one side of annular ring edge of annular groove has the outer edge of annular groove, the outer edge of annular groove has the stator, two sets up the outer edge of annular groove, one side of annular groove has the stator, one side of annular groove has a stator, and one side of annular groove has one side of annular groove.

As a preferable technical scheme of the utility model, the shell, the right outer cover and the belt pulley are fixedly assembled through bolts, and the ventilation holes and the fins are positioned on the same plane.

As the preferable technical scheme of the utility model, the magnet is fixedly assembled with the inner wall of the shell, the magnet and the stator are positioned on the same plane, copper wires are wound on the outer edges of the first insulating sleeve, the stator and the second insulating sleeve, two ends of the copper wires are electrically connected with the circuit board, the guide holes penetrate through the wire holes, and the inner cavity of the wire holes is provided with a wire which is electrically connected with the circuit board.

As a preferable technical scheme of the utility model: the number of the fins is a plurality of, and the fins are arranged on the outer wall of the bearing chamber in a surrounding mode.

As a preferable technical scheme of the utility model: the auxiliary cover plate is arranged between the belt pulley and the magnet, and the outer wall of the bearing chamber is arranged at one side of the belt pulley, which is close to the magnet.

As a preferable technical scheme of the utility model: the auxiliary cover plate is attached to the outer wall of one side, far away from the belt pulley, of the fin, the auxiliary cover plate and the fin are fixed to the round hole III and the threaded hole through the bolt I, and the width of the outer wall of the bearing chamber is one half of the width of the fin.

As a preferable technical scheme of the utility model: the first bearing is positioned in the inner cavity of the first bearing chamber, and the auxiliary cover plate is positioned at the outer edge of one side of the first bearing, which is far away from the belt pulley, and is not contacted with each other.

Compared with the prior art, the utility model has the following beneficial effects:

1. this brushless DC motor is located the coplanar through ventilation hole and fin, makes equipment when the operation, and its fin accessible ventilation hole carries out the import of air, and then makes the fin to the fan thermal efficiency increase of equipment, and through adopting centrifugal fan structure, ventilation efficiency is higher than axial fan simultaneously.

2. This brushless DC motor, through setting up the fin in the shell the inside, there is not the potential safety hazard, and the hand is stretched into, can prevent to electrocute, simultaneously with through having seted up the ventilation hole on the shell, make equipment when production, its production mould preparation is simple, and processing is convenient.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic view of the expanded structure of the present utility model;

FIG. 3 is a schematic view of a stator structure according to the present utility model;

fig. 4 is a schematic diagram of a circuit board structure according to the present utility model.

In the figure: 1. a housing; 2. a vent hole; 3. a right outer cover; 4. a round hole I; 5. a belt pulley; 6. the outer wall of the bearing chamber; 7. a fin; 8. a threaded hole; 9. an auxiliary cover plate; 10. a round hole II; 11. a round hole III; 12. a first bolt; 13. a first bearing chamber; 14. a round hole V; 15. a first bearing; 16. a fixed shaft; 17. a shaft groove; 18. a shaft sleeve; 19. a stator; 20. an insulating sleeve I; 21. an insulation sleeve II; 22. a magnet; 23. knurling; 24. a guide hole; 25. a wire hole; 26. a Hall chip I; 27. a circuit board; 28. a round groove II; 29. a Hall chip II; 30. a second bolt; 31. an end cap.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, a brushless dc motor includes a housing 1, a vent hole 2 is provided on an outer wall of the housing 1, a right outer cover 3 is provided on an outer wall of one side of the housing 1, a round hole 4 is provided on an outer wall of the right outer cover 3, a belt pulley 5 is provided on an outer edge of the right outer cover 3, an end cover 31 is provided on an outer edge of the other side of the housing 1, a bolt 30 is provided on an inner wall of the end cover 31, a bearing chamber 13 is provided on a center of the right outer cover 3, a bearing chamber outer wall 6 is fixedly mounted on an outer wall of one side of the right outer cover 3 far from the belt pulley 5, a fin 7 is fixedly mounted on an outer edge of the bearing chamber outer wall 6, a threaded hole 8 is provided on an outer wall of one side of the fin 7 far from the belt pulley 5, an auxiliary cover 9 is provided on an outer wall of the auxiliary cover 9, a round hole 10 and a round hole three 11 are provided on an inner wall of the round hole three 11, a bolt 12 is provided on an inner wall of the round hole three 11, the outer wall of the auxiliary cover plate 9 is provided with a round hole five 14, the inner wall of the bearing chamber one 13 is provided with a bearing one 15, the inner wall of the bearing one 15 is sleeved with a fixed shaft 16, the outer edges of the two ends of the fixed shaft 16 are provided with shaft grooves 17, the outer edges of the shaft grooves 17 are sleeved with shaft sleeves 18, the outer edges of the fixed shaft 16 are provided with knurls 23, the outer edges of the knurls 23, which are far away from the shaft sleeves 18, are provided with guide holes 24, the outer edges of the side of the fixed shaft 16, which are far away from the shaft sleeves 18, are provided with wire holes 25, the outer edges of the knurls 23 are fixedly sleeved with stators 19, the outer edges of the stators 19 are provided with magnets 22, one side of the stators 19, which are close to the shaft sleeves 18, is fixedly provided with an insulating sleeve one 20, one side of the stators 19, which is far away from the shaft sleeves 18, is fixedly provided with an insulating sleeve two 21, the outer edges of the insulating sleeve two 21, which are far away from the fixed shaft 16, are provided with a circuit board 27, the outer edges of the circuit board 27 are provided with a circular groove two 28, the side of the circuit board 27, which is close to the second insulating sleeve 21, is electrically connected with a second Hall chip 29 and a first Hall chip 26.

Referring to fig. 1, the housing 1, the right outer cover 3 and the pulley 5 are fixedly assembled by a second bolt 30, and the ventilation hole 2 and the fin 7 are located on the same plane.

It should be noted that, the casing 1, the right outer cover 3 and the belt pulley 5 are fixed by the second bolt 30, so that the convenience of disassembling and assembling the main body of the device is increased, and the fin 7 and the vent hole 2 are positioned on the same plane, so that the fin 7 can conduct air introduction through the vent hole 2 when the device is operated, and further the fan heat efficiency of the fin 7 to the device is increased.

Referring to fig. 3, the number of bearings one 15 is two, and the fixed shaft 16 is rotatably sleeved with the right outer cover 3 and the end cover 31 through the bearings one 15.

The first bearing 15 reduces friction between the fixed shaft 16 and the right outer cover 3 and the end cover 31, and thus allows higher rotation of the apparatus.

Referring to fig. 1, a magnet 22 is fixedly assembled with an inner wall of a housing 1, the magnet 22 and a stator 19 are located on the same plane, copper wires are wound around the outer edges of a first insulating sleeve 20, the stator 19 and a second insulating sleeve 21, two ends of the copper wires are electrically connected with a circuit board 27, a guide hole 24 penetrates through a wire hole 25, a wire is arranged in an inner cavity of the wire hole 25, and the wire is electrically connected with the circuit board 27.

By the structure, after the device wire is connected with a power supply, the device can rotate.

Referring to fig. 4, the auxiliary cover plate 9 and the fins 7 are fixedly assembled with the threaded holes 8 through bolts one 12, and bolts two 30 penetrate through holes two 10.

It should be noted that, the auxiliary cover plate 9 and the fins 7 are fixedly assembled with the threaded holes 8 through the first bolts 12, so that the convenience of replacing the auxiliary cover plate 9 is increased, and the second bolts 30 penetrate through the second round holes 10, so that the stability of the auxiliary cover plate 9 is further increased.

Referring to fig. 2, the number of the fins 7 is several, and the fins 7 are circumferentially disposed on the outer wall of the bearing chamber outer wall 6.

It should be noted that, the fan blades are formed by the fins 7 and the outer wall 6 of the bearing chamber, so that the housing 1 can drive the fan blades to realize heat dissipation when the equipment runs.

Referring to fig. 2, the auxiliary cover 9 is disposed between the pulley 5 and the magnet 22, and the bearing housing outer wall 6 is disposed on one side of the pulley 5 near the magnet 22.

The auxiliary cover 9 and the pulley 5 provide half-sealing on both sides of the fin 7.

Referring to fig. 2, the auxiliary cover plate 9 is attached to the outer wall of the side, far away from the pulley 5, of the fin 7, and the auxiliary cover plate 9 and the fin 7 are fixed to the third round hole 11 and the threaded hole 8 through the first bolt 12, and the width of the outer wall 6 of the bearing chamber is half that of the fin 7.

By means of the structure, when the equipment is operated and the fan blade is driven by the shell 1 to realize heat dissipation, air can flow between the fins 7 through the round holes five 14 and then is discharged through the vent holes 2, so that air circulation is realized.

Referring to fig. 2, the first bearing 15 is located in the inner cavity of the first bearing chamber 13, and the auxiliary cover 9 is located at the outer edge of the first bearing 15 away from the pulley 5 and is not in contact with each other.

According to the working principle, copper wires are wound on the outer edges of the first insulating sleeve 20, the stator 19 and the second insulating sleeve 21, two ends of each copper wire are electrically connected with the circuit board 27, the guide holes 24 penetrate through the wire holes 25, the inner cavities of the wire holes 25 are provided with conducting wires, the conducting wires are electrically connected with the circuit board 27, after the equipment conducting wires are powered on, the fixed shafts 16 are fixed through the shaft sleeves 18, the shell 1 can rotate, the right outer cover 3 is driven through the shell 1, the bearing chamber outer wall 6 drives the threaded holes 8, the fins 7 can conduct air introduction through the ventilation holes 2, and therefore the heat efficiency of the fins 7 on the equipment is increased.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A brushless dc motor comprising a housing (1), characterized in that: the utility model discloses a novel bearing, including shell (1) and bearing housing, ventilation hole (2) have been seted up to the outer wall of shell (1), one side outer wall of shell (1) is provided with right side enclosing cover (3), round hole one (4) have been seted up to the outer wall of right side enclosing cover (3), belt pulley (5) have been seted up along the outer edge of right side enclosing cover (3), the opposite side outer edge of shell (1) is provided with end cover (31), the inner wall of end cover (31) is provided with bolt two (30), bearing housing one (13) have been seted up in the center department of right side enclosing cover (3), one side outer wall fixed assembly that one side enclosing cover (3) kept away from belt pulley (5) is equipped with bearing housing outer wall (6), the outer edge fixed assembly of bearing housing outer wall (6) has fin (7), one side outer wall that one side enclosing pulley (7) kept away from belt pulley (5) has been seted up threaded hole (8), one side outer wall that one side enclosing plate (7) kept away from belt pulley (5) is provided with auxiliary cover (9), round hole two (10) and round hole three (11) have been seted up to the outer wall of auxiliary cover (9), inner wall of one side enclosing cover (11) is provided with bearing housing one (12), one bearing housing one (15) has been set up the five bearing housing (15), the inner wall of bearing one (15) has cup jointed fixed axle (16), all seted up axial groove (17) along the both ends outer edge of fixed axle (16), the outer edge of axial groove (17) has cup jointed axle sleeve (18), knurl (23) have been seted up along the outer edge of fixed axle (16), knurl (23) are kept away from one side outer wall of axle sleeve (18) and have been seted up guide hole (24), the outer edge of one side outer edge of axle sleeve (18) is kept away from to fixed axle (16) has seted up linear hole (25), the outer edge of knurl (23) has fixedly cup jointed stator (19), the outer edge of stator (19) is provided with magnet (22), one side that stator (19) is close to axle sleeve (18) is fixed to be equipped with insulating sleeve one (20), one side that stator (19) are kept away from axle sleeve (18) is fixed to be equipped with insulating sleeve two (21), one side outer wall that insulating sleeve two (21) are kept away from fixed axle sleeve (16) is provided with circuit board (27), circular slot two (28) have been seted up along the outer edge of circuit board (27), one side that circuit board (27) is close to hall chip one side (26) is connected with hall chip (29).

2. A brushless dc motor as claimed in claim 1, wherein: the shell (1), the right outer cover (3) and the belt pulley (5) are fixedly assembled through a second bolt (30), and the vent hole (2) and the fins (7) are located on the same plane.

3. A brushless dc motor as claimed in claim 1, wherein: magnet (22) and the inner wall fixed assembly of shell (1), and magnet (22) are located the coplanar with stator (19), the outer edge winding of insulating cover one (20), stator (19) and insulating cover two (21) has the copper wire, and the both ends and the circuit board (27) electricity of copper wire are connected, guide hole (24) run through with line hole (25), the inner chamber of line hole (25) is provided with the wire, and the wire is connected with circuit board (27) electricity.

4. A brushless dc motor as claimed in claim 1, wherein: the number of the fins (7) is a plurality of, and the fins (7) are arranged on the outer wall of the bearing chamber (6) in a surrounding mode.

5. A brushless dc motor as claimed in claim 1, wherein: the auxiliary cover plate (9) is arranged between the belt pulley (5) and the magnet (22), and the bearing chamber outer wall (6) is arranged on one side, close to the magnet (22), of the belt pulley (5).

6. A brushless dc motor as claimed in claim 1, wherein: the auxiliary cover plate (9) is attached to the outer wall of one side, far away from the belt pulley (5), of the fin (7), the auxiliary cover plate (9) and the fin (7) are fixed to the round hole III (11) and the threaded hole (8) through the bolt I (12), and the width of the outer wall (6) of the bearing chamber is one half of the width of the fin (7).

7. A brushless dc motor as claimed in claim 1, wherein: the first bearing (15) is positioned in the inner cavity of the first bearing chamber (13), and the auxiliary cover plate (9) is positioned at the outer edge of one side of the first bearing (15) far away from the belt pulley (5) and is not contacted with each other.