CN216774480U - Brushless motor with outer rotor - Google Patents
Brushless motor with outer rotor Download PDFInfo
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- CN216774480U CN216774480U CN202220444137.6U CN202220444137U CN216774480U CN 216774480 U CN216774480 U CN 216774480U CN 202220444137 U CN202220444137 U CN 202220444137U CN 216774480 U CN216774480 U CN 216774480U
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- outer rotor
- brushless motor
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- cover
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Abstract
The utility model discloses an outer rotor brushless motor which comprises an outer rotor, wherein a bottom cover is arranged at the bottom end of the outer rotor, a second bearing is arranged at the central position of the bottom cover, the bottom end of the second bearing extends to the outer part of the bottom cover, a top cover is arranged at the top end of the outer rotor, a first bearing is arranged at the central position of the top cover, the top end of the first bearing extends to the outer part of the top cover, a rotating shaft is arranged at the central position of the inner part of the outer rotor, the top end of the rotating shaft penetrates through the outer part of the first bearing, the bottom end of the rotating shaft penetrates through the outer part of the second bearing, an inner stator is arranged on the outer wall of the rotating shaft in the outer rotor, and a permanent magnet magnetic pole is arranged on the inner wall of the outer rotor at the outer side of the inner stator. The utility model not only prolongs the service life of the brushless motor, reduces serious noise pollution to the environment when the brushless motor is used, but also improves the convenience when the brushless motor is used.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to an outer rotor brushless motor.
Background
With the continuous development of motor technology, motors in the market at present can be mainly divided into an outer rotor motor and an inner rotor motor, and an outer rotor brushless motor has the excellent characteristics of small volume, high efficiency, simple structure, strong manufacturability and the like, and is further widely applied to fans and air conditioners.
The brushless motor on the market is not convenient for carry out high-efficient heat dissipation and handles now, leads to its long-time after using easy phenomenon because of high temperature produces the scaling loss, and then influences its life, puzzles people often.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an outer rotor brushless motor, which aims to solve the problem that the brushless motor in the background technology is inconvenient to carry out efficient heat dissipation treatment.
In order to achieve the purpose, the utility model provides the following technical scheme: the outer rotor brushless motor comprises an outer rotor, wherein a bottom cover is arranged at the bottom end of the outer rotor, a second bearing is arranged at the center of the bottom cover, the bottom end of the second bearing extends to the outside of the bottom cover, a top cover is installed at the top end of the outer rotor, a first bearing is arranged at the center of the top cover, the top end of the first bearing extends to the outside of the top cover, a rotating shaft is arranged at the center of the inside of the outer rotor, the top end of the rotating shaft penetrates through the outside of the first bearing, the bottom end of the rotating shaft penetrates through the outside of the second bearing, an inner stator is arranged on the outer wall of the rotating shaft of the inside of the outer rotor, a permanent magnet magnetic pole is arranged on the inner wall of the outer rotor outside the inner stator, and heat dissipation fins at equal intervals are arranged at the bottom end of the outside of the second bearing.
Preferably, a lower annular plate is arranged on the outer wall of one end, close to the top cover, of the outer rotor, and an upper annular plate is arranged on the outer wall of the top cover, so that the pin holes and the threaded holes can be conveniently arranged and processed.
Preferably, the baffle is down arranged in the bottom below the inner stator, the bottom of bottom is installed down and is inhaled the sound cotton to reduce brushless motor and cause noise pollution's phenomenon to the environment.
Preferably, an upper baffle is arranged inside the outer rotor above the inner stator, and the bottom end of the top cover is provided with sound absorbing cotton to reduce the noise pollution of the brushless motor to the environment.
Preferably, the top of lower annular plate is provided with equidistant screw hole, the last annular plate bottom of screw hole top all is provided with the pinhole, the top of pinhole extends to the outside of last annular plate to settle the processing to the locking bolt.
Preferably, a locking bolt is mounted at the top end of the upper annular plate at the pin hole, and the bottom end of the locking bolt penetrates through the pin hole and is in threaded connection with the threaded hole, so that the top cover can be detached from the top of the outer rotor.
Compared with the prior art, the utility model has the beneficial effects that: the outer rotor brushless motor not only prolongs the service life of the brushless motor, reduces serious noise pollution to the environment when the brushless motor is used, but also improves the convenience when the brushless motor is used;
(1) the heat dissipation fins are arranged at the bottom end of the bottom cover at equal intervals, so that the heat energy of the inner side of the outer rotor is absorbed and dissipated by the heat dissipation fins through the bottom cover, the purpose of efficient heat dissipation can be achieved, the burning loss phenomenon of the brushless motor due to high temperature can be reduced, and the service life of the brushless motor is prolonged;
(2) the upper baffle and the lower baffle are arranged at two ends of the inner stator, so that the noise generated in the friction process of the permanent magnet magnetic pole and the inner stator is primarily blocked, and the upper sound-absorbing cotton and the lower sound-absorbing cotton are respectively arranged at the top end of the top cover and the bottom of the bottom cover, so that the residual noise is absorbed and eliminated, and the serious noise pollution to the environment when the brushless motor is used is reduced;
(3) through rotatory locking bolt, make its inside that is located the pinhole rotate to make its lower extreme twist out to the outside of screw hole, upwards stimulate the upper annular plate afterwards, make the upper annular plate detach in the top of lower annular plate, can detach the top cap in the top of external rotor, and then can be convenient for overhaul maintenance treatment to this brushless motor, thereby improved the convenience when brushless motor uses.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;
FIG. 3 is a schematic top view of the present invention;
fig. 4 is a schematic bottom view of the present invention.
In the figure: 1. an outer rotor; 2. a permanent magnet pole; 3. an inner stator; 4. an upper baffle plate; 5. sound absorption cotton is arranged; 6. a top cover; 7. a first bearing; 8. a rotating shaft; 9. a lower baffle plate; 10. lower sound-absorbing cotton; 11. a heat dissipating fin; 12. a second bearing; 13. a bottom cover; 14. a lower annular plate; 15. an upper annular plate; 16. a pin hole; 17. locking the bolt; 18. a threaded bore.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, an embodiment of the present invention is shown: an outer rotor brushless motor comprises an outer rotor 1, wherein a lower annular plate 14 is arranged on the outer wall of one end, close to a top cover 6, of the outer rotor 1, and an upper annular plate 15 is arranged on the outer wall of the top cover 6;
when in use, the upper annular plate 15 and the lower annular plate 14 are respectively arranged on the outer walls of the top cover 6 and the outer rotor 1 so as to arrange the pin holes 16 and the threaded holes 18;
the top of the lower annular plate 14 is provided with threaded holes 18 at equal intervals, the bottom of the upper annular plate 15 above the threaded holes 18 is provided with pin holes 16, and the top ends of the pin holes 16 extend to the outside of the upper annular plate 15;
in use, the pin holes 16 and the threaded holes 18 are respectively arranged inside the upper annular plate 15 and on the top of the lower annular plate 14, so that the locking bolts 17 can be arranged;
a locking bolt 17 is arranged at the top end of the upper annular plate 15 at the pin hole 16, and the bottom end of the locking bolt 17 penetrates through the pin hole 16 and is in threaded connection with the threaded hole 18;
when in use, the locking bolt 17 is rotated to enable the lower end of the locking bolt to be screwed out of the threaded hole 18, so that the top cover 6 is detached from the top of the outer rotor 1;
a bottom cover 13 is arranged at the bottom end of the outer rotor 1, a second bearing 12 is arranged at the central position of the bottom cover 13, the bottom end of the second bearing 12 extends to the outside of the bottom cover 13, a top cover 6 is installed at the top end of the outer rotor 1, a first bearing 7 is arranged at the central position of the top cover 6, the top end of the first bearing 7 extends to the outside of the top cover 6, a rotating shaft 8 is arranged at the central position of the inside of the outer rotor 1, the top end of the rotating shaft 8 penetrates through the outside of the first bearing 7, the bottom end of the rotating shaft 8 penetrates through the outside of the second bearing 12, an inner stator 3 is arranged on the outer wall of the rotating shaft 8 inside the outer rotor 1, a lower baffle 9 is arranged inside the bottom cover 13 below the inner stator 3, and a lower sound absorption cotton 10 is installed at the bottom of the bottom cover 13;
when the brushless motor is used, noise generated by friction between the inner stator 3 and the permanent magnet magnetic pole 2 is blocked by the lower baffle 9, and residual noise is absorbed and eliminated by the lower sound absorption cotton 10, so that the phenomenon of noise pollution of the brushless motor to the environment is reduced;
an upper baffle 4 is arranged in the outer rotor 1 above the inner stator 3, and an upper sound-absorbing cotton 5 is arranged at the bottom end of the top cover 6;
when the brushless motor is used, noise generated by friction between the inner stator 3 and the permanent magnet magnetic pole 2 is blocked by the upper baffle 4, and residual noise is absorbed and eliminated by the upper sound-absorbing cotton 5, so that the phenomenon of noise pollution of the brushless motor to the environment is reduced;
the inner wall of the outer rotor 1 outside the inner stator 3 is provided with a permanent magnet magnetic pole 2, and the bottom end of the bottom cover 13 outside the second bearing 12 is provided with radiating fins 11 at equal intervals.
When the brushless motor is used, firstly, the first bearing 7 and the second bearing 12 are lower than the rotating shaft 8 for limiting treatment to reduce the phenomenon of deviation generated in the rotating process of the rotating shaft 8, then, the upper baffle plate 4 and the lower baffle plate 9 are used for preliminarily blocking the noise generated in the friction process of the permanent magnet magnetic pole 2 and the inner stator 3, then, the upper sound-absorbing cotton 5 and the lower sound-absorbing cotton 10 are used for absorbing and eliminating the residual noise, so that the noise pollution to the environment in the operation process of the brushless motor can be reduced, then, the heat energy on the inner side of the outer rotor 1 is absorbed and dissipated through the bottom cover 13 by the radiating fins 11, the purpose of efficient heat dissipation can be achieved, the burning loss phenomenon caused by high temperature after the brushless motor is used for a long time can be reduced, finally, the brushless motor is rotated by rotating the locking bolt 17 to be positioned in the pin hole 16, and the lower end of the brushless motor is screwed out of the threaded hole 18, and then the top cover 6 is pulled upwards, so that the upper annular plate 15 is detached above the lower annular plate 14, that is, the top cover 6 can be detached from the top of the outer rotor 1, and the brushless motor is subjected to maintenance treatment, thereby completing the use of the brushless motor.
Claims (6)
1. The outer rotor brushless motor is characterized by comprising an outer rotor (1), wherein a bottom cover (13) is arranged at the bottom end of the outer rotor (1), a second bearing (12) is arranged at the central position of the bottom cover (13), the bottom end of the second bearing (12) extends to the outside of the bottom cover (13), a top cover (6) is installed at the top end of the outer rotor (1), a first bearing (7) is arranged at the central position of the top cover (6), the top end of the first bearing (7) extends to the outside of the top cover (6), a rotating shaft (8) is arranged at the central position inside the outer rotor (1), the top end of the rotating shaft (8) penetrates through the outside of the first bearing (7), the bottom end of the rotating shaft (8) penetrates through the outside of the second bearing (12), and an inner stator (3) is arranged on the outer wall of the rotating shaft (8) inside the outer rotor (1), the inner wall of the outer rotor (1) on the outer side of the inner stator (3) is provided with a permanent magnet magnetic pole (2), and the bottom end of the bottom cover (13) on the outer side of the second bearing (12) is provided with heat radiating fins (11) at equal intervals.
2. The external rotor brushless motor of claim 1, wherein: the outer wall of one end, close to the top cover (6), of the outer rotor (1) is provided with a lower annular plate (14), and the outer wall of the top cover (6) is provided with an upper annular plate (15).
3. The external rotor brushless motor of claim 1, wherein: the sound absorbing structure is characterized in that a lower baffle (9) is arranged inside a bottom cover (13) below the inner stator (3), and lower sound absorbing cotton (10) is installed at the bottom of the bottom cover (13).
4. The external rotor brushless motor of claim 1, wherein: an upper baffle (4) is arranged inside the outer rotor (1) above the inner stator (3), and the bottom end of the top cover (6) is provided with an upper sound-absorbing cotton (5).
5. The external rotor brushless motor of claim 2, wherein: the top of lower annular plate (14) is provided with equidistant screw hole (18), upper annular plate (15) bottom above screw hole (18) all is provided with pinhole (16), the top of pinhole (16) extends to the outside of last annular plate (15).
6. The external rotor brushless motor of claim 5, wherein: and a locking bolt (17) is installed at the top end of the upper annular plate (15) at the position of the pin hole (16), and the bottom end of the locking bolt (17) penetrates through the pin hole (16) and is in threaded connection with the threaded hole (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220444137.6U CN216774480U (en) | 2022-03-01 | 2022-03-01 | Brushless motor with outer rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220444137.6U CN216774480U (en) | 2022-03-01 | 2022-03-01 | Brushless motor with outer rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216774480U true CN216774480U (en) | 2022-06-17 |
Family
ID=81959189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220444137.6U Active CN216774480U (en) | 2022-03-01 | 2022-03-01 | Brushless motor with outer rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216774480U (en) |
-
2022
- 2022-03-01 CN CN202220444137.6U patent/CN216774480U/en active Active
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