CN218771562U

CN218771562U - Brushless external rotation motor

Info

Publication number: CN218771562U
Application number: CN202223169838.2U
Authority: CN
Inventors: 李如兴; 张爱群
Original assignee: Jiangyin Aotelai Motor Co ltd
Current assignee: Jiangyin Aotelai Motor Co ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-03-28
Anticipated expiration: 2032-11-29

Abstract

The utility model discloses a brushless external rotation motor, a gap is arranged between a stator (1) and a rotor (2); rotor (2) contain casing (3), and casing (3) have casing hole (6), and 6 magnetic shoes (5) evenly set up in casing hole (6) and encircle stator (1) and set up, the both ends of casing (3) all are equipped with the end cover, all are equipped with louvre (7) with casing hole (6) intercommunication on two end covers, still all are equipped with fin (8) on two end covers, and fin (8) are equipped with a plurality of wind blade (9) on the surface evenly distributed of end cover, and still be equipped with homogeneous body shaping on two end covers (4), connect fixedly between front end cover (4.2) and rear end cover (4.1) through a plurality of screw rods (12). The utility model provides the radiating efficiency of motor has guaranteed the stability of motor performance, avoids the high machine that burns of motor temperature, need not additionally to add the fan, has promoted the packaging efficiency, the cost is reduced.

Description

Brushless external rotation motor

Technical Field

The utility model belongs to the motor field especially relates to a be applied to brushless abversion motor of treadmill.

Background

The brushless external rotor motor in the treadmill comprises an inner stator and an outer rotor, wherein the inner stator is arranged in a machine shell and is provided with a stator winding, the main body of the outer rotor surrounds the periphery of the inner stator and is provided with magnetic poles, the specific structure is shown in the attached figures 1 and 2, the brushless external rotor motor comprises a rotating shaft 1, the outer rotor connected with the rotating shaft 1 and the inner stator positioned between the rotating shaft and the outer rotor, the outer rotor comprises a machine shell 3 and a plurality of magnetic poles 4 uniformly distributed along the circumferential direction of the inner wall of the machine shell 3, and the inner stator comprises a plurality of tooth grooves 5 uniformly distributed along the circumferential direction; the number ratio of the tooth grooves 5 to the magnetic poles 4 is 12:10, the fan blade 2 is fixed on the front end cover 6 of the shell by screws.

However, the magnetic poles of the outer rotor are usually made of neodymium iron boron (ndfeb) material, and the ndfeb material needs expensive rare earth, so that the cost of the brushless outer rotor motor is higher than that of other motors. Meanwhile, in order to avoid overheating of the stator winding on the inner stator, the brushless outer rotor motor needs to be provided with an independent fan for radiating heat of the stator winding. Therefore, the size of the brushless outer rotor motor is increased, and the cost of the brushless outer rotor motor is further improved. Therefore, the cost is reduced while the performance of the brushless outer rotor motor is ensured, the problem to be solved is solved, the gap between the magnetic poles is 10, the front cover and the rear cover cannot penetrate through the screw rod for fixing, boss riveting points are arranged at two ends of the machine shell, notches are arranged on the front cover and the rear cover and are connected with the machine shell through the riveting parts respectively, and the process is complex.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a brushless abversion motor of low-cost high power.

The utility model discloses a realize through following technical scheme:

a brushless external rotation motor comprises a stator 1 positioned on the inner side and a rotor 2 positioned on the outer side, wherein a gap is formed between the stator 1 and the rotor 2, and two ends of the stator 1 respectively extend out of two ends of the rotor 2 through a connecting shaft 10 to be respectively connected to an external frame body; rotor 2 contains casing 3, and casing 3 has

casing hole

6, and 6 magnetic shoes 5 evenly set up in casing hole 6 and encircle stator 1 and set up, and two adjacent magnetic shoes 5 are close to the polarity of 1 one end of stator opposite, the both ends of casing 3 all are equipped with the end cover, and the end cover that is located the rear end is rear end cap 4.1, and the end cover that is located the front end is front end cap 4.2, all is equipped with louvre 7 with casing hole 6 intercommunication on two end caps, louvre 7 evenly distributed just runs through the end cover on the end cover, still all is equipped with fin 8 on two end caps, and fin 8 is in the surface evenly distributed of end cover, and still is equipped with a plurality of wind blade 9 on two end caps 4 with homogeneous body shaping ground, and the space between wind blade 9 forms the louvre on the end cover, between front end cap 4.2 and the rear end cap 4.1, connect fixedly through a plurality of screw rods 12, screw rod 12 passes in the middle of the clearance between magnetic shoe 5 and the magnetic shoe 5.

Preferably, the rear end cover 4.1 and the front end cover 4.2 are fixedly connected through 3 screws 12, 3 holes are uniformly distributed in the rear end cover, 3 threaded holes are uniformly distributed in the corresponding position of the front end cover, the screws 12 penetrate through the rear end cover 4.1, penetrate through the gap between the magnetic tile 5 and are locked with the front end cover 4.2.

Preferably, 5 wind blades 9 are arranged on the rear end cover 4.1, and the shape of the wind blades 9 is the same as that of the fan blades.

Preferably, the front end cover 4.2 is also fixedly connected with a belt pulley 11, so that the rotor 2 outputs driving force through the belt pulley. Preferably, the front end cap 4.2 is integrally formed with the pulley 11.

Preferably, the magnetic shoe 5 is made of ferrite material.

The utility model has the advantages that:

the utility model discloses a brushless external rotation motor, the structure is ingenious, in the motor work, when the rotor rotates, link end cover and stator rotation, the end cover rotates and links fin and wind blade rotation, make the air flow, the mobile air that is mixd by fin and wind blade takes away the stator and the rotor and rotates the produced heat relatively via the louvre, thereby promoted the radiating efficiency of motor, guaranteed the stability of motor performance, avoid motor temperature high fever machine, need not additionally to add the fan, 6 magnetic shoes set up can make between magnetic shoe and the magnetic shoe gapped, the screw rod can penetrate from the middle, this structure can avoid the complicated technology that the equipment needs the riveting, promoted the packaging efficiency, reduced the defective rate, therefore, the clothes hanger is strong in practicability, and is worth promoting; particularly, when the brushless outer rotor magnetic pole is made of neodymium iron boron materials instead of ferrite materials, 10 magnetic poles are changed into 6 magnetic poles, a shell is riveted with front and rear end covers and is changed into a screw rod penetrating through a rear cover, the front cover and an independent fan are changed into a mode that the front and rear end covers are integrally formed, the performance of the brushless outer rotor magnetic pole is guaranteed, the cost is reduced, the structure is optimized, the independent fan is used for radiating heat of a stator winding, the front and rear end cover magnetic pole is changed into a mode that front and rear end cover fan blades are integrally formed, the process is reduced, and the cost is reduced.

Drawings

For ease of illustration, the present invention is described in detail by the following specific examples and figures.

Fig. 1 is a schematic structural diagram of a brushless external rotor motor in the background art;

FIG. 2 is a schematic view of the internal structure of FIG. 1;

fig. 3 is a schematic perspective view of the present invention;

FIG. 4 is a schematic view of the disassembled structure of FIG. 3;

fig. 5 is a perspective view of the rear end cap.

Detailed Description

As shown in fig. 3 to 5, a brushless external rotation motor includes a stator 1 located at an inner side and a rotor 2 located at an outer side, a gap is formed between the stator 1 and the rotor 2, and both ends of the stator 1 respectively extend out of both ends of the rotor 2 through a connecting shaft 10 to be respectively connected to an external frame body; the rotor 2 contains the casing 3, and casing 3 has

casing hole

6, and 6 magnetic shoes 5 evenly set up in casing hole 6 and encircle stator 1 and set up, and two adjacent magnetic shoes 5 are close to the polarity of 1 one end of stator opposite, the both ends of casing 3 all are equipped with the end cover, and the end cover that is located the rear end is rear end cap 4.1, and the end cover that is located the front end is front end cap 4.2, all is equipped with the louvre 7 with casing hole 6 intercommunication on two end caps, louvre 7 evenly distributed and run through the end cover on the end cover, still all are equipped with fin 8 on two end caps, and fin 8 is at the surface evenly distributed of end cover, and still be equipped with a plurality of wind blade 9 on two end caps 4 with the homogeneous body shaping ground, and the space between wind blade 9 forms louvre 7 on the end cover, between front end cap 4.2 and the rear end cap 4.1, connect fixedly through a plurality of screw rods 12, screw rod 12 passes in the middle of the clearance between magnetic shoe 5 and the magnetic shoe 5.

Between rear end housing 4.1 and the front end housing 4.2, connect fixedly through 3 screw rods 12, the equipartition has 3 holes on the rear end housing, and the front end housing equipartition has 3 screw holes in corresponding position, screw rod 12 penetrates from rear end housing 4.1, passes in the middle of the clearance between magnetic shoe 5 and the magnetic shoe 5, locks with front end housing 4.2.

The rear end cover 4.1 is provided with 5 wind blades 9, and the shape of the wind blades 9 is the same as that of the fan blades.

The front end cover 4.2 is also fixedly connected with a belt pulley 11, so that the rotor 2 outputs driving force through the belt pulley. Preferably, the front end cap 4.2 is integrally formed with the pulley 11.

The magnetic shoe 5 is made of ferrite material.

The utility model discloses a brushless abversion motor, the structure is ingenious, in motor work, when rotor 2 rotates, even take end cover and stator 1 to rotate, the end cover rotates even fin 8 and wind blade 9 and rotates, make the air flow, the mobile air that is mixxed by fin 8 and wind blade 9 takes away stator 1 and rotor 2 and rotates produced heat relatively via louvre 7, the radiating efficiency of motor has been promoted from this, the stability of motor performance has been guaranteed, avoid motor temperature high fever machine, need not additionally to add the fan, 6 the setting up of magnetic shoe can make between magnetic shoe and the magnetic shoe gappedly, the screw rod can penetrate from the centre, this structure can avoid the equipment to need riveted complicated technology, the packaging efficiency is promoted, the defective rate is reduced, therefore, the clothes hanger is strong in practicability, and is worth promoting.

Particularly, the brushless outer rotor magnetic pole is made of neodymium iron boron materials instead of ferrite materials, 10 magnetic poles are changed into 6 magnetic poles, a shell is riveted with front and rear end covers and is changed into a screw rod penetrating through a rear cover, the front cover and an independent fan are changed into a mode that the front and rear end covers are integrally formed, the performance of the brushless outer rotor magnetic pole is guaranteed, the cost is reduced, the structure is optimized, the independent fan is used for radiating heat of a stator winding, the brushless outer rotor magnetic pole is changed into a mode that front and rear end cover fan blades are integrally formed, the process is reduced, and the cost is reduced.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. A brushless external rotation motor comprises a stator (1) positioned on the inner side and a rotor (2) positioned on the outer side, and is characterized in that a gap is reserved between the stator (1) and the rotor (2), and two ends of the stator (1) respectively extend out of two ends of the rotor (2) through a connecting shaft (10) to be respectively connected to an external frame body; rotor (2) contain casing (3), and casing (3) have casing hole (6), and 6 magnetic shoe (5) evenly set up in casing hole (6) and encircle stator (1) and set up, and two adjacent magnetic shoe (5) are close to the polarity opposite of stator (1) one end, the both ends of casing (3) all are equipped with the end cover, and the end cover that is located the rear end is rear end cap (4.1), and the end cover that is located the front end is front end housing (4.2), all is equipped with louvre (7) with casing hole (6) intercommunication on two end covers, louvre (7) evenly distributed and run through the end cover on the end cover still all are equipped with fin (8) on two end covers, and fin (8) are at the surface evenly distributed of end cover, still are equipped with a plurality of wind blade (9) with the homogeneous body shaping on two end covers (4), and the space between wind blade (9) forms louvre (7) on the end cover, connect fixedly through a plurality of screw rods (12) between front end housing hole (4.2) and rear end housing hole (4.1), screw rod (12) pass the middle clearance between magnetic shoe (5).

2. The brushless external rotor motor as claimed in claim 1, wherein said rear end cap (4.1) and said front end cap (4.2) are connected and fixed by 3 screws (12), said rear end cap has 3 holes, said front end cap has 3 screw holes at corresponding positions, said screws (12) penetrate from said rear end cap (4.1), penetrate from the middle of the gap between said magnetic shoe (5) and said magnetic shoe (5), and are locked with said front end cap (4.2).

3. A brushless external rotor electric machine according to claim 1, characterized in that 5 wind blades (9) are provided on the rear end cap (4.1), the shape of the wind blades (9) being the same as the wind blades.

4. A brushless external rotor motor according to claim 1, characterized in that the front end cap (4.2) is further fixedly connected to a pulley (11) for the rotor (2) to output a driving force through the pulley.

5. A brushless external rotor motor, according to claim 4, characterized in that said front cover (4.2) is integral with the pulley (11).

6. A brushless external rotor motor, according to claim 1, characterized in that said magnetic shoes (5) are made of ferrite material.