TW201630312A - External rotor motor - Google Patents

Abstract

An external rotor motor comprising an isolation cover, a stator, a rotor and a bearing set is disclosed. The isolation cover is made of insulating material. Besides, the isolation cover includes a first cover and a second cover. The stator includes a core and a base mounted between the core and the second cover. The rotor includes a shaft, a permanent magnetic set and a hub. The shaft is rotatably coupled to the core. The hub and the core are mounted between the first and second covers. The permanent magnetic set couples with an inner wall of the hub, and the permanent magnetic set is located between the core and the hub. Furthermore, the permanent magnetic set includes a shaft tube and at least one bearing. The shaft tube couples with the base. The at least one bearing is mounted inside the shaft tube, and the shaft couples with the at least one bearing. By such arrangement, the isolation cover can prolong service life of the external rotor motor.

Description

Outer rotor motor

The present invention relates to an outer rotor motor, and more particularly to an outer rotor motor having a cage.

Referring to FIG. 1, another conventional outer rotor motor 9 is disclosed. The outer rotor motor 9 includes a stator 91, a rotor 92 and a base 93. The stator 91 can be directly or indirectly coupled to the base 93. The rotor 92 includes a rotating shaft 921 and a hub 922. The rotating shaft 921 is rotatably coupled to the center of the stator 91. The hub 922 is coupled to the rotating shaft 921. Thereby, the hub 922 can incorporate a permanent magnet group 923 formed between the stator 91 and the hub 922. An air gap is formed between the permanent magnet group 923 and the stator 91, so that the stator 91 can drive the rotor 92 to rotate relative to each other.

However, during use of the conventional outer rotor motor 9, the stator 91 and the base 93 are held in a fixed position, and the rotor 92 must be continuously rotated, so that in addition to the permanent magnet group 923 and the stator 91 will remain Outside the air gap, the hub 922 is also spaced from the base 93. Accordingly, moisture or foreign matter may intrude into the outer rotor motor 9 via the gap between the rotor 92 and the stator 91 or the base 93, and the internal components of the outer rotor motor 9 may be easily oxidized or damaged, thereby reducing the outer rotor motor. 9 lifetime.

In view of the above, since the member such as the stator 91 inside the outer rotor motor 9 cannot be isolated from the outside, and the internal member is easily oxidized or damaged by moisture, the conventional outer rotor motor 9 has a problem of short service life, and is indeed further improved. Necessary.

The invention provides an outer rotor motor, which can completely cover the stator by a two-piece isolation cover to ensure that the stator is isolated from the outside, so that moisture or foreign matter can be effectively blocked, so as to provide an external component of the outer rotor motor. Moisture-proof or dust-proof effect.

An embodiment of the outer rotor motor of the present invention comprises a spacer, a stator, a rotor and a bearing set. The isolation cover is made of an insulating material, and the isolation cover comprises a first cover and a second cover. The stator includes an iron core and a base disposed between the iron core and the second cover. The rotor includes a rotating shaft, a permanent magnet and a hub, the rotating shaft is rotatably coupled to the iron core, the hub and the iron core are disposed between the first cover body and the second cover body, the wheel hub is coupled to The outer circumference of the rotating shaft is coupled to an inner wall of the hub, and the permanent magnet group is formed between the iron core and the hub. The bearing set includes a shaft tube and at least one bearing, the shaft tube is disposed on the base, the at least one bearing is coupled to the inside of the shaft tube, and the rotating shaft of the rotor is coupled to at least one bearing of the bearing set. In addition, the iron core of the stator may be coupled to the outer circumference of the shaft tube.

In the outer rotor motor as described above, the base isolates a circuit receiving portion inside the spacer, and the circuit receiving portion is formed between the base and the second cover.

The rotor motor is configured as described above, wherein the circuit receiving portion is configured to set a driving circuit board, an electric control module or a power conversion unit of the motor.

An outer rotor motor as described above, wherein the second cover is detachably coupled to the first cover.

An outer rotor motor as described above, wherein the base extends in a radial direction of the outer rotor motor between the first cover body and the second cover body to cause the first cover body and the second cover body The base is fixedly held together.

An outer rotor motor as described above, wherein the base is provided with an extension extending toward the first cover or the second cover in an axial direction of the outer rotor motor.

Another embodiment of the outer rotor motor of the present invention also includes a spacer, a stator, and a turn Child and a bearing set. The isolation cover is made of an insulating material, and the isolation cover comprises a first cover and a second cover. The stator includes an iron core. The rotor includes a rotating shaft, a permanent magnet and a hub, the rotating shaft is rotatably coupled to the iron core, the hub and the iron core are disposed between the first cover body and the second cover body, the wheel hub is coupled to The outer circumference of the rotating shaft is coupled to an inner wall of the hub, and the permanent magnet group is formed between the iron core and the hub. The bearing set includes a shaft tube and at least one bearing disposed on the second cover. The at least one bearing is coupled to the inside of the shaft tube, and the rotating shaft of the rotor is coupled to at least one bearing of the bearing set. In addition, the iron core of the stator may be coupled to the outer circumference of the shaft tube.

An outer rotor motor as described above, wherein the shaft tube is coupled to a plug cover adjacent one end of the second cover.

In the rotor motor of the embodiment of the present invention, the first cover and the second cover respectively comprise a substrate portion, and each of the substrate portions extends along a radial direction of the outer rotor motor. Further, when the shaft tube is disposed in the second cover, the shaft tube may be disposed on the substrate portion of the second cover.

The outer rotor motor, wherein the base portion of the first cover is connected to a circumferential wall, and the circumferential wall of the first cover extends toward the second cover along an axial direction of the motor; or The substrate portion of the second cover is connected to a circumferential wall, and the circumferential wall of the second cover extends toward the first cover along an axial direction of the motor.

The outer rotor motor as described above, wherein the substrate portion of the first cover is provided with the circumferential wall, and the second cover forms a plate-shaped cover; or the substrate portion of the second cover is provided with the ring In the peripheral wall, the first cover forms a plate-shaped cover; or the base portion of the first cover and the base portion of the second cover are provided with the circumferential wall.

An outer rotor motor according to various embodiments of the present invention, further comprising a metal shell, the spacer being received inside the metal shell.

The rotor motor as described above, wherein the metal shell comprises a first housing and a first housing for covering the first cover and the second cover of the spacer, the first housing forming an open end at the position of the second cover, and the first housing The second housing is detachably coupled to the first housing for closing the open end of the first housing; or the metal housing includes a first housing and a second housing, the second housing a first cover body and a second cover body for covering the isolation cover, the second housing forms an open end at the position of the first cover body, and the first housing is detachably coupled to the first cover a second housing for closing the open end of the second housing.

The outer rotor motor, wherein the first housing and the second housing respectively form a hollow cover, and the open end of the first housing is opposite to the open end of the second housing The first housing and the second housing are coupled to each other to jointly cover the first cover and the second cover of the isolation cover.

The outer rotor motor as described above, wherein the metal casing comprises a first casing and a second casing, the first casing being a hollow cylinder having opposite ends at two ends, the first casing covering the isolation The first cover and the second cover of the cover are combined, and the two end openings of the first housing are combined with a cover.

In addition to the rotor motor of the embodiment of the present invention, a central portion of the first cover body of the isolation cover is provided with a through hole, and the rotating shaft extends through the perforation to extend outside the isolation cover.

The outer rotor motor as described above, wherein the first cover further comprises a sealing ring that is coupled to the peripheral edge of the perforation.

The outer rotor motor, wherein the second cover body of the isolation cover is also provided with a through hole, and the rotation shaft is adjacent to the outer side of the second cover body and protrudes through the perforation of the second cover body. .

The outer rotor motor, wherein the first cover further comprises a sealing ring, the sealing ring is coupled to the perforated periphery of the first cover, and the second cover further comprises a sealing ring, the second cover The sealing ring of the body is coupled to the perforated periphery of the second cover.

An outer rotor motor according to various embodiments of the present invention, wherein the first cover and the second The cover is combined with each other by means of locking, snapping, tight fitting, screwing or splicing.

Therefore, the outer rotor motor of the present invention can cover the stator in the radial direction and the axial direction by the isolation cover, and ensure that the isolation cover can isolate the stator from the outside to effectively prevent moisture. Or foreign matter invades the inside of the outer rotor motor to achieve the effect of prolonging the service life of the outer rotor motor.

〔this invention〕

1‧‧‧Isolation cover

11‧‧‧First cover

111‧‧‧Perforation

112‧‧‧Seal ring

12‧‧‧Second cover

121‧‧‧Perforation

122‧‧‧Seal ring

13‧‧‧ airtight ring

2‧‧‧stator

21‧‧‧ iron core

22‧‧‧ coil

23‧‧‧ Pedestal

231‧‧‧Extension

3‧‧‧Rotor

31‧‧‧ shaft

32‧‧‧Permanent magnet set

33‧‧·wheels

4‧‧‧ bearing set

41‧‧‧ shaft tube

42‧‧‧ bearing

43‧‧‧Segai

5‧‧‧Drive Circuit Board

6‧‧‧Metal shell

61‧‧‧ first housing

62‧‧‧Second housing

63‧‧‧ Cover

631‧‧‧ screw hole

B1‧‧‧Substrate Department

B2‧‧‧Circle wall

R‧‧‧Circuit Housing

P‧‧‧positioning parts

[study]

9‧‧‧Outer rotor motor

91‧‧‧ Stator

92‧‧‧Rotor

921‧‧‧ shaft

922‧‧·wheels

923‧‧‧Permanent magnet set

93‧‧‧Base

Fig. 1 is a sectional view showing a combination of a conventional outer rotor motor.

Fig. 2 is a schematic cross-sectional view showing a first embodiment of the outer rotor motor of the present invention.

Figure 3 is a cross-sectional view showing a second embodiment of the outer rotor motor of the present invention.

Figure 4 is a cross-sectional view showing a third embodiment of the outer rotor motor of the present invention.

Figure 5 is a cross-sectional view showing a fourth embodiment of the outer rotor motor of the present invention.

Figure 6 is an embodiment of an outer rotor motor embodiment of the present invention comprising a metal shell.

Fig. 7 is a view showing another embodiment of the outer rotor motor embodiment of the present invention comprising a metal shell.

Figure 8 is a further embodiment of the outer rotor motor embodiment of the present invention comprising a metal shell.

The above and other objects, features and advantages of the present invention will become more <RTIgt; The rotor motor of the first embodiment of the present invention comprises a spacer 1, a stator 2 and a rotor 3. The stator 2 and the rotor 3 are disposed inside the isolation cover 1. The spacer 1 is adapted to be coupled to the stator 2 and the rotor 3 for driving the rotor 3 to rotate.

The isolation cover 1 can be made of an insulating material (for example, plastic), and the isolation cover 1 is a two-piece cover. The two-piece cover can be a two-piece cover or a hollow cover and a cover. Plate-shaped cover. In detail, the isolation cover 1 includes a first cover 11 and a second cover. 12, the first cover 11 and the second cover 12 can be combined with each other to constitute the isolation cover 1. The spacer 1 can be of various structural designs capable of combining the stator 2 and the rotor 3 described above, and the present invention does not limit the appearance of the spacer 1. The first cover 11 and the second cover 12 can be coupled to each other by locking, snapping, tight fitting, screwing or splicing.

The stator 2 includes an iron core 21, and the outer circumference of the iron core 21 can be wound around the coil 22. The iron core 21 is disposed between the first cover 11 and the second cover 12 such that the stator 2 can be coupled to the inside of the isolation cover 1 . The first cover 11 and the second cover 12 of the isolation cover 1 can completely cover the stator 2; preferably, the first cover 11 can have an outer shape including a substrate portion B1, the substrate The portion B1 may extend along a radial direction of the outer rotor motor, and the peripheral edge of the substrate portion B1 may be connected to a circumferential wall B2 from the substrate portion B1 along the axial direction of the outer rotor motor toward the second cover. The body 12 is extended so that the first cover 11 can have a substantially U-shaped hollow cover in a cross-sectional direction as shown in FIG. In this embodiment, the second cover 12 also includes a substrate portion B1. The substrate portion B1 of the second cover 12 can extend along a radial direction of the outer rotor motor. However, the second cover 12 The substrate portion B1 is not connected to any circumferential wall, and the second cover 12 is formed into a plate-shaped cover. The first cover 11 and the substrate portion B1 of the second cover 12 are supported by the first cover 11 The circumferential wall B2 is spaced apart from each other such that a distance is formed between the first cover 11 and the substrate portion B1 of the second cover 12. The second cover 12 can still form a hollow cover with the first cover 11. The stator 2 is covered by the body, and the substrate portion B1 of the second cover 12 is snap-fitted to the circumferential wall B2 of the first cover 11.

In the embodiment of the present invention, the peripheral edge of the substrate portion B1 of the second cover 12 may be connected to a circumferential wall extending from the substrate portion B1 of the second cover 12 along the outer rotor motor. The axial direction extends toward the first cover 11 , and the substrate portion B1 of the first cover 11 may not be connected to any circumferential wall, so that the first cover 11 forms a plate-shaped cover. The first cover 11 and the base portion B1 of the second cover 12 are spaced apart from each other by the circumferential wall of the second cover 12 such that the first cover 11 and the base portion B1 of the second cover 12 Forming a room The first cover 11 can also cover the stator 2 together with the hollow cover formed by the second cover 12 .

The rotor includes a rotating shaft 31, a permanent magnet group 32 and a hub 33. The rotating shaft 31 is rotatably coupled to the iron core 21. The hub 33 is disposed on the first cover together with the iron core 21 of the stator 2. Between the second cover 12 and the second cover 12, the hub 33 can be coupled to the outer circumference of the rotating shaft 31, and the permanent magnet group 32 can be coupled to the inner wall of the hub 33. Thereby, the permanent magnet group 32 will be formed between the iron core 21 and the hub 33, and an air gap will be formed between the permanent magnet group 32 and the iron core 21. The axial direction of the outer rotor motor is parallel to the direction of the rotating shaft 31, and the radial direction of the outer rotor motor is perpendicular and the direction through the rotating shaft 31, which is generally available to those skilled in the art to which the present invention pertains. Understander. The outer rotor motor of the first embodiment may further include a bearing set 4, and the bearing set 4 may be disposed on the base portion B1 of the second cover 12 of the spacer 1. In more detail, the bearing assembly 4 includes a shaft tube 41 and at least one bearing 42. The shaft tube 41 is disposed at the center of the base portion B1 of the second cover 12, and the shaft tube 41 can be assembled and fixed to the second portion. The substrate portion B1 of the cover 12; or the shaft tube 41 may be integrally formed with the substrate portion B1 of the second cover 12, which is not limited in the present invention. The at least one bearing 42 can be coupled to the inside of the shaft tube 41. Accordingly, since the shaft tube 41 is fixed to the base portion B1 of the second cover 12, the iron core 21 of the stator 2 can be coupled to the outer circumference of the shaft tube 41, and the rotating shaft 31 of the rotor 3 can be coupled to the bearing. At least one bearing 42 of the set 4 causes the rotating shaft 31 to be rotatably coupled to the core 21.

The core 21 of the stator 2 can be coupled to the shaft tube 41 by means of a tight fit, a locking or a snap, so that the stator 2 can be fixed inside the cage 1 without limitation. In addition, the shaft tube 41 can be coupled to a plug cover 43 adjacent to one end of the second cover body 12. The plug cover 43 can be made of a material having good elasticity (for example, rubber), so that the plug cover 43 can seal the shaft. The tube 41 further prevents moisture or foreign matter from entering the inside of the outer rotor motor via the second cover 12. In addition, at least one end of the rotating shaft 31 can penetrate the hub 33 to extend through the partition. Leave the outside of the cover 1. For example, in the embodiment, the center of the substrate portion B1 of the first cover 11 of the isolation cover 1 can be provided with a through hole 111, whereby the end of the rotating shaft 31 adjacent to the first cover 11 can pass through the through hole. The outer surface of the insulating cover 1 can be extended beyond the outer periphery of the insulating cover 1 in the embodiment of the present invention. The present invention is not limited. The first cover 11 may further include a sealing ring 112. The sealing ring 112 may be made of a resilient material such as rubber or silicone. The sealing ring 112 is coupled to the periphery of the through hole 111 to reduce the rotating shaft 31 and the first portion. A gap of a cover 11.

When the rotor motor is actually used in the first embodiment of the present invention, the core 21 can be magnetically coupled to the permanent magnet group 32 after the coil 22 is energized, so that the shaft 31 can rotate relative to the core 21. The operation principle and detailed structure of the stator 2 and the rotor 3 will be understood by those skilled in the art to which the present invention pertains, and will not be described again.

With the above structure, the outer rotor motor of the first embodiment of the present invention is provided with the spacer 1 , and the first cover 11 and the second cover 12 of the spacer 1 can completely cover the stator 2 and the rotor 3 . The members such as the permanent magnet group 32 and the hub 33 can effectively prevent moisture or foreign matter from entering the inside of the outer rotor motor, and can extend the service life of the outer rotor motor.

Referring to FIG. 3, the rotor motor of the second embodiment of the present invention is different from the foregoing first embodiment in that the peripheral edge of the substrate portion B1 of the second cover 12 is also connected to a circumferential wall B2. The circumferential wall B2 extends from the substrate portion B1 of the second cover 12 toward the first cover 11 along the axial direction of the outer rotor motor, so that the second cover 12 is in the cross-sectional direction shown in FIG. In the above, the cross-sectional portion of the first cover 11 can be locked to the circumferential wall B2 of the first cover 11 in a substantially U-shaped hollow cover. In other words, in the embodiment, the first cover body 11 and the second cover body 12 respectively form a hollow cover body, so that the stator 2 can be provided in the radial direction and the axial direction of the outer rotor motor. The coating effect. An airtight ring 13 may be disposed between the first cover 11 and the circumferential wall B2 of the second cover 12, and the airtight ring 13 may be made of an elastic material such as rubber or silicone. Through the first The airtight ring 13 is disposed between the cover 11 and the second cover 12, which can effectively improve the sealing effect of the isolation cover 1, and further prevent moisture or foreign matter from entering the outer rotor to the inside.

Furthermore, the stator 2 further includes a base 23, and the bearing set 4 is disposed at the center of the base 23. The base 23 can be disposed between the iron core 21 and the second cover 12 through locking, snapping or tight fitting; or, as shown in FIG. 3, the base 23 can be mounted on a positioning In the piece P, the positioning member P is formed in a seat body inside the isolation cover 1. In detail, the shaft tube 41 of the bearing set 4 is disposed at the center of the base 23, and the shaft tube 41 of the bearing set 4 can be assembled and fixed to the base 23; alternatively, the shaft tube 41 can be integrated with the base 23. Forming, the invention is not limited. At least one bearing 42 of the bearing set 4 is also incorporated inside the shaft tube 41. Accordingly, since the shaft tube 41 is fixed to the base 23, the iron core 21 of the stator 2 can be coupled to the outer circumference of the shaft tube 41, and the rotating shaft 31 of the rotor 3 can be coupled to at least one bearing of the bearing set 4. 42.

It is to be noted that the base 23 of the stator 2 can isolate a circuit receiving portion R inside the isolation cover 1 , and the circuit receiving portion R is formed on the base portion 23 and the base portion of the second cover 12 . Between B1. The circuit housing portion R is provided with circuit components such as a driving circuit board, an electric control module or a power conversion unit of the outer rotor motor. For example, in the embodiment, a driving circuit board 5 is disposed in the circuit receiving portion R, and the driving circuit board 5 can be coupled to the base 23; however, the driving circuit board 5 can also be coupled to The second cover 12 is not limited in the present invention. The electronic components on the driving circuit board 5 can be electrically connected to the coils 22 of the stator 2 via electrical connections such as wires, electrical pins or copper posts, as will be understood by those skilled in the art.

The second cover 12 can be detachably coupled to the first cover 11 by locking, snapping, screwing or splicing. Accordingly, the second cover 12 can be removed by the user, so that the maintenance personnel can repair or replace the circuit components such as the drive circuit board, the electric control module or the power conversion unit in the circuit housing portion R, and can Improve the maintenance convenience of the outer rotor motor.

Referring to FIG. 4, the rotor motor of the third embodiment of the present invention is different from the foregoing second embodiment in that the circumferential wall B2 of the first cover 11 and the second cover 12 are The circumferential wall B2 is commonly clamped to fix the base 23 of the stator 2; in other words, the base 23 can extend in the radial direction of the outer rotor motor to the circumferential wall of the first cover 11 and the second cover 12. Between B2. Accordingly, the base 23 can be surely clamped and fixed between the first cover 11 and the second cover 12 to improve the assembly stability of the rotor motor outside the third embodiment.

Moreover, in some embodiments of the present invention, the opposite ends of the rotating shaft 31 of the rotor 3 may penetrate the hub 33 and the bearing set 4 to respectively protrude to the outside of the insulating cover 1. For example, as shown in FIG. 4, the center of the base portion B1 of the second cover 12 of the cage 1 may also be provided with a through hole 121, whereby the end of the rotating shaft 31 adjacent to the second cover 12 may be The through hole 121 extends out of the outer cover 1 so that the opposite ends of the rotating shaft 31 can extend beyond the outer cover 1. The invention is not limited. The second cover 12 may further include a sealing ring 122. The sealing ring 122 may be made of a resilient material such as rubber or silicone. The sealing ring 122 is coupled to the periphery of the through hole 121 to reduce the rotating shaft 31 and the same. The gap of the second cover 12.

Referring to FIG. 5, the rotor motor of the fourth embodiment of the present invention is different from the foregoing third embodiment in that the base 23 of the stator 2 is provided with an extending portion 231, and the extending portion 231 can be The first cover 11 or the second cover 12 extends in the axial direction of the outer rotor motor. In this embodiment, the two sides of the extending portion 231 extend toward the first cover 11 and the second cover 12 respectively, whereby the extending portion 231 can lift the contact of the base 23 with the isolation cover 1 . The area is increased to improve the sealing effect of the cage 1 to further prevent moisture or foreign matter from entering the outer rotor to the inside.

In some embodiments of the present invention, the isolation cover 1 is made of an insulating material, whereby the isolation cover 1 can completely cover the stator 2, the permanent magnet group 32 of the rotor 3 and the hub 33, and the bearing set 4 And the member such as the driving circuit board 5, the spacer 1 can enable the respective The member is insulated from the outer space of the outer rotor motor to prevent leakage current generation, and the insulation effect of the outer rotor motor can be improved. In addition, as shown in FIG. 6, when the spacer 1 is made of an insulating material, the outer rotor motor may further include a metal shell 6 so that the spacer 1 (the permanent magnet group including the stator 2 and the rotor 3) 32. The hub 33, the bearing set 4 and the drive circuit board 5) can be further accommodated inside the metal shell 6. The metal cover 6 can be locked, snapped, tightly fitted, screwed or spliced to provide better structural strength and better protection. The motor of the embodiment of the present invention can provide an insulation effect by the isolation cover 1 to prevent current from being conducted between the stator 2 and the metal case 6 to generate a leakage current.

Furthermore, the metal shell 6 can include a first housing 61 and a second housing 62 for covering the first cover 11 and the second cover 12 of the isolation cover 1 . The first housing 61 defines a hollow cover. The first housing 61 defines an open end at the position of the second cover 12, and the second housing 62 is removably coupled to the first cover. The housing 61 is configured to close the open end of the first housing 61. Thereby, the spacer 1 can be completely accommodated inside the metal shell 6. Alternatively, in some embodiments of the present invention, the metal case includes a first housing 61 and a second housing 62, and the second housing 62 can be used to cover the first cover 11 and the second cover of the isolation cover. The second housing 62 defines a hollow cover. The second housing 62 defines an open end at the position of the first cover 11. The first housing 11 is removably coupled to the cover. The second housing 12 is configured to close the open end of the second housing 12. In other words, at least one of the first housing 61 or the second housing 62 of the metal shell 6 can form a hollow cover.

For example, as shown in FIG. 7 , the first housing 61 and the second housing 62 can also form a hollow cover body, and the first housing 61 has an open end and the second housing 62 . An open end is oppositely configured to cover the first cover of the isolation cover 1 by the first and second housings 61 and 62 when the first housing 61 and the second housing 62 are coupled to each other. 11 and the second cover 12. On the other hand, the second housing 62 and the second cover 12 can be removed by the user for inspection. The repairer can repair or replace the circuit components such as the drive circuit board, the electronic control module, or the power conversion unit in the circuit housing portion R.

In addition, in the embodiment of the present invention, the metal shell 6 includes a first housing 61 and two second covers 63. The first housing 61 has two opposite ends. a first housing 61 covering the first cover 11 and the second cover 12 of the isolation cover 1 , wherein the openings of the two ends of the first housing 61 are respectively located in the first cover 11 and the first cover The position of the two shells 12, and the openings at the two ends of the first shell 61 are combined with a cover 63, so that the above-mentioned assembled shield 1 can be sealed inside the metal shell 6 to provide better protection. . In addition, the cover 63 of the first housing 61 adjacent to one end of the first cover 11 may be provided with a through hole for the rotation of the rotating shaft 31 to the outside of the metal shell 6. However, in some embodiments of the present invention, the two covers 63 may each be provided with a through hole for the opposite ends of the rotating shaft 31 to simultaneously extend outside the metal shell 6. In addition, at least one of the end faces of the cover 63 (which is a surface facing outward in the drawing) may be provided with at least one screw hole 631 to facilitate locking the outer rotor motor of the present invention to various products, thereby improving the use and Assembly convenience.

According to the foregoing structure, the main feature of the embodiments of the present invention is that the first cover 11 and the second cover 12 of the isolation cover 1 can completely cover the design of the stator 2, so that the isolation cover 1 is The outer rotor motor can cover the stator 2, the permanent magnet group 32 of the rotor 3 and the hub 33 in the radial direction and the axial direction, thereby ensuring that the spacer 1 can isolate the stator 2 from the outside and effectively prevent water. Gas or foreign matter invades the inside of the outer rotor motor to prevent oxidation or damage of the internal components of the outer rotor motor, and the effect of prolonging the service life of the outer rotor motor can be achieved.

On the other hand, in some embodiments of the present invention, the stator 2 further includes a base 23, and the base 23 can isolate a circuit receiving portion R inside the isolation cover 1. The circuit receiving portion R is formed on the circuit. The susceptor 23 is between the base portion 23 and the substrate portion B1 of the second cover 12. The second cover 12 can be detachably connected to the first cover 11 by locking, snapping, screwing or splicing. Therefore, the second cover 12 can be removed by the user, so that the maintenance personnel can repair or replace the circuit components such as the driving circuit board, the electric control module or the power conversion unit in the circuit housing portion R, and can Achieve the effect of improving the maintenance convenience of the outer rotor motor.

Furthermore, in some embodiments of the present invention, the circumferential wall B2 of the first cover 11 and the circumferential wall B2 of the second cover 12 jointly hold and fix the base 23 of the stator 2. The base 23 can The extending direction of the outer rotor motor extends between the first cover 11 and the circumferential wall B2 of the second cover 12, and the base 23 can be further provided with an extension 231, the extension 231 can be along The axial direction of the outer rotor motor extends toward the first cover 11 or the second cover 12 to increase the contact area of the base 23 with the cover 1 so that the base 23 can be clamped and fixed to The first cover 11 and the second cover 12 have the effect of improving the assembly stability of the outer rotor motor.

In addition, in some embodiments of the present invention, the isolation cover 1 may be made of an insulating material, and the isolation cover 1 can completely cover the stator 2 to prevent leakage current generation; preferably, when the isolation cover When the inside of the metal shell 6 is combined with the inside of the metal shell 6, the spacer 1 can be effectively prevented from being electrically connected between the metal shell 6 and the stator 2, thereby improving the insulation effect of the outer rotor motor.

While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.

1‧‧‧Isolation cover

11‧‧‧First cover

111‧‧‧Perforation

112‧‧‧Seal ring

12‧‧‧Second cover

2‧‧‧stator

21‧‧‧ iron core

22‧‧‧ coil

3‧‧‧Rotor

31‧‧‧ shaft

32‧‧‧Permanent magnet set

33‧‧·wheels

4‧‧‧ bearing set

41‧‧‧ shaft tube

42‧‧‧ bearing

43‧‧‧Segai

B1‧‧‧Substrate Department

B2‧‧‧Circle wall

Claims (20)

An outer rotor motor includes: an isolation cover made of an insulating material, and the isolation cover includes a first cover and a second cover; the stator includes a core and a base a base disposed between the iron core and the second cover; a rotor including a rotating shaft, a permanent magnet and a hub, the rotating shaft is rotatably coupled to the iron core, the hub and the The iron core is disposed between the first cover body and the second cover body, the hub is coupled to the outer circumference of the rotating shaft, the permanent magnet group is coupled to the inner wall of the hub, and the permanent magnet group is formed on the iron core and the hub And a bearing set, the bearing set includes a shaft tube and at least one bearing, the shaft tube is disposed on the base, the at least one bearing is coupled to the inside of the shaft tube, and the rotating shaft of the rotor is coupled to the bearing set At least one bearing. The rotor motor of claim 1, wherein the base isolates a circuit receiving portion formed inside the spacer, the circuit receiving portion being formed between the base and the second cover. The motor of claim 2, wherein the circuit receiving portion is configured to set a driving circuit board, an electric control module or a power conversion unit of the motor. The rotor motor of claim 2, wherein the second cover is detachably coupled to the first cover. The rotor motor of claim 1, wherein the base extends in a radial direction of the outer rotor motor between the first cover and the second cover to make the first cover The base is clamped and fixed together with the second cover. The rotor motor of claim 5, wherein the base is provided with an extension portion facing the first cover body or the second cover body along an axial direction of the outer rotor motor. extend. An outer rotor motor comprising: a spacer, the spacer is made of an insulating material, and the spacer comprises a first cover and a second cover; a stator, the stator comprises a core; a rotor The rotor includes a rotating shaft, a permanent magnet and a hub, the rotating shaft is rotatably coupled to the iron core, the hub and the iron core are disposed between the first cover body and the second cover body, and the wheel hub is coupled The permanent magnet group is coupled to the inner wall of the hub, the permanent magnet group is formed between the iron core and the hub; and a bearing set including a shaft tube and at least one bearing, the shaft The pipe system is disposed on the second cover, the at least one bearing is coupled to the inside of the shaft tube, and the rotating shaft of the rotor is coupled to at least one bearing of the bearing set. The rotor motor of claim 7, wherein the shaft tube is coupled to a plug cover adjacent to one end of the second cover. The rotor motor of claim 1 or 7, wherein the first cover and the second cover respectively comprise a base portion, each of the base portions extending along a radial direction of the outer rotor motor . The rotor motor of claim 9, wherein the substrate portion of the first cover is connected to a circumferential wall, and the circumferential wall of the first cover faces the second cover along an axial direction of the motor. Or extending; or the substrate portion of the second cover is connected to a circumferential wall, and the circumferential wall of the second cover extends toward the first cover along an axial direction of the motor. The rotor motor of claim 10, wherein the substrate portion of the first cover is provided with the circumferential wall, and the second cover forms a plate-like cover; or the second cover The substrate portion is provided with the circumferential wall, and the first cover forms a plate-shaped cover. Alternatively, the substrate portion of the first cover and the substrate portion of the second cover are provided with the circumferential wall. The motor of claim 1 or 7, wherein the motor further comprises a metal shell, the spacer being housed inside the metal shell. The motor of claim 12, wherein the metal casing comprises a first casing and a second casing, the first casing is for covering the first casing and the second casing of the isolation cover a cover body, the first housing forms an open end at the position of the second cover body, and the second housing is detachably coupled to the first housing for closing the open end of the first housing Or the first housing and the second housing, the second housing is configured to cover the first cover and the second cover of the isolation cover, and the second housing is A cover is formed at an open end, and the first housing is removably coupled to the second housing for closing the open end of the second housing. The motor of claim 12, wherein the first housing and the second housing respectively form a hollow cover, and the open end of the first housing is open to the second housing The first housing and the second housing are coupled to each other to jointly cover the first cover and the second cover of the isolation cover. The motor of claim 12, wherein the metal casing comprises a first casing and a second casing, the first casing being a hollow cylinder having opposite ends at two ends, the first casing The first cover and the second cover of the isolation cover are covered, and the two end openings of the first housing are combined with a cover. The motor of any one of the preceding claims, wherein the first cover of the isolation cover is provided with a through hole at a center thereof, and the rotation shaft extends through the perforation adjacent to one end of the first cover The outside of the cover. The rotor motor of claim 16, wherein the first cover further comprises a sealing ring coupled to the peripheral edge of the perforation. The rotor motor of claim 16, wherein the second cover of the spacer is also provided with a through hole at a center thereof, and the rotating shaft is adjacent to one end of the second cover via the second cover The perforation extends beyond the outside of the isolation cover. The rotor motor of claim 18, wherein the first cover further comprises a sealing ring coupled to the perforated periphery of the first cover, the second cover further comprising a seal The ring, the sealing ring of the second cover is coupled to the perforated periphery of the second cover. The motor of any one of claims 1 to 11, wherein the first cover and the second cover are coupled to each other by locking, snapping, tight fitting, screwing or splicing.