CN112436638A

CN112436638A - AC/DC brushless motor

Info

Publication number: CN112436638A
Application number: CN202011261086.5A
Authority: CN
Inventors: 周海春
Original assignee: Jiangsu Anchor Tools Co ltd
Current assignee: Jiangsu Tengya Iron Anchor Tool Co ltd
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-03-02

Abstract

The invention discloses an AC/DC brushless motor, comprising: output shaft, stator and rotor, the rotatable setting of rotor is inboard in the stator, and the shaft hole has been seted up in the centre of rotor, and the output shaft is inserted and is located the shaft hole, and the both ends of output shaft are equipped with first bearing and second bearing, and the rotor axial is provided with a plurality of through-holes, and the rotor radially is provided with a plurality of ventilation holes. The motor can cross the wind and cross the ash from the bearing and the shaft inner hole through the design of the ventilation hole, thereby effectively prolonging the service life of the motor by avoiding the wind and the ash between the rotor and the stator, and solving the big defect that the magnet of the brushless motor adsorbs the dust. And the traditional motor cooling is realized by passing air and dust between the stator and the rotor, so that the bearing can be fixed by the stator bracket, and the bearing is fixed with the rotor, so that the stator and the rotor form an integrated structure, iron powder in a working environment can not be absorbed between the rotor and the stator, and the industrial problem that the rotor adsorbs the iron powder of the brushless motor is solved.

Description

AC/DC brushless motor

Technical Field

The invention relates to the technical field of brushless motors, in particular to an alternating current and direct current brushless motor.

Background

The traditional brushless motor utilizes fan blades to select air draft, so that the air passage passes through air ash outside the rotor and the stator, but the defect of the traditional brushless motor is that iron powder is easily adsorbed on the surface of the rotor, and the service life of the motor is influenced.

Disclosure of Invention

It is an object of the present invention to provide an ac/dc brushless motor that solves one or more of the above mentioned problems of the prior art.

The invention provides an AC/DC brushless motor, comprising: the output shaft is inserted into the shaft hole, a first bearing and a second bearing are arranged at two ends of the output shaft, a plurality of through holes are axially formed in the rotor, and a plurality of ventilation holes are radially formed in the rotor.

In some embodiments, the wind turbine further includes a wind blade and a third bearing, the wind blade is sleeved on the output shaft and located on one side of the rotor, and the third bearing is sleeved on the output shaft and located on one side of the wind blade far away from the rotor.

In some embodiments, the cross-section of the vent is circular, trilateral, quadrilateral or hexagonal.

In some embodiments, the stator further comprises a first stator bracket for fixing the first bearing and the stator, and a second stator bracket for fixing the second bearing and the stator.

In some embodiments, the rotor comprises a stack of a plurality of arc angle rotor steel sheets secured by glue or a securing iron sleeve, the arc angle rotor steel sheets provided with a plurality of securing slots.

In some embodiments, a magnet is arranged on the arc-angle rotor steel sheet, the magnet is fixed on the fixing groove, and the shape of the magnet is matched with that of the fixing groove.

In some embodiments, the magnet is rectangular, arc-shaped or ring-shaped, the fixing groove is rectangular or arc-shaped, the rectangular magnet is fixed to the rectangular fixing groove, the arc-shaped magnet is fixed to the arc-shaped fixing groove, and the ring-shaped magnet is fixed to the ring-shaped fixing groove.

In some embodiments, the arc angle rotor steel sheet is injection molded steel sheet.

Has the advantages that:

the motor of the invention can pass through the air and the dust from the bearing and the inner hole of the shaft through the design of the vent hole, thus avoiding passing through the air and the dust between the rotor and the stator, effectively prolonging the service life of the motor and solving the big defect that the magnet of the brushless motor adsorbs the dust. And traditional motor cooling crosses the dust and thus realizes cooling from passing between stator and the rotor, so the design can utilize stator support fixed bearing, and bearing and rotor are fixed, make stator and rotor form an organic whole structure, make like this the iron powder in operational environment can not inhale between the stator that changes, improve brushless motor and the trade difficult problem that the iron powder was adsorbed to the rotor all the time, and then improve the motor life-span to can guarantee to change the concentricity of stator.

Drawings

FIG. 1 is a schematic structural diagram of an AC/DC brushless motor according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an arc angle rotor steel sheet of an AC/DC brushless motor according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a structure of a brushless DC motor according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a structure of a brushless DC motor according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an ac/dc brushless motor magnet according to an embodiment of the present invention.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. 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 application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

As shown in fig. 1:

AC/DC brushless motor, comprising: output shaft 1, stator 10 and rotor 12, rotor 12 rotatable set up in the stator 10 is inboard, the shaft hole has been seted up in the centre of rotor 12, output shaft 1 is inserted and is located in the shaft hole, the both ends of output shaft 1 are equipped with first bearing 2 and second bearing 3, rotor 12 axial is provided with a plurality of ventilation holes 4, rotor 12 radially is provided with a plurality of ventilation holes 5. So design, can cross the wind ash of crossing from bearing and axle hole, thereby just avoided crossing the wind ash of crossing between the stator and effectively improving the motor life-span like this, solve a big drawback of brushless motor magnet adsorption dust.

Further, the wind driven generator further comprises a fan blade 6 and a third bearing 7, wherein the fan blade 6 is sleeved on the output shaft 1 and located on one side of the rotor 12, and the third bearing 7 is sleeved on the output shaft 1 and located on one side, far away from the rotor 12, of the fan blade 6.

Further, the cross section of the vent hole 4 is circular, triangular, quadrangular or hexagonal.

Further, the stator structure comprises a first stator support 8 and a second stator support 9, wherein the first stator support 8 is connected with the first bearing 2 and the stator 10, and the second stator support 9 is connected with the second bearing 3 and the stator 10.

Thereby traditional motor cooling crosses the wind dust and realizes the cooling between stator and the rotor, so the design, can utilize stator support fixing bearing, and bearing and rotor are fixed, make stator and rotor form an organic whole structure, make like this that the iron powder in operational environment can not inhale between the stator that changes, improve brushless motor and adsorb the trade difficult problem of iron powder all the time, and then improve the motor life-span to can guarantee the concentricity that changes the stator.

Further, as shown in fig. 2, the rotor 12 includes a plurality of arc angle rotor steel sheets 13 stacked, the arc angle rotor steel sheets 13 are fixed by glue or a fixing iron sleeve, and the arc angle rotor steel sheets 13 are provided with a plurality of fixing grooves. By the design, a multi-stage magnet inserting mode of 6 pairs of poles, 8 pairs of poles or 10 pairs of poles can be adopted, so that the magnets are prevented from falling out.

Further, the arc-angle rotor steel sheet 13 is provided with a magnet 11, the magnet 11 is fixed on the fixing groove, and the shape of the magnet 11 is matched with that of the fixing groove.

Further, as shown in fig. 3 to 5, the magnet 11 is a rectangular magnet 14, an arc-shaped magnet 15, or a ring-shaped magnet 16, the fixing groove is rectangular or arc-shaped, the rectangular magnet 14 is fixed to the rectangular fixing groove, the arc-shaped magnet 15 is fixed to the arc-shaped fixing groove, and the ring-shaped magnet 16 is fixed to the ring-shaped fixing groove.

Further, the arc angle rotor steel sheet 13 is an injection molding coated steel sheet. So design, can be used for guaranteeing motor inside whole insulating and sealed, and then change traditional inside wire winding to outside wire winding.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these should also be construed as being within the scope of the present invention.

Claims

1. AC/DC brushless motor, characterized by comprising: output shaft (1), stator (10) and rotor (12), rotor (12) rotatable set up in stator (10) are inboard, the shaft hole has been seted up to the centre of rotor (12), output shaft (1) is inserted and is located in the shaft hole, the both ends of output shaft (1) are equipped with first bearing (2) and second bearing (3), rotor (12) axial is provided with a plurality of ventilation holes (4), rotor (12) radially are provided with a plurality of ventilation holes (5).

2. The AC/DC brushless motor according to claim 1, further comprising a fan blade (6) and a third bearing (7), wherein the fan blade (6) is sleeved on the output shaft (1) and located on one side of the rotor (12), and the third bearing (7) is sleeved on the output shaft (1) and located on one side of the fan blade (6) away from the rotor (12).

3. AC/DC brushless motor according to claim 1, characterized in that the cross section of the ventilation holes (4) is circular, triangular, quadrangular or hexagonal.

4. The AC-DC brushless motor according to claim 1, further comprising a first stator bracket (8) and a second stator bracket (9), wherein the first stator bracket (8) is used for fixing the first bearing (2) and the stator (10), and the second stator bracket (9) is used for fixing the second bearing (3) and the stator (10).

5. The AC-DC brushless motor according to claim 1, wherein the rotor (12) comprises a plurality of arc angle rotor steel sheets (13) stacked, the arc angle rotor steel sheets (13) are fixed by glue or a fixing iron sleeve, and the arc angle rotor steel sheets (13) are provided with a plurality of fixing grooves.

6. The AC/DC brushless motor according to claim 5, wherein the arc angle rotor steel sheet (13) is provided with a magnet (11), the magnet (11) is fixed on the fixing groove, and the shape of the magnet (11) is matched with the shape of the fixing groove.

7. The AC-DC brushless motor according to claim 6, wherein the magnet (11) is a rectangular magnet (14), an arc-shaped magnet (15) or a ring-shaped magnet (16), the fixing slot is rectangular or arc-shaped, the rectangular magnet (14) is fixed to the rectangular fixing slot, the arc-shaped magnet (15) is fixed to the arc-shaped fixing slot, and the ring-shaped magnet (16) is fixed to the ring-shaped fixing slot.

8. AC/DC brushless motor according to claim 5, characterized in that the arc angle rotor steel sheet (13) is an injection-molded steel sheet.