CN212231314U

CN212231314U - High-efficiency brushless outer rotor motor

Info

Publication number: CN212231314U
Application number: CN202021180715.7U
Authority: CN
Inventors: 陈远志; 张立东
Original assignee: Shenzhen Ld Power Technology Ltd
Current assignee: Shenzhen Ld Power Technology Ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2020-12-25
Anticipated expiration: 2030-06-23

Abstract

The utility model relates to a brushless motor technical field, concretely relates to high efficiency brushless external rotor electric machine, including rotor subassembly, stator module and wind-guiding subassembly, wind-guiding subassembly and rotor subassembly are located the left and right sides of stator module respectively, and the rotor subassembly includes the protecgulum, and the centre of protecgulum is equipped with the motor shaft, and the left side of protecgulum is equipped with the columniform iron-clad, and stator module includes the end cover, and the right side of end cover is equipped with stator core, and stator core's inboard is fixed with copper wire winding, and copper wire winding's right side; the utility model discloses the brushless motor of turning outward that sets up can raise the efficiency, only needs former motor half's size ratio just to realize the more superior spraying effect of complete machine, realizes more superior performance under the volume ratio of minimum, saves instrument complete machine space and material cost, and because of the brushless switching-over structure of while, can not produce spark, dust, can improve life, safety ring protects more.

Description

High-efficiency brushless outer rotor motor

Technical Field

The utility model relates to a brushless motor technical field, concretely relates to brushless external rotor electric machine of high efficiency.

Background

The brushless direct current motor is composed of a motor main body and a driver, and is a typical electromechanical integration product. Because the brushless DC motor is operated in a self-control mode, a starting winding is not additionally arranged on a rotor like a synchronous motor which is started under the condition of heavy load under the condition of frequency conversion and speed regulation, and oscillation and step-out can not be generated when the load suddenly changes. The permanent magnet of the brushless DC motor with medium and small capacity is mostly made of rare earth neodymium iron boron material with high magnetic energy level at present, the brushless DC motor adopts a semiconductor switch device to realize electronic commutation, namely the electronic switch device replaces the traditional contact commutator and electric brush. The device has the advantages of high reliability, no reversing spark, low mechanical noise and the like, and is widely applied to high-grade recording seats, video recorders, electronic instruments and automatic office equipment.

With the wider range of electric tools using brushless motors, the most used motors in the market at present are series excited motors or direct current brush motors, but the efficiency of the motors is generally not high enough, sparks and dust are easy to generate, and the service life is too short.

Based on this, the utility model designs a brushless external rotor electric machine of high efficiency to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a brushless external rotor electric machine of high efficiency to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a high-efficiency brushless external rotor motor comprises a rotor assembly, a stator assembly and an air guide assembly, wherein the air guide assembly and the rotor assembly are respectively positioned at the left side and the right side of the stator assembly, the rotor assembly comprises a front cover, a motor shaft is arranged in the middle of the front cover, the motor shaft extends towards the left side, a hexagon socket flat end set screw is arranged at the joint of the front cover and the motor shaft, the motor shaft is fixedly connected with the front cover through the hexagon socket flat end set screw, a cylindrical iron shell is arranged at the left side of the front cover, the iron shell is fixedly bonded with the front cover through anaerobic adhesive in an interference fit manner, a plurality of magnet slots are uniformly arranged at the left side of the front cover along the circumferential direction, a plurality of magnets are uniformly arranged at the inner side of the iron shell along the circumferential direction, the magnets are fixedly bonded with the inner wall of the iron shell through magnet adhesive, the right end of each magnet, and the right-hand member of end cover is fixed with the sleeve pipe, and the right side of end cover is equipped with outer rotor stator core, and outer rotor stator core evenly is equipped with a plurality of stator slots along the circumferencial direction, and stator slot internal winding is fixed with copper wire winding, and copper wire winding's right side is connected with the power cord, and the sleeve pipe stretches into in the copper wire winding and with copper wire winding fixed connection, and outer rotor stator core and copper wire winding all are located the iron-clad.

Furthermore, the air guide assembly comprises an air guide fan cover, an impeller is arranged on the right side of the air guide fan cover, an air guide ring is arranged on the right side of the impeller, symmetrical screw holes are formed in the air guide ring, and a plurality of screws are connected to the left side of each screw hole in a threaded mode.

Furthermore, the outer ends of the end cover and the sleeve are respectively provided with a bearing groove, a ball bearing is arranged in the bearing groove, and the end cover and the sleeve are rotationally connected with the motor shaft through the ball bearing.

Furthermore, an insulating sleeve is arranged at the connecting end of the power line and the copper wire winding.

Furthermore, the end cover is fixedly connected with the air guide ring through a screw.

Further, a gasket is arranged in the bearing groove and is in sleeve joint with the motor shaft.

Furthermore, a bearing groove at the outer end of the end cover is internally provided with an elastic check ring for a shaft, a clamp spring groove is arranged on the motor shaft corresponding to the elastic check ring for the shaft, and the clamp spring groove is clamped with the elastic check ring for the shaft.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses the brushless motor of turning outward that sets up can raise the efficiency, only needs former motor half size ratio just can realize more superior spraying effect, realizes more superior performance under the volume ratio of minimum, saves instrument complete machine space and material cost, simultaneously because of no carbon brush switching-over structure, can not produce spark, dust, can improve life, and is safer environmental protection more, and has reduced complete machine structure space, save material cost, makes things convenient for the customer to carry and keeps.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the rotor assembly of the present invention;

fig. 3 is an exploded view of the rotor assembly of the present invention;

fig. 4 is a schematic structural view of the stator assembly of the present invention;

fig. 5 is an exploded view of the stator assembly of the present invention;

fig. 6 is an exploded schematic view of the air guide assembly of the present invention;

fig. 7 is the assembly schematic diagram of the rotor assembly and the stator assembly of the present invention

Fig. 8 is a cross-sectional view of the present invention;

fig. 9 is a right side schematic view of the present invention;

fig. 10 is a left side schematic view of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a rotor assembly; 101. a front cover; 102. a motor shaft; 103. an iron shell; 104. a set screw is fastened at the flat end of the inner hexagon; 105. a magnet; 106. a magnet slot; 2. a stator assembly; 201. an end cap; 202. an outer rotor stator core; 203. a copper wire winding; 204. a power line; 205. a ball bearing; 206. an insulating sleeve; 3. an air guide assembly; 301. an air guide fan cover; 302. an impeller; 303. a wind guide ring; 304. a screw; 4. a gasket; 5. circlip for shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-10, the present invention provides a technical solution: a high-efficiency brushless external rotor motor comprises a rotor assembly 1, a stator assembly 2 and an air guide assembly 3, wherein the air guide assembly 3 and the rotor assembly 1 are respectively positioned at the left side and the right side of the stator assembly 2, the rotor assembly 1 comprises a front cover 101, a motor shaft 102 is arranged in the middle of the front cover 101, the motor shaft 102 extends towards the left side, a hexagon socket flat end set screw 104 is arranged at the joint of the front cover 101 and the motor shaft 102, the motor shaft 102 is fixedly connected with the front cover 101 through the hexagon socket flat end set screw 104, a cylindrical iron shell 103 is arranged at the left side of the front cover 101, the iron shell 103 is fixedly bonded with the front cover 101 through interference fit of anaerobic adhesive, a plurality of magnet slots 106 are uniformly arranged at the left side of the front cover 101 along the circumferential direction, a plurality of magnets 105 are uniformly arranged at the inner side of the iron shell 103 along the circumferential direction, the magnets 105 are fixedly bonded with the inner wall of the iron shell 103, during the installation with magnet 105 along the inboard magnet groove 106 interior bonding that pushes away the correspondence of iron-clad, stator module 2 includes end cover 201, the left end face of end cover 201 evenly is equipped with a plurality of screws, screw and screw 304 phase-match, can be with end cover 201 and air guide component 3 fixed connection through screw 304, and the right-hand member of end cover 201 is fixed with the sleeve pipe, the right side of end cover 201 is equipped with outer rotor stator core 202, outer rotor stator core 202 evenly is equipped with a plurality of stator slots along the circumferencial direction, the winding is fixed with copper wire winding 203 in the stator slot, copper wire winding 203's right side is connected with power cord 204, the sleeve pipe stretch into in copper wire winding 203 and with copper wire winding 203 fixed connection, outer rotor stator core 202 and copper wire winding 203 all are located iron.

The air guide assembly 3 comprises an air guide fan housing 301, an impeller 302 is arranged on the right side of the air guide fan housing 301, an air guide ring 303 is arranged on the right side of the impeller 302, symmetrical screw holes are formed in the air guide ring 303, a plurality of screws 304 are screwed on the left side of the screw holes, and the air guide ring 303 is fixedly connected with the end cover 201 through the screws 304.

The end cover 201 and the outer end of the sleeve are provided with bearing grooves, the ball bearings 205 are arranged in the bearing grooves, and the end cover 201 and the sleeve are rotatably connected with the motor shaft 102 through the ball bearings 205.

The connection end of the power line 204 and the copper wire winding 203 is provided with an insulating sleeve 206, and the insulating sleeve 206 can play a good insulating role.

The end cap 201 is fixedly connected with the wind guiding ring 303 through a screw 304.

A gasket 4 is arranged in the bearing groove, and the gasket 4 is sleeved with the motor shaft 102.

A bearing groove at the outer end of the end cover 201 is internally provided with a shaft elastic check ring 5, a clamp spring groove is arranged on the motor shaft 102 corresponding to the position of the shaft elastic check ring 5, and the clamp spring groove is clamped with the shaft elastic check ring 5.

The utility model is suitable for an electric spray gun, the flush coater, the spray gun, fields such as dust catcher, when the installation, embolia gasket 4 on motor shaft 102 in rotor subassembly 1, then pack into stator module 2 in iron-clad 103, the sleeve pipe cup joints with motor shaft 102, stator module 2 packs into and accomplishes the back, pack into gasket 4 again at the left end of motor shaft 102, embolia axle circlip 5 in the outside of gasket 4, axle circlip 5 and the last jump ring groove joint of motor shaft 102, can be so that ball bearing 205 and stator module 2 remain stable through axle circlip 5 and two gasket 4, then through screw 304 with air guide component 3 and end cover 201 fixed connection.

One specific application of this embodiment is: there is copper wire winding 203 on the stator module 2 of motor, there is magnet 105 on the rotor subassembly 1, there is impeller 302 above the air guide component, utilize the circular telegram of every copper wire winding 203 of direct current brushless motor driver control, make the magnetic field change of copper wire winding 203 production, with the magnetic field interact who has magnet 105 on the rotor subassembly 1, thereby constantly drive rotor subassembly 1 rotatory, motor shaft 102 drives the rotatory rotation of impeller 302 of air guide component 3, thereby obtain the required amount of wind pressure of complete machine instrument.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not exhaustive and do not limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a brushless external rotor electric machine of high efficiency, includes rotor subassembly (1), stator module (2) and wind-guiding component (3), its characterized in that: the wind guide assembly (3) and the rotor assembly (1) are respectively located on the left side and the right side of the stator assembly (2), the rotor assembly (1) comprises a front cover (101), a motor shaft (102) is arranged in the middle of the front cover (101), the motor shaft (102) extends towards the left side, an inner hexagonal flat end set screw (104) is arranged at the joint of the front cover (101) and the motor shaft (102), the motor shaft (102) is fixedly connected with the front cover (101) through the inner hexagonal flat end set screw (104), a cylindrical iron shell (103) is arranged on the left side of the front cover (101), the iron shell (103) is fixedly bonded with the front cover (101) in an interference fit manner through anaerobic adhesive, a plurality of magnet grooves (106) are uniformly formed in the left side of the front cover (101) along the circumferential direction, a plurality of magnets (105) are uniformly arranged on the inner side of the iron shell (103) along the circumferential direction, and the magnets (105) are fixedly bonded with the inner wall of the iron shell (103) through magnet, and the right-hand member of magnet (105) and magnet groove (106) fixed bonding, stator module (2) are including end cover (201), the left end face of end cover (201) evenly is equipped with a plurality of screw, and the right-hand member of end cover (201) is fixed with the sleeve pipe, the right side of end cover (201) is equipped with outer rotor stator core (202), outer rotor stator core (202) evenly is equipped with a plurality of stator grooves along the circumferencial direction, and the stator inslot coiling is fixed with copper wire winding (203), and the right side of copper wire winding (203) is connected with power cord (204), the sleeve pipe stretch into in copper wire winding (203) and with copper wire winding (203) fixed connection, outer rotor stator core (202) and copper wire winding (203) all are located iron-clad (103).

2. A high efficiency brushless external rotor electric machine as recited in claim 1, wherein: the wind guide assembly (3) comprises a wind guide fan cover (301), an impeller (302) is arranged on the right side of the wind guide fan cover (301), a wind guide ring (303) is arranged on the right side of the impeller (302), symmetrical screw holes are formed in the wind guide ring (303), and a plurality of screws (304) are screwed on the left side of each screw hole.

3. A high-efficiency brushless external rotor motor as recited in claim 2, wherein: and bearing grooves are formed in the outer ends of the end cover (201) and the outer end of the sleeve, a ball bearing (205) is arranged in each bearing groove, and the end cover (201) and the sleeve are rotatably connected with the motor shaft (102) through the ball bearing (205).

4. A high efficiency brushless external rotor electric machine as recited in claim 3, wherein: and an insulating sleeve (206) is arranged at the connecting end of the power line (204) and the copper wire winding (203).

5. A high efficiency brushless external rotor electric machine as recited in claim 3, wherein: the end cover (201) is fixedly connected with the air guide ring (303) through a screw (304).

6. A high efficiency brushless external rotor electric machine as recited in claim 3, wherein: a gasket (4) is arranged in the bearing groove, and the gasket (4) is sleeved with the motor shaft (102).

7. A high efficiency brushless external rotor electric machine as recited in claim 3, wherein: the bearing groove of end cover (201) outer end is equipped with axle circlip (5), the position that corresponds axle circlip (5) on motor shaft (102) is equipped with the jump ring groove, and the jump ring groove is with axle circlip (5) joint.