CN218335561U

CN218335561U - Low-speed large-torque output outer rotor brushless motor

Info

Publication number: CN218335561U
Application number: CN202222355253.3U
Authority: CN
Inventors: 章小青; 吴国伟; 杨玉云
Original assignee: Wuxi Honghu Motor Co ltd
Current assignee: Wuxi Honghu Motor Co ltd
Priority date: 2022-09-05
Filing date: 2022-09-05
Publication date: 2023-01-17
Anticipated expiration: 2032-09-05

Abstract

The utility model discloses a big torque output's of low-speed external rotor brushless motor belongs to the brushless motor field, including the stator, the stator cover is established in the pivot, and is provided with the stabilizing component outside the stator, is provided with the magnetic stone strip on the stabilizing component, is provided with the rotor on the magnetic stone strip, and rotor one side is provided with the front end housing, and the rotor opposite side is provided with the rear end housing, is provided with the fixed subassembly of heat dissipation dust removal on front end housing and the rear end housing, is provided with the bearing housing on the fixed subassembly, and the bearing housing is established in the pivot. The device can guarantee that the rotor operation is stable, can reach the effect of heat dissipation and dust removal simultaneously.

Description

Low-speed large-torque output outer rotor brushless motor

Technical Field

The utility model relates to a brushless motor technical field specifically is an outer rotor brushless motor of low-speed big torque output.

Background

The brushless motor is composed of a motor main body and a driver, and is a typical electromechanical integration product. Because the brushless motor runs 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 variable frequency speed regulation, and oscillation and step loss can not be generated when the load suddenly changes, the outer rotor brushless motor has the advantages of small size, high efficiency, simple structure, strong manufacturability and the like, the diameter of the domestic conventional outer rotor brushless motor is 67mm and 50mm at the present stage, the number of stator slots S =12, the number of poles 2P =8/10/14/16 and the like, and because the rotating speed of the brushless motor adopted by a conveying line and a stereoscopic warehouse thereof is only 300-1000 rpm, in order to realize low-speed large torque, the number of poles of the rotor is increased, and along with the increase of the number of the poles of the rotor, the running performance of the motor is stable, the frequency of Hall feedback signals is improved, and the control precision is correspondingly improved.

Through retrieval, chinese patent No. CN208508756U discloses a high-efficiency direct-drive external rotor brushless motor, through the arrangement of a first cylindrical roller bearing, the outer sleeve of the first cylindrical roller bearing is hinged with the bottom end of the inner side wall of the motor body, the inner sleeve of the first cylindrical roller bearing is welded with a fixed block, and the bottom of the motor body is close to the top of the base, so that friction and mechanical collision between the motor body and the base as well as internal components of the motor are reduced, negative work between the motor body and the base as well as the internal components of the motor is reduced, kinetic energy lost during rotation of the motor is reduced, the motor works more efficiently, but the adoption of the cylindrical roller bearing can isolate magnetic stripe magnetism, cause insufficient power, and simultaneously can not achieve the problems of heat dissipation and dust entering into the stator.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an outer rotor brushless motor of big torque output of low-speed 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: the utility model provides a big torque output's of low-speed external rotor brushless motor, includes the stator, the stator cover is established in the pivot, just the stator outside is provided with stabilizing assembly, stabilizing assembly is last to be provided with the magnetic stone strip, be provided with the rotor on the magnetic stone strip, rotor one side is provided with the front end housing, just the rotor opposite side is provided with the rear end cap, the front end housing with be provided with the fixed subassembly of heat dissipation dust removal on the rear end cap, be provided with the bearing housing on the fixed subassembly of heat dissipation dust removal, the bearing housing cover is established in the pivot.

Preferably, the stabilizing assembly comprises a stabilizing sleeve and balls, the stabilizing sleeve is arranged between the rotor and the stator, a magnet bearing groove is formed in the middle of the stabilizing sleeve, a magnet strip is arranged in the magnet bearing groove, a ball groove is formed in the inner side of the stabilizing sleeve and the outer side of the stator, and the ball groove is matched with the balls.

Through the scheme, the following technical effects can be achieved: the pivot drives the rotor and rotates, the rotor drives the magnetite strip that the magnetite bore the weight of the inslot in the pivoted and makes the stabilizer sleeve rotate, when the stabilizer sleeve rotates, make the ball can fix and rotate through the ball groove, then make the ball on the ball groove rotate on the stator, thereby guarantee that the rotor can not with stator surface friction when the pivoted, thereby guarantee that power is sufficient, be provided with the magnetite simultaneously in the stabilizer sleeve and bore the weight of the groove, can not let the magnetism of magnetite weaken, thereby can make the better rotation of rotor.

Preferably, the surface of the ball is provided with a sound attenuation layer.

Through the scheme, the following technical effects can be achieved: the noise is reduced when the balls rotate through the noise reduction layer.

Preferably, the heat dissipation and dust removal fixing component comprises a fixing air inducing rod and a filter screen, one end of the fixing air inducing rod is connected with the inner wall of the through hole, one end of the fixing air inducing rod is connected with the bearing sleeve, the through hole is formed in the front end cover, and the filter screen is arranged on the through hole.

Through the scheme, the following technical effects can be achieved: when the pivot rotated, drive the bearing housing and make fixed induced draft pole drive the front end housing and rotate to the front end housing drives the rotor and rotates, makes the steady operation, drives the air flow when fixed induced draft pole pivoted, thereby makes the heat of production discharge in the through-hole, and the filter screen can prevent that external dust from getting into in the stator.

Preferably, the through-hole has a sectional area larger than that of the stator.

Through the scheme, the following technical effects can be achieved: the heat generated by the stator can enter the through hole, so that the heat dissipation effect is improved.

Preferably, the fixed air guide rods are provided with a plurality of fixed air guide rod arrays which are arranged outside the bearing sleeve.

Through the scheme, the following technical effects can be achieved: the fixed induced draft pole makes the air flow speed accelerate when rotating, provides the holding power when receiving outside striking simultaneously, can make the rotor operate steadily.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses in, the pivot drives the rotor and rotates, the rotor drives the magnetite strip of magnetite bearing groove in the pivoted and makes the stabilizer sleeve rotate, in the time of stabilizer sleeve rotation, make the ball can fix and rotate through the ball groove, then make the ball on the ball groove rotate on the stator, thereby guarantee that the rotor can not with stator surface friction when the pivoted, thereby guarantee that power is sufficient, be provided with the magnetite bearing groove in the stabilizer sleeve simultaneously, can not let the magnetism of magnetite weaken, can make the better rotation of rotor, make the ball in the pivoted time through the noise damping layer, the effect of noise abatement.

2. The utility model discloses in, when pivot pivoted, it makes fixed induced draft pole drive the front end housing and rotates to drive the bearing housing, thereby the front end housing drives the rotor and rotates, make the operation steady, it flows to drive the air when fixed induced draft pole pivoted, thereby make the heat that produces discharge from the through-hole, the filter screen can prevent in external dust gets into the stator, simultaneously can make in the heat entering through-hole that the stator produced, thereby make radiating effect improve, make the air flow speed accelerate when a plurality of fixed induced draft poles pivoted, provide the holding power when receiving outside striking simultaneously, can make the rotor operate steadily.

Drawings

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

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

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;

FIG. 4 is a schematic structural view of the middle stabilizer sleeve of the present invention;

fig. 5 is a schematic structural view of the middle fixed air inducing rod of the present invention.

In the figure: 1. a stator; 101. a rotating shaft; 102. a magnet strip; 103. a rotor; 104. a front end cover; 105. a rear end cap; 106. a bearing housing; 107. a stabilizing sleeve; 108. a ball bearing; 109. a magnet bearing groove; 110. a ball groove; 112. fixing the air inducing rod; 113. a filter screen; 114. and a through hole.

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1:

please refer to fig. 1-5, the utility model provides an outer rotor brushless motor of big torque output of low-speed, including stator 1, stator 1 cover is established on pivot 101, and the stator 1 outside is provided with stabilizing assembly, stabilizing assembly is last to be provided with magnet strip 102, be provided with rotor 103 on the magnet strip 102, rotor 103 one side is provided with front end housing 104, and the rotor 103 opposite side is provided with rear end housing 105, be provided with the fixed subassembly of heat dissipation dust removal on front end housing 104 and the rear end housing 105, be provided with bearing housing 106 on the fixed subassembly of heat dissipation dust removal, bearing housing 106 cover is established on pivot 101, stabilizing assembly includes stabilizing sleeve 107 and ball 108, stabilizing sleeve 107 sets up between rotor 103 and stator 1, stabilizing sleeve 107 middle part has seted up magnetite bearing groove 109, be provided with magnet strip 102 in the magnetite bearing groove 109, ball groove 110 has all been seted up in stabilizing sleeve 107 inboard and the stator 1 outside, ball groove 110 and ball 108 phase-match, ball 108 surface is provided with the noise damping layer.

Specifically, pivot 101 drives rotor 103 and rotates, rotor 103 drives the magnetite strip 102 in the magnetite bearing groove 109 and makes stable cover 107 rotate when the pivoted, when stable cover 107 rotates, make ball 108 can fix and rotate through ball groove 110, then make ball 108 on ball groove 110 rotate on stator 1, thereby guarantee that rotor 103 can not with stator 1 surface friction when the pivoted, guarantee that power is sufficient, be provided with magnetite bearing groove 109 in stable cover 107 simultaneously, can not let the magnetism of magnetite strip 102 weaken, thereby can make the better rotation of rotor 103, make ball 108 in the pivoted time through the noise damping layer, the effect of noise abatement.

Example 2:

the utility model provides a big torque output's of low-speed external rotor brushless motor, including stator 1, stator 1 cover is established on pivot 101, and the stator 1 outside is provided with stabilizing assembly, stabilizing assembly is last to be provided with magnetic stone strip 102, be provided with rotor 103 on the magnetic stone strip 102, rotor 103 one side is provided with front end housing 104, and the rotor 103 opposite side is provided with rear end housing 105, be provided with heat dissipation and dust removal fixed subassembly on front end housing 104 and the rear end housing 105, be provided with bearing housing 106 on the heat dissipation and dust removal fixed subassembly, bearing housing 106 cover is established on pivot 101, heat dissipation and dust removal fixed subassembly includes fixed induced air pole 112 and filter screen 113, fixed induced air pole 112 one end and through-hole 114 wall connection, and fixed induced air pole 112 one end is connected with bearing housing 106, through-hole 114 is seted up on front end housing 104, and be provided with filter screen 113 on through-hole 114, the sectional area of through-hole 114 is greater than the sectional area of stator 1, fixed induced air pole 112 is provided with a plurality ofly, a plurality of fixed induced air pole 112 arrays set up in the bearing housing 106 outside.

Specifically, when pivot 101 rotates, it makes fixed induced draft pole 112 drive front end housing 104 and rotates to drive bearing housing 106, thereby front end housing 104 drives rotor 103 and rotates, make the operation steady, it flows to drive the air when fixed induced draft pole 112 rotates, thereby the heat that makes the production is discharged from through-hole 114, filter screen 113 can prevent in external dust gets into the stator, make the air flow speed accelerate when a plurality of fixed induced draft poles 112 rotate, provide the holding power when receiving outside striking simultaneously, can make rotor 103 operate steadily.

The working principle is as follows: the rotating shaft 101 drives the rotor 103 to rotate, the rotor 103 drives the magnet strips 102 in the magnet bearing grooves 109 to rotate so that the stabilizing sleeve 107 rotates when the rotor 103 rotates, when the stabilizing sleeve 107 rotates, the balls 108 can be fixed and rotate through the ball grooves 110, then the balls 108 on the ball grooves 110 rotate on the stator 1, thereby ensuring that the rotor 103 cannot rub with the surface of the stator 1 when the rotor 103 rotates, so that sufficient power is ensured, meanwhile, the magnet bearing grooves 109 are arranged in the stabilizing sleeve 107, the magnetism of the magnet strips 102 cannot be weakened, thereby enabling the rotor 103 to rotate better, the balls 108 rotate through the sound attenuation layer, the noise reduction effect is achieved, when the rotating shaft 101 rotates, the bearing sleeves 106 are driven to enable the fixed air guide rods 112 to drive the front end cover 104 to rotate, thereby the front end cover 104 drives the rotor 103 to rotate, so that the operation is stable, when the fixed air guide rods 112 rotate, the air is driven to flow, thereby enabling the generated heat to be discharged from the through holes 114, then, when external dust can be prevented from entering the stator through the filter screen 113, when the fixed air guide rods 112 rotate, the stable operation speed is increased, and the supporting force can be provided when the rotor 103 is accelerated when the air is operated, and the external impact is provided.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a big torque output's of low-speed external rotor brushless motor, includes stator (1), its characterized in that: stator (1) cover is established on pivot (101), just stator (1) outside is provided with stabilizing assembly, stabilizing assembly is last to be provided with magnet strip (102), be provided with rotor (103) on magnet strip (102), rotor (103) one side is provided with front end housing (104), just rotor (103) opposite side is provided with rear end housing (105), front end housing (104) with be provided with the fixed subassembly of heat dissipation dust removal on rear end housing (105), be provided with bearing housing (106) on the fixed subassembly of heat dissipation dust removal, bearing housing (106) cover is established on pivot (101).

2. A low-speed high-torque-output outer rotor brushless motor according to claim 1, wherein: the stabilizing assembly comprises a stabilizing sleeve (107) and balls (108), the stabilizing sleeve (107) is arranged between the rotor (103) and the stator (1), a magnet bearing groove (109) is formed in the middle of the stabilizing sleeve (107), the magnet bearing groove (109) is internally provided with the magnet strip (102), the inner side of the stabilizing sleeve (107) and the outer side of the stator (1) are both provided with ball grooves (110), and the ball grooves (110) are matched with the balls (108).

3. A low-speed high-torque-output outer rotor brushless motor according to claim 2, characterized in that: the surface of the ball (108) is provided with a sound attenuation layer.

4. A low-speed high-torque-output outer rotor brushless motor according to claim 1, wherein: fixed subassembly of heat dissipation dust removal is including fixed air guide rod (112) and filter screen (113), fixed air guide rod (112) one end and through-hole (114) inner wall connection, just fixed air guide rod (112) one end with bearing housing (106) are connected, through-hole (114) are seted up on front end housing (104), just be provided with on through-hole (114) filter screen (113).

5. The external rotor brushless motor of claim 4, wherein: the cross-sectional area of the through hole (114) is larger than that of the stator (1).

6. The external rotor brushless motor of claim 4, wherein: the number of the fixed air guide rods (112) is multiple, and the fixed air guide rods (112) are arranged on the outer side of the bearing sleeve (106) in an array mode.