CN102480191B

CN102480191B - DC (direct-current) brushless motor structure

Info

Publication number: CN102480191B
Application number: CN 201010577846
Authority: CN
Inventors: 刘永刚; 唐松发
Original assignee: Zhongshan Broad Ocean Motor Co Ltd
Current assignee: Zhongshan Broad Ocean Motor Co Ltd
Priority date: 2010-11-29
Filing date: 2010-11-29
Publication date: 2013-11-06
Anticipated expiration: 2030-11-29
Also published as: CN102480191A

Abstract

The invention discloses a DC (direct-current) brushless motor structure which comprises a motor body (1) and a controller (2). The DC brushless motor structure is characterized in that a fan heat radiator (3) is installed between the motor body (1) and the controller (2), and the fan heat radiator radiates heat for the motor body (1) and the controller (2). According to the invention, the fan heat radiator is added, the air flow on the surfaces of the motor body and the controller in accelerated, the heat radiation is accelerated, the heat radiation effect is good, the working temperature of the motor body and the controller is controlled effectively, and the fault rate is reduced greatly.

Description

A kind of DC brushless motor structure

Technical field:

The present invention relates to a kind of DC brushless motor structure.

Background technology:

Traditional a kind of DC brushless motor structure, generally comprise motor body and controller, motor body comprises stator module, rotor assembly, rotating shaft, front end housing, casing and rear end cap, front end housing and rear end cap are arranged on the two ends of casing, stator module, rotor assembly are arranged in casing, controller comprises box body, is arranged on control circuit board and the lid of box body the inside, usually motor body and controller are installed and are linked together, its heat radiation general expression is to open louvre on casing, perhaps the box body of controller adopts aluminum casting, accelerates the heat radiation of power electronic device.

But this heat radiation far can not be satisfied the real work of motor and require: 1) open louvre on casing, dust and rainwater easily enter, and cause electrical fault, and radiating effect is also undesirable, and working temperature is higher, and operation is disadvantageous to motor; 2) controller generally seals, and the box body contact power electronic device of depending merely on aluminum casting dispels the heat, and radiating effect is also undesirable, and often excess Temperature, break down.

Summary of the invention:

The purpose of this invention is to provide a kind of DC brushless motor structure, it increases fan radiator and accelerates motor body and the surperficial Air Flow of controller, accelerates heat radiation, good heat dissipation effect, can effectively control motor body and controller working temperature, failure rate reduces greatly.

The objective of the invention is to be achieved by following technical proposals.

A kind of DC brushless motor structure comprises motor body and controller, between motor body and controller, fan radiator is installed, and fan radiator dispels the heat to motor body and controller.

Fan radiator described above comprises outer cover and fan, motor body comprises stator module, rotor assembly, rotating shaft, front end housing, casing and rear end cap, front end housing and rear end cap are arranged on the two ends of casing, stator module, rotor assembly are arranged in casing, the rotating shaft afterbody that is arranged on rotor assembly extends to inside outer cover, and fan is arranged on the rotating shaft afterbody.

The end face of outer cover described above is with air inlet, and air inlet is towards the outer surface of casing.

Described controller described above comprises box body, is arranged on control circuit board and the lid of box body the inside, sets out the air port on described outer cover, and air outlet is towards the side surface of box body

The part outer rim that is covered with described above is protruded box body, and air outlet is arranged on the bottom of outer rim.

The outer surface of casing described above is protruding with some heat sink strips, forms guiding gutter between heat sink strip, and guiding gutter is communicated with air inlet.

Rear end cap described above periphery arranges through hole, and through hole is communicated with air inlet.

The end face of outer cover described above gets up by screw and rear end cap connection.

The inwall of outer cover described above stretches out some ribs, and rib is installed by screw and lid and coupled together.

Casing described above and box body are aluminum castings.

The present invention compared with prior art, has following effect: 1) between motor body and controller, fan radiator is installed, increase fan radiator and accelerate motor body and the surperficial Air Flow of controller, accelerate heat radiation, good heat dissipation effect, can effectively control motor body and controller working temperature, failure rate reduces greatly; 2) end face of outer cover is with air inlet, and air inlet is covered with the part outer rim and protrudes box body towards the outer surface of casing, and air outlet is arranged on the bottom of outer rim, and air outlet is towards the side surface of box body, and is simple and reasonable, implements easily; 3) outer surface of casing is protruding with some heat sink strips, forms guiding gutter between heat sink strip, and guiding gutter is communicated with air inlet, and heat sink strip can increase the outer surface area of dissipation of casing, accelerates heat radiation, reasonable in design; 4) the rear end cap periphery arranges through hole, and through hole is communicated with air inlet, cold air is introduced into forms guiding gutter between heat sink strip, then enter the air inlet of outer cover, has certain air conducting effect; 5) end face of outer cover gets up by screw and rear end cap connection, and the inwall of outer cover stretches out some ribs, and rib is installed by screw and lid and coupled together, and casing and box body are aluminum castings, and be simple and reasonable.

Description of drawings:

Fig. 1 is stereogram of the present invention.

Fig. 2 is exploded view of the present invention.

Fig. 3 is front view of the present invention.

Fig. 4 is the A-A cutaway view of Fig. 3.

Fig. 5 is the B-B cutaway view of Fig. 3.

Fig. 6 is the stereogram of fan housing of the present invention.

Embodiment:

Also the present invention is described in further detail by reference to the accompanying drawings below by specific embodiment.

as Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and shown in Figure 6, a kind of DC brushless motor structure, comprise motor body 1 and controller 2, between motor body 1 and controller 2, fan radiator 3 is installed, 3 pairs of motor bodies 1 of fan radiator and controller 2 dispel the heat, described fan radiator 3 comprises outer cover 31 and fan 32, motor body 1 comprises stator module 11, rotor assembly 12, rotating shaft 13, front end housing 14, casing 15 and rear end cap 16, front end housing 14 and rear end cap 16 are arranged on the two ends of casing 15, stator module 11, rotor assembly 12 is arranged in casing 15, be arranged on rotating shaft 13 afterbodys on rotor assembly 12 and extend to outer cover 31 the insides, fan 32 is arranged on rotating shaft 13 afterbodys, the end face of outer cover 31 is with air inlet 311, air inlet 311 is towards the outer surface of casing 15, described controller 2 comprises box body 21, be arranged on control circuit board 22 and the lid 23 of box body 21 the insides, set out air port 312 on described outer cover 31, air outlet 312 is towards the side surface of box body 21, described outer cover 31 has part outer rim 34 to protrude box body 21, air outlet 312 is arranged on the bottom of outer rim 34, the outer surface of casing 15 is protruding with some heat sink strips 151, form guiding gutter 152 between heat sink strip 151, guiding gutter 152 is communicated with air inlet 311, rear end cap 16 peripheries arrange through hole 161, through hole 161 is communicated with air inlet 311, the end face of outer cover 31 gets up by screw and rear end cap 16 connections, the inwall of outer cover 31 stretches out some ribs 33, rib 33 bottoms arrange screwed hole 35, install by screw and lid 23 and couple together, casing 15 is aluminum castings with box body 21.

operation principle of the present invention: the casing 15 of motor body 1 is aluminum castings with the box body 21 of controller 2, during machine operation, rotating shaft 13 high speed rotating, between motor body 1 and controller 2, fan radiator 3 being installed starts working, fan 32 rotates, cold air flows into through hole 33 and air inlet 311 along heat sink strip 151 and the guiding gutter 152 of the outer surface of casing 15, then blow to the side of box body 21 by air outlet 312, by cold air in casing 15 and the surperficial flow at high speed of box body 21, cast aluminium casing 15 and the heat that box body 21 absorbs are taken away rapidly, make motor a suitable temperature range job, the fault that minimizing causes because of excess Temperature, and motor body 1 and controller 2 are sealings, reduce the impact of dust and water droplet, improve reliability.

Claims

1. DC brushless motor structure, comprise motor body (1) and controller (2), between motor body (1) and controller (2), fan radiator (3) is installed, fan radiator (3) dispels the heat to motor body (1) and controller (2), described fan radiator (3) comprises outer cover (31) and fan (32), motor body (1) comprises stator module (11), rotor assembly (12), rotating shaft (13), front end housing (14), casing (15) and rear end cap (16), front end housing (14) and rear end cap (16) are arranged on the two ends of casing (15), stator module (11), rotor assembly (12) is arranged in casing (15), rotating shaft (13) afterbody that is arranged on rotor assembly (12) extends to inside outer cover (31), fan (32) is arranged on rotating shaft (13) afterbody, it is characterized in that: the end face of outer cover (31) is with air inlet (311), air inlet (311) is towards the outer surface of casing (15), described controller (2) comprises box body (21), be arranged on control circuit board (22) and the lid (23) of box body (21) the inside, set out air port (312) on described outer cover (31), air outlet (312) is towards the side surface of box body (21), described outer cover (31) has part outer rim (34) to protrude box body (21), air outlet (32) is arranged on the bottom of outer rim (34), the outer surface of casing (15) is protruding with some heat sink strips (151), form guiding gutter (152) between heat sink strip (151), guiding gutter (152) is communicated with air inlet (311).

2. a kind of DC brushless motor structure according to claim 1 is characterized in that: rear end cap (16) periphery arranges through hole (161), and through hole (161) is communicated with air inlet (311).

3. a kind of DC brushless motor structure according to claim 1 and 2, it is characterized in that: the end face of outer cover (31) is by screw and rear end cap (16) connection.

4. a kind of DC brushless motor structure according to claim 3, it is characterized in that: the inwall of outer cover (31) stretches out some ribs (33), and rib (33) is installed by screw and lid (23) and is coupled together.

5. a kind of DC brushless motor structure according to claim 3 is characterized in that: casing (15) is aluminum casting with box body (21).