CN201243252Y - Brushless DC motor - Google Patents
Brushless DC motor Download PDFInfo
- Publication number
- CN201243252Y CN201243252Y CNU2008201255173U CN200820125517U CN201243252Y CN 201243252 Y CN201243252 Y CN 201243252Y CN U2008201255173 U CNU2008201255173 U CN U2008201255173U CN 200820125517 U CN200820125517 U CN 200820125517U CN 201243252 Y CN201243252 Y CN 201243252Y
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- Prior art keywords
- stator
- insulating component
- motor
- brshless
- cap
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- Expired - Lifetime
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Abstract
The utility model provides a brushless DC motor, which comprises a stator, a rotor arranged in the stator, a circuit board for providing the brushless DC motor with an electric drive and control, and a cover containing the stator, the rotor and the circuit board; the stator includes a stator iron core, a plurality of stator windings, and an insulation body; and the stator also includes an insulation component arranged in the cover and in detachable connection with the cover; the stator iron core and the insulation body are arranged on a first side surface of the insulation component; and the circuit board is arranged on a second side surface of the insulation component. The brushless DC motor has the advantages that the inner components are reliably connected with each other, the structure is simple, and the motor has better insulation and seal functions.
Description
[technical field]
The utility model relates to a kind of brshless DC motor, relates in particular to a kind ofly by an insulating component motor internal assembly to be installed to brshless DC motor on its cap reliably.
[background technology]
Compressor in household appliances such as the refrigerating system, washing machine, electric fan etc. use motor to provide power drive for it usually.General brush motor switches the electric current of input coil usually by the mechanical system of commutator and brush, the rotating speed of this brush motor is relatively easily controlled, but the mechanical break-in of brush and commutator tends to accelerate the loss of electric machine, and makes a noise easily.Brshless DC motor is a kind of direct current machine that adopts electron rectifier to replace brush and commutator, it possesses the series of advantages such as simple in structure, reliable, easy to maintenance of alternating current machine, possesses the operational efficiency height of direct current machine, no excitation loss and good speed adjustment features again simultaneously, can avoid the generation of mechanicalness noise and many characteristics such as generation of electric noise simultaneously.Therefore, brshless DC motor is widely used in the every field that comprises household electrical appliance.Brshless DC motor commonly used mainly includes stator and rotor.Stator mainly comprises stator core cylindraceous, the stator winding of high strength enamelled wire coiled, and the insulator that is used for insulation stator iron core and stator winding.Rotor is columned permanent magnet, and it places the centre of stator and is separated by with its space.Stator winding on the stator is connected with external power source, and when external power source was connected, electric current on the stator winding produced magnetic field and attracts each other and repel mutually with magnetic field on the rotor permanent-magnet steel, drives rotor and rotates in stator thereby produce electromagnetic torque.The PCT patent application discloses has at length introduced a kind of brshless DC motor in WO2008027535 number, no longer give unnecessary details here.
In the prior art, stator is fixed to motor casing to cover and has multiple implementation, connecting portion can be set on cap realize the position of stator is limited, also can carry out support fixation to stator, perhaps directly stator is pressed in the cap and carry out bonding by add-on parts.Above-mentioned connected mode makes the cap structure too complicated or be not easy to the installation of stator, and is unfavorable for the stability and the reliability of stator long-time running.
Therefore, providing a kind of brshless DC motor, make that stator and other assembly such as the circuit board etc. in the motor can reliably be installed in the motor cap easily, really is that art technology is required.
[utility model content]
The purpose of this utility model provides a kind of brshless DC motor, utilize an insulating component with the stator of brshless DC motor with and circuit control panel reliably be installed in the cap of motor easily, make the assembly in this brshless DC motor connect reliable, has the good insulation function, and compact conformation, easy for installation.
The purpose of this utility model realizes by the following technical solutions:
A kind of brshless DC motor comprises: stator, and it comprises stator core with internal cavities, surrounds a plurality of stator winding on the stator core, and the insulator that is installed in stator core; Rotor is arranged in the internal cavities of stator, by electric current produced on the stator winding magnetic field and the interaction between the rotor field, drives rotor and rotates about it the axle rotation; Circuit board is in order to driven by power and the control that this brshless DC motor is provided; Cap, comprise loam cake and lower cover, in order to stator, rotor and circuit board are contained within it, and stator also comprises an insulating component further, it is arranged in the cap and with cap is detachable and links to each other, stator core and insulator are installed on first side of this insulating component, and circuit board is installed on second side of this insulating component.
A kind of brshless DC motor provided by the utility model, wherein stator winding surrounds on the common insulating surfaces that forms of insulator and insulating component, thereby with the stator core mutually insulated.
A kind of brshless DC motor provided by the utility model, wherein the center of insulating component and insulator is respectively equipped with and the corresponding cavity of the internal cavities of stator, makes rotor can rotate around it axle and rotates.
A kind of brshless DC motor provided by the utility model, wherein first side of insulating component around be provided with the upwards bayonet lock of dimpling, when insulating component is connected with cap, this insulating component is pressed between loam cake and the lower cover, and by the waterproof sealing between its sidewall realization loam cake and the lower cover, and by the location between this bayonet lock realization insulating component and the cap.
A kind of brshless DC motor provided by the utility model, wherein the edge of insulating component is provided with the connecting hole that can fixedly connected with cap.
A kind of brshless DC motor provided by the utility model, wherein second side of insulating component is provided with a plurality of support columns, and circuit board is installed on second side of insulating component by a plurality of support columns.
A kind of brshless DC motor provided by the utility model wherein also is provided with the latch of a plurality of mutually insulateds on second side of insulating component, it is used for electric connection between the stator winding lead and the electric connection between stator winding lead and the circuit board.
A kind of brshless DC motor provided by the utility model wherein also is respectively equipped with the introducing member that is used for the external power cord introducing on insulating component and the cap.
A kind of brshless DC motor provided by the utility model, wherein first side of insulating component be provided with stator core on the corresponding some projections of open slot, and also be provided with on each projection and be used for the open pore that stator winding holds.
A kind of brshless DC motor provided by the utility model, wherein also be provided with on second side of insulating component around its cavity and with the corresponding some insulating trips that raise up of the slice of cylinder of stator so that with described stator winding insulation surround on the stator core.
Than prior art, that brshless DC motor provided by the utility model connects is reliable, simplicity of design, have stability and insulation property preferably.
[description of drawings]
Fig. 1 is the explosive view of brshless DC motor of the present utility model.
Fig. 2 is the stereogram of the stator of the utility model brshless DC motor.
Fig. 3 is the stereogram of the stator core of the utility model brshless DC motor.
Fig. 4 is the stereogram at first visual angle of insulating component in the utility model brshless DC motor.
Fig. 5 is the stereogram at another visual angle of insulating component in the utility model brshless DC motor.
[embodiment]
Understand easily, according to the technical solution of the utility model, under the situation that does not change connotation of the present utility model, one of ordinary skill in the art can be found out the numerous embodiments of the utility model brshless DC motor.Therefore, following embodiment and accompanying drawing only are the exemplary illustrations to the technical solution of the utility model, and should not be considered as of the present utility model all or be considered as restriction or qualification to the technical solution of the utility model.
Fig. 1 is the structure explosive view of brshless DC motor of the present utility model.As shown in Figure 1, brshless DC motor of the present utility model mainly comprises cap 1, stator 2, rotor 3 and circuit board 4.Wherein cap 1 is divided into loam cake 11 and lower cover 12, is used to contain stator 2, rotor 3 and the circuit board 4 of brshless DC motor.Cap 1 can perhaps be an aluminum alloy casing for plastic housing covers, and it can form by injection moulding or die cast.The profile of cap 1 can design according to actual needs, can be designed as box body, also can be designed as cylindrically, and in an embodiment of the present utility model, the profile of this cap 1 is a box body.In a preferred embodiment of the present utility model, loam cake 11 and lower cover 12 four angles be provided with four connecting holes 13, be used for being connected and fixed between loam cake 11 and the lower cover 12.And, on the side of box body, be provided with the open pore 14 of the introducing that is used for power line, be used to brshless DC motor that electric power is provided.Be respectively equipped with two bearing pedestals 15 in the centre of loam cake 11 and lower cover 12,, make rotor 3 can be fixed in the cap 1 and can center on its axle center and rotate by on these two bearing pedestals 15, installing and fixing bearing.Please refer to Fig. 1, Fig. 2 and Fig. 3, the stator 2 of brshless DC motor of the present utility model comprises stator core 21, stator winding 22 and is used for SI semi-insulation stator core 21 and the insulator 23 of stator winding 22.Wherein stator core 21 is cylindric, preferably adopts the silicon steel sheet lamination to form, and it mainly includes outer iron core 211 and interior iron core 212.Wherein, interior iron core 212 comprises the slice of cylinder 213 of a plurality of mutual isolation, and a plurality of slice of cylinder 213 are mutually around the common cylindrical cavity structure that forms stator interior.In preferred embodiment of the present utility model, the slice of cylinder 213 of interior iron core 212 is 4, and be respectively equipped with four connection ribs 214 between the slice of cylinder 213 of outer iron core 211 and interior iron core 212, stator winding 22 insulate ground on this connection rib 214 by insulator 23 and following insulating component 5.Outer iron core 211, interior iron core 212 and connection rib 214 form four open slots 215.Correspondingly, in preferred embodiment of the present utility model, the winding quantity of stator winding 22 is 4 too.The enamelled wire of stator winding 22 for twining, it is generally made by special copper material.Insulator 23 is socketed on the stator core 21 by four open slots 215 and connection rib 214, is used for the insulation between stator core 21 and the stator winding 22.The structure of insulator 23 can design according to the actual size of iron core 21 and winding 22.Wherein further, the asymmetric uneven distribution of air gap between each slice of cylinder 213 and the rotor 3, the thickness of each slice of cylinder 213 is inhomogeneous relatively, and the air gap smaller part is thicker.This architecture advances the starting characteristic of brshless DC motor of the present utility model.That is to say that when brshless DC motor was not switched on running, the magnetic force that rotor 3 can not be parked in after stator 2 energisings did not have the position of torque to rotor 3 direction of rotation, but is parked in the position of predefined magnetic resistance minimum.
The structure of rotor 3 as shown in Figure 1, wherein, rotor 3 is located in the internal cavities of stator 2.And rotor 3 two ends are provided with projecting shaft, are used for by bearing rotor being fixed in the cap 1, make that rotor 3 can be around its central shaft rotation in the internal cavities of stator 2.Circuit board 4 is located in the cap 1, and and stator winding 22 between electrically connect, with thinking that brshless DC motor provides power and carries out corresponding energy supply and control.When making on the stator winding 22 circulating current by circuit board 4, can produce corresponding magnetic field on four slice of cylinder 213 of interior iron core 212, this magnetic field and rotor attract each other or repel mutually, thus the rotation of drive rotor 3 in the cavity of stator 2.Describe further about the stator in the brshless DC motor 2, rotor 3 and circuit board 4 functions, prior art has a detailed description to this, repeats no more herein.
Please refer to Fig. 2, Fig. 4 and Fig. 5, the stator 2 of brshless DC motor of the present utility model also includes an insulating component 5 further, is used for the assembly on the stator 2 is fixed in the cap 1 reliable and stablely.This insulating component 5 can adopt and insulator 23 identical materials manufacturings, also can adopt other insulating material manufacturing.The overall dimension of this insulating component 5 is corresponding with cap 1, and, on four angles of this insulating component 5, be provided with and cap connecting hole 13 corresponding four connecting holes 51, be used to realize being connected between insulating component 5 and the cap 1.At close wherein two connecting hole 51 places, also be provided with two holes (not shown), it is used for the ground connection between power line and cap and circuit board and the cap.The center of insulating component 5 is provided with corresponding with the cavity in the middle of the stator 2 and than its big slightly cavity 53, makes that four slice of cylinder, the 213 formed cavitys in the interior iron core 212 of stator core 21 can be inclusive in this cavity 53.And when insulating component 5 was connected with cap 1, this insulating component was pressed between loam cake 11 and the lower cover 12, and realized the loam cake 11 of cap 1 and the waterproof sealing between the lower cover 12 by the sidewall of insulating component 5.
Further, Fig. 4 is the three-dimensional view of first side of insulating component 5 of the present utility model, illustrates first side 56 of this insulating component 5.On first side 56, on around this insulating component 5, be provided with the upwards bayonet lock 561 of dimpling, when the loam cake 11 of cap 1 interconnected with lower cover 12, this bayonet lock 561 was snapped between loam cake 11 and the lower cover 12, to realize the location between cap 1 and the insulating component 5.First side 56 is inner be provided with corresponding with insulator 23, just, around the cavity 53 of insulating component 5, be provided with four mutually separations and with stator 2 on four open slots, 215 corresponding projections 562, and each projection 562 is provided with open pore 5621.This projection 562 with and on open pore 5621 corresponding with projection and open pore (not shown) on the insulator 23, be inserted into the two ends of four open slots 215 on the stator core 21 respectively by projection with insulating component 5 and insulator 23, can with stator core 21 insulation snap onto on this insulating component 5 and the insulator 23.And, by the respective openings (not shown) on open pore on the projection 562 5621 and the insulator 23, make the stator winding 22 of stator 2 can insulate on stator core 21.
Fig. 5 is the three-dimensional view of second side of insulating component 5 of the present utility model, illustrates second side 58 of this insulating component 5.Second side 58 of this insulating component 5 is used for fixing and installs the circuit board 4 of this brshless DC motor.Between the cavity 53 of insulating component 5 and four open pores 5621, be provided with four slice of cylinder, 213 corresponding four insulating trips 585 that raise up with stator 2, be used for described stator winding 22 holding on stator core 21.Be provided with four insulation connection ribs 586 of the connection rib 214 that is used to contain stator 2 between insulating trip 585 and the insulating component 5.On second side 58 of insulating component 5, also be provided with a plurality of support columns 581 that are used for positioning supports circuit board 4, its structure and quantity can design according to the practical structures of circuit board.Be provided with the latch 582 of insulation near cavity 53 places of this insulating component 5, be used for the electric connection of the lead of stator winding 22 itself.And the place, diagonal angle with respect to this latch 582 also is provided with latch 583, also is inserted with metal insert (not shown) in the latch 583, and it is used for the electric connection between stator winding 22 and the circuit board 4.In another embodiment of the present utility model, the lead on the stator winding 22 can directly be welded on the electric connection that realizes on the circuit board 4 between it.In an embodiment of the present utility model, also be provided with the introducing member (not shown) that is used for the external power cord introducing on this insulating component 5 further.
During installation, at first stator 2 and insulating component 5 are installed in advance, on a side of stator core 21, install insulator 23, and stator core 21 is snapped onto in first side 56 of insulating component 5 by the another side, the connection rib that stator winding 22 is centered on insulation is realized the insulation between stator winding 22 and the stator core 21 on stator 2 at this moment.Then rotor 3 is installed in advance, the spring bearing of rotor 3 is pressed on the projecting shaft of rotor 3, and installs rubber washer (not shown) simultaneously.Stator 2 is installed on the loam cake 11, and simultaneously rotor 3 is fixed in the cavity of stator 2, on another side of insulating component 5, install and fix circuit board 4, and connect corresponding lead-in wire and power line.At last, sealing loam cake 11 and lower cover 12.Understand easily, foregoing description and explanation only are the exemplary illustrations to brshless DC motor of the present utility model, according to the technical solution of the utility model, one of ordinary skill in the art can be made various modifications to it, as being connected between stator 2 and the insulating component 5 is made as other connected mode; Function and structure according to circuit board 4 can be carried out relative set further to insulating component 5; The cap 1 and the insulating component 5 of brshless DC motor of the present utility model are arranged at cylindrical structural etc.And do not changing under the connotation of the present utility model, for one of ordinary skill in the art, the conspicuous modifications and variations that the foregoing description is done are all within the protection range that the utility model claim is limited.
Brshless DC motor of the present utility model is fixed on its inner primary clustering on one insulating component 5, and fixedly connected realization stator 2, circuit board 4 fixing in the brushless dc engine housing by this insulating component 5 and motor cap 1, therefore, connect reliable between the assembly of brshless DC motor of the present utility model, simple in structure, have good insulation and sealing function.
Claims (10)
1. brshless DC motor comprises:
Stator, it comprises stator core with internal cavities, surrounds a plurality of stator winding on the stator core, and the insulator that is installed in stator core;
Rotor is arranged in the internal cavities of stator, by electric current produced on the stator winding magnetic field and the interaction between the rotor field, drives rotor and rotates about it the axle rotation;
Circuit board is in order to driven by power and the control that this brshless DC motor is provided;
Cap comprises loam cake and lower cover, in order within it with described stator, rotor and circuit board containing,
Wherein said stator also comprises an insulating component further, it is arranged in the described cap and with described cap is detachable and links to each other, described stator core and described insulator are installed on first side of this insulating component, and described circuit board is installed on second side of this insulating component.
2. brshless DC motor as claimed in claim 1 is characterized in that, described stator winding surrounds on the common insulating surfaces that forms of described insulator and described insulating component, thus with described stator core mutually insulated.
3. brshless DC motor as claimed in claim 1 is characterized in that, the center of described insulating component and described insulator is respectively equipped with and the corresponding cavity of the internal cavities of described stator, makes rotor can rotate around it axle and rotates.
4. brshless DC motor as claimed in claim 1, it is characterized in that, be provided with the upwards bayonet lock of dimpling around first side of described insulating component, when described insulating component is connected with described cap, described insulating component is pressed between described loam cake and the described lower cover, realize the waterproof sealing of described loam cake and described lower cover by its sidewall, and realize location between described insulating component and the described cap by described bayonet lock.
5. brshless DC motor as claimed in claim 4 is characterized in that, the edge of described insulating component is provided with the connecting hole that can fixedly connected with described cap.
6. brshless DC motor as claimed in claim 5 is characterized in that, described second side of described insulating component is provided with a plurality of support columns, and described circuit board is installed on described second side of described insulating component by described a plurality of support columns.
7. brshless DC motor as claimed in claim 6, it is characterized in that, also be provided with the latch of a plurality of mutually insulateds on described second side of described insulating component, it is used for electric connection between the described stator winding lead and the electric connection between stator winding lead and the circuit board.
8. brshless DC motor as claimed in claim 7 is characterized in that, also is respectively equipped with on described insulating component and the described cap to be used for the introducing member that external power cord is introduced.
9. brshless DC motor as claimed in claim 8 is characterized in that, first side of described insulating component be provided with stator core on the corresponding some projections of open slot, and also be provided with on each projection and be used for the open pore that stator winding holds.
10. brshless DC motor as claimed in claim 9, it is characterized in that, also be provided with on second side of described insulating component around its cavity and with the corresponding some insulating trips that raise up of the slice of cylinder of described stator so that with described stator winding insulation surround on the stator core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201255173U CN201243252Y (en) | 2008-06-30 | 2008-06-30 | Brushless DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201255173U CN201243252Y (en) | 2008-06-30 | 2008-06-30 | Brushless DC motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201243252Y true CN201243252Y (en) | 2009-05-20 |
Family
ID=40716545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201255173U Expired - Lifetime CN201243252Y (en) | 2008-06-30 | 2008-06-30 | Brushless DC motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201243252Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101621237B (en) * | 2008-06-30 | 2012-07-18 | 依必安派特风机(上海)有限公司 | Brushless DC motor |
| CN102593995A (en) * | 2012-03-14 | 2012-07-18 | 美的集团有限公司 | DC motor with insulation frame structure |
| CN105827059A (en) * | 2016-05-13 | 2016-08-03 | 陈浩骏 | Micro high-frequency vibration motor |
-
2008
- 2008-06-30 CN CNU2008201255173U patent/CN201243252Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101621237B (en) * | 2008-06-30 | 2012-07-18 | 依必安派特风机(上海)有限公司 | Brushless DC motor |
| CN102593995A (en) * | 2012-03-14 | 2012-07-18 | 美的集团有限公司 | DC motor with insulation frame structure |
| CN105827059A (en) * | 2016-05-13 | 2016-08-03 | 陈浩骏 | Micro high-frequency vibration motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090520 Effective date of abandoning: 20080630 |