CN103166410B - Brush motor and fan assembly - Google Patents
Brush motor and fan assembly Download PDFInfo
- Publication number
- CN103166410B CN103166410B CN201110412198.0A CN201110412198A CN103166410B CN 103166410 B CN103166410 B CN 103166410B CN 201110412198 A CN201110412198 A CN 201110412198A CN 103166410 B CN103166410 B CN 103166410B
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- Prior art keywords
- brush
- stator
- motor
- rotor
- commutator segment
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Abstract
The open a kind of brush motor of the present invention and fan assembly.Described brush motor, including stator and rotor, rotor includes rotating shaft, it is fixed to diverter and the rotor magnetic core of rotating shaft, stator includes stator core and some phase windings, diverter includes a conductive part and some spaced commutator segments, commutator segment electrically connects with conductive part, rotor magnetic core includes circumferential body portion and some that protrude and relative with winding salient poles from main part, an accommodation space is formed in main part, stator includes the first brush and some second brushes, one end of first brush is for being connected with extraneous power supply, the other end and conductive part sliding contact, one end of each second brush is connected with a corresponding windings, the other end and commutator segment sliding contact, diverter and first and second brush are contained in described accommodation space.The motor axial dimension of the present invention is compacter, and rotor is provided without Magnet, so that rotor technique is simple, low cost and firm in structure, high temperature resistant, vibration resistance, impact resistance, is particularly suitable for application in vehicle.
Description
Technical field
The present invention relates to platypelloid type brush motor, be particularly suited for vehicle motor cooling fan.
Background technology
When gasoline burns in electromotor, the energy conversion of the most only 1/3rd becomes power, additionally
1/3rd are expelled directly out by exhaustor, and remaining 1/3rd are transformed into heat energy.Engine-cooling system
Function be exactly take away engine internal fuel because of burning produce excess enthalpy heat, keep electromotor most effective
At a temperature of work.
In vehicle motor cooling system, the axial dimension of cooling fan motor is a crucial ginseng
Number, it is often desirable that on the premise of motor can require meeting pre-determined characteristics, have the least axial
Size.
It is desirable to provide a kind of overall compact flat brush motor of axial dimension.
Summary of the invention
The one side of the embodiment of the present invention provides a kind of brush motor, including stator and be installed in stator
Rotor, described rotor includes rotating shaft, the diverter being fixed to rotating shaft and rotor magnetic core, and described stator includes
Stator core and the winding being set around on stator core, described diverter include a conductive part and some mutually
The commutator segment at interval, described commutator segment electrically connects with conductive part, and described rotor magnetic core includes circumferential body portion
And several that radially protrude from main part and the salient pole relative with winding, shapes in described main part
An accommodation space, described stator is become to include the first brush and some second brushes, the one of described first brush
End for being connected with extraneous power supply, the other end and conductive part sliding contact, one end of described second brush and
Winding connects, and the other end and commutator segment sliding contact, described diverter and the first brush and the second brush are extremely
Small part is contained in described accommodation space.
Preferably, the number of described commutator segment is equal to rotor with salient pole number.
Preferably, described second brush is curved.
Preferably, described diverter also includes some transition plates being located between adjacent commutator segment, transition plate
With conductive part electric insulation.
Preferably, described commutator segment is mutually perpendicular to conductive part.
Preferably, described rotor magnetic core is fixed to rotating shaft by an installing rack, and described installing rack includes a peace
Dress plate, described installing plate is positioned at an axial end of described accommodation space.
Preferably, described installing plate sets oblique air vent.
Preferably, described stator also includes that a brush installing plate, described first brush and the second brush are installed
In described brush installing plate, described brush installing plate is positioned at another axial end of described accommodation space, described
Brush installing plate sets air vent.
Preferably, described motor also includes the end cap being fixed to stator core two ends, and described end cap is vertically
If air vent.
Preferably, the stator winding number of phases of described motor is more than or equal to 3, and stator poles is the even number of the number of phases
Times, rotor number of poles=stator poles ± 2, each stator winding commutation rotation step angle=| (360 °/number of stator slots)-
(360 °/rotor number of poles) | mechanical angle, described each second brush is 0.6 step with the angle of flow of each commutator segment
Elongation～2 step angles, the position that each phase winding is initially powered up is that extremely middle this winding center line of alignment of rotor moves
Between dynamic phase difference 1 step angle～1.5 step angles.
The present invention also provides for a kind of fan assembly, including fan and motor, described fan include wheel hub, from
Some flabellums that wheel hub radially extends, described wheel hub includes substrate and the side axially extended from substrate
Plate, substrate and side plate define a receiving space, and described motor is contained in described receiving space, described base
Plate central authorities set installing hole and pass with the rotating shaft of power supply machine, and described motor is above-mentioned brush motor.
In illustrated embodiment of the present invention, brush is located in the accommodation space that ring-shaped core is formed, and can make motor
Axial dimension reduce, use arc brush ensure that the compact of radial structure and extend the use of brush
Life-span；Rotor installing plate is formed oblique through hole, brush powder can be guided to discharge as flow-guiding structure；
Increase diode spark suppression circuit, can effectively suppress the generation of commutation spark；Rotor is provided without Magnet,
So that rotor technique is simple, low cost and firm in structure, high temperature resistant, vibration resistance, impact resistance,
It is suitably applied in vehicle.
In order to be able to be further understood that inventive feature and technology contents, refer to below in connection with this
Bright detailed description and accompanying drawing, but institute's accompanying drawing only provides reference and explanation use, is not used for the present invention
It is any limitation as.
Accompanying drawing explanation
In accompanying drawing:
Fig. 1 is the schematic diagram of the vehicle motor cooling system radiator fan of one embodiment of the invention；
Fig. 2 show the fan motor of Fig. 1；
Fig. 3 is the schematic diagram after the motor in Fig. 2 removes an end cap and rotor installing rack；
Fig. 4 is the cross sectional representation of motor in Fig. 2；
Fig. 5 shows the diverter of motor in Fig. 2 and the position relationship schematic diagram of brush；
Fig. 6 is the cross-sectional schematic of Fig. 2, removes an end cap to clearly display internal structure in figure；
Fig. 7 show the spark of a kind of form that the motor of the present invention is used and eliminates circuit；
Fig. 8 show the another form of spark elimination circuit that the motor of the present invention is used.
Detailed description of the invention
Below in conjunction with the accompanying drawings, by the detailed description of the invention of the present invention is described in detail, will make the present invention's
Technical scheme and other beneficial effects are apparent.
Referring to Fig. 1 and Fig. 2, it is cold that the fan assembly of one embodiment of the invention is particularly suited for vehicle motor
But system, described fan assembly includes fan 10 and for driving the motor 20 of this fan.
Fan 10 includes wheel hub 11, the some flabellums 12 radially extended from wheel hub 11 and connects each flabellum
The outer shroud 13 of 12 ends.Wheel hub 11 includes substrate 14 and the side plate 15 axially extended from substrate 14, substrate
14 define, with side plate 15, the receiving space that can accommodate motor 20.Substrate 14 central authorities set installing hole 16 with power supply
The rotating shaft 52 of machine 20 passes.
Motor 20 is contained in described receiving space, and its front end is fixed to fan 10 by the outfan of rotating shaft 52
Installing hole 16.
Referring to Fig. 2, described motor 20 is brush motor, including stator 30, the rotor that is installed in stator
50 and be positioned at the end cap 70,72 at two ends.Some air vents 702,722 are set on described end cap 70,72,
So that internal structure of motor etc. by motor internal thus can be cooled down by the air-flow that fan 10 produces.
Refer to Fig. 3 and Fig. 4, described stator 30 include stator core 32 and be set around on stator core around
Group 34, described stator core 32 includes ring-shaped yoke portion and the teeth portion extended internally from yoke portion, described winding 34
It is set around in teeth portion.Described stator core 32 is fixed with two end cap 70,72 by modes such as screws 35.
Described stator 30 also includes the first brush 36 and some second brushes 38.
Described rotor 50 includes rotating shaft 52, the diverter 54 being fixed to rotating shaft 52 and rotor magnetic core 56.
Described rotor magnetic core 56 include circumferential body portion 562 and some from main part 562 outer peripheral face radially to
Outer protrusion and relative with winding 34 salient pole 564, forms an accommodation space 566 in circumferential body portion 562,
Described salient pole 564 is equally circumferentially spaced along rotor.
Referring to Fig. 5, described diverter 54 includes circular conductive portion 542 and some spaced commutator segments
544, described commutator segment 544 electrically connects with conductive part 542.One end of described first brush 36 is used for and the external world
Power supply connects, and the other end is used for and conductive part 542 sliding contact, one end of described second brush 38 and winding
34 connect, the other end and commutator segment 544 sliding contact.
Preferably, the number of described commutator segment 544 is equal to the number of rotor with salient pole 564.Described diverter is also
Including some transition plates 546 being made of metal being located between adjacent commutator segment 544, commutator segment 544 and mistake
Cross the circumferentially alternating setting of sheet 546 and be positioned on the same periphery concentric with rotating shaft 52, transition plate 546 with
Conductive part 542 and commutator segment 544 electric insulation.
Preferably, described second brush 38 is curved, and arc brush 38 can increase the effective length of brush,
Thus extend the service life of brush.Described arc brush 38 is installed in arc brush installing rack slidably
In 39, the bias terminal of end and a torque spring connects, thus provides biasing force to promote brush 38 and to change
Contact to device 54.
Referring to Fig. 6, described rotor magnetic core 56 is fixedly installed to rotating shaft 52, described installation by installing rack 58
Frame 58 includes installing plate 582 and from installing plate 582 centrally along axially extended shaft sleeve part 584, described shaft sleeve part
584 can be fixedly installed to rotating shaft 52 by friction tight mode.The main part 562 of described rotor magnetic core 56 leads to
Cross screw 563 etc. and be fixed to installing plate 582, thus fixing described rotor magnetic core 56 to rotating shaft 52 be allowed to can
Synchronous rotary.
See also Fig. 3 and Fig. 6, described diverter 54 and brush 36,38 and be contained in rotor magnetic core 56
In accommodation space 566, described installing plate 582 covers an axial end of described accommodation space 566, a brush peace
Dress plate 40 covers another axial end of described accommodation space 566, and described brush 36,38 is by brush installing rack
39 are installed on brush installing plate 40, and described brush installing plate 40 is fixed to end cap by modes such as screws 41
72。
Preferably, described rotor magnetic core installing plate 582 and brush installing plate 40 set some air vents 586,
402, in order to diverter 54 and brush 36,38 by internal rotor thus can be entered by the air-flow that fan 10 produces
Row cooling.
Preferably, described commutator segment 544 is perpendicular to conductive part 542, and specifically, described conductive part 542 is vertical
Rotating shaft 52 is arranged, and described commutator segment 544 parallel shaft 52 is arranged.
When, after switch conduction the first brush 36 with power supply, electric current passes through described first brush 36, conductive part
542, commutator segment 544 and the second brush 38 flow to every phase winding 34 in turn, thus produce rotating excitation field, turn
Sub-salient pole 564 rotates along a direction under the effect of rotating excitation field, after rotor rotates, and described second brush
38 in turn with the sliding contact of corresponding commutator segment 544, thus provide single polarity current to each phase winding 34 in turn
Excitation.
Refer to Fig. 7, it is preferable that described motor also includes spark suppression circuit, described spark suppression circuit
Including the transformator that is often coupled, it includes primary side winding and coupling winding 80, and stator winding 34 serves as former limit
Winding, primary side winding respectively connects 1 fly-wheel diode, it is preferable that one end of described coupling winding connects power supply
Negative pole, a diode of connecting between the other end with positive source, the energy produced during commutation can pass through coupling
Close winding 80 flow to power supply so that brush-commutated time produce spark be effectively suppressed.
Referring to Fig. 8, another form of spark suppression circuit includes that being connected to each second brush bears with power supply
Resistance between pole and audion, resistance connects the second brush and transistor base, and transistor collector is even
It is connected to one end away from brush of every phase winding and is connected to positive source by diode, sending out of audion
Emitter-base bandgap grading connects power cathode, is also serially connected with another diode between each second brush and power cathode, described
The positive pole of diode connects power cathode, and the negative pole of diode is connected to the second brush.
In the above-described embodiments, stator is provided with 6 teeth portion (also referred to as stator has 6 stator poles/grooves), often
Being tied with stator winding in individual teeth portion, described stator winding connects into 3 phases A, B, C (see Fig. 7, Fig. 8),
Rotor has 4 salient poles.
It is to be appreciated that the motor of the present invention can also is that 4 pole/8, phase/6 grooves i.e.: 4 phase windings, 6 rotors
Salient pole, 8 stator poles/grooves；5 pole/10, phase/8 grooves etc., i.e. the number of phases >=3, stator poles/groove number is the idol of the number of phases
Several times, rotor number of poles is equal to stator poles/groove number ± 2, each stator winding commutation rotate step angle=| (360 °/fixed
Pilot trench number)-(360 °/rotor number of poles) | the conducting of mechanical angle, described each second brush and each commutator segment
Angle is 0.6 step angle～2 step angles, the position that each phase winding is initially powered up be rotor extremely in alignment this around
Group center line moves between phase difference 1 step angle～1.5 step angles.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Any amendment, equivalent and the improvement etc. made within the spirit of invention and principle, should be included in this
Within the protection domain of invention.
Claims (12)
1. a brush motor, including stator and the rotor that is installed in stator, described rotor includes turning
Axle, the diverter being fixed to rotating shaft and rotor magnetic core, described stator includes stator core and is set around stator
Winding on magnetic core, it is characterised in that described diverter includes a conductive part and some spaced changing
To sheet, described commutator segment electrically connects with conductive part, described rotor magnetic core include circumferential body portion and several
That radially protrude from main part and relative with winding salient pole, forms one and houses in described main part
Space, described stator includes the first brush and the second brush, and one end of described first brush is used for and the external world
Power supply connects, and the other end and conductive part sliding contact, one end of described second brush is connected with winding, separately
One end and commutator segment sliding contact, described diverter and the first brush and the second brush are at least partially housed in
In described accommodation space.
Brush motor the most according to claim 1, it is characterised in that the number etc. of described commutator segment
In rotor with salient pole number.
Brush motor the most according to claim 1 and 2, it is characterised in that described second brush is arc
Shape, the second brush number is equal to the stator winding number of phases.
Brush motor the most according to claim 2, it is characterised in that if described diverter also includes
The dry transition plate being made of metal being located between adjacent commutator segment, described transition plate is with conductive part electricity absolutely
Edge.
Brush motor the most according to claim 2, it is characterised in that described commutator segment and conductive part
It is mutually perpendicular to.
Brush motor the most according to claim 2, it is characterised in that described rotor magnetic core passes through one
Installing rack is fixed to rotating shaft, and described installing rack includes that an installing plate, described installing plate are positioned at described accommodating sky
Between an axial end.
Brush motor the most according to claim 6, it is characterised in that described installing plate sets oblique logical
Air holes.
Brush motor the most according to claim 6, it is characterised in that described stator also includes an electricity
Brush installing plate, described first brush and the second brush are installed on described brush installing plate, the installation of described brush
Plate is positioned at another axial end of described accommodation space, and described brush installing plate sets air vent.
Brush motor the most according to claim 1, it is characterised in that described motor also includes fixing
To the end cap at stator core two ends, described end cap sets air vent vertically.
Brush motor the most according to claim 1, it is characterised in that described motor also includes carrying two
The spark suppression circuit of pole pipe.
11. brush motors according to claim 1, it is characterised in that the described stator winding number of phases is big
In equal to 3, stator poles is the even-multiple of the number of phases, rotor number of poles be equal to stator poles ± 2, each stator around
Group commutation rotates step angle=| (360 °/number of stator slots)-(360 °/rotor number of poles) | mechanical angle, and described each the
Two brushes are 0.6 step angle～2 step angles with the angle of flow of each commutator segment, the position that every phase winding is initially powered up
It is set to extremely middle this winding center line of alignment of rotor move between phase difference 1 step angle～1.5 step angles.
12. 1 kinds of fan assemblys, including fan and motor, described fan includes wheel hub, from wheel hub along footpath
To the some flabellums extended, described wheel hub includes substrate and the side plate axially extended from substrate, substrate with
Side plate defines a receiving space, and described motor is contained in described receiving space, and described substrate center sets peace
Dress hole passes with the rotating shaft of power supply machine, it is characterised in that described motor is any one of claim 1 to 11 institute
The brush motor stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110412198.0A CN103166410B (en) | 2011-12-12 | 2011-12-12 | Brush motor and fan assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110412198.0A CN103166410B (en) | 2011-12-12 | 2011-12-12 | Brush motor and fan assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103166410A CN103166410A (en) | 2013-06-19 |
| CN103166410B true CN103166410B (en) | 2016-10-05 |
Family
ID=48589217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110412198.0A Expired - Fee Related CN103166410B (en) | 2011-12-12 | 2011-12-12 | Brush motor and fan assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103166410B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016225984A1 (en) * | 2016-12-22 | 2018-06-28 | Robert Bosch Gmbh | Brush holder for an electric machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1268799A (en) * | 1999-03-24 | 2000-10-04 | 本田技研工业株式会社 | Starting and electric generating device for four stroke internal combustion engine |
| CN2572658Y (en) * | 2002-10-16 | 2003-09-10 | 涂翘甲 | Permanent dc low speed electric hub with static armature |
| CN1856926A (en) * | 2003-09-25 | 2006-11-01 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Direct-current motor with a rotationally fixed commutator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011010456A (en) * | 2009-06-25 | 2011-01-13 | Asmo Co Ltd | Dc motor |
-
2011
- 2011-12-12 CN CN201110412198.0A patent/CN103166410B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1268799A (en) * | 1999-03-24 | 2000-10-04 | 本田技研工业株式会社 | Starting and electric generating device for four stroke internal combustion engine |
| CN2572658Y (en) * | 2002-10-16 | 2003-09-10 | 涂翘甲 | Permanent dc low speed electric hub with static armature |
| CN1856926A (en) * | 2003-09-25 | 2006-11-01 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Direct-current motor with a rotationally fixed commutator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103166410A (en) | 2013-06-19 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161005 Termination date: 20201212 |
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| CF01 | Termination of patent right due to non-payment of annual fee |