CN102447367B

CN102447367B - Brush motor

Info

Publication number: CN102447367B
Application number: CN201010501220.4A
Authority: CN
Inventors: 刘力生; 刘宝廷; 方传惠; 关亮
Original assignee: GUANGDONG DECHANG MOTOR CO Ltd
Current assignee: Guangdong Dechang Motor Co.,Ltd.
Priority date: 2010-09-30
Filing date: 2010-09-30
Publication date: 2016-10-05
Anticipated expiration: 2030-09-30
Also published as: CN102447367A

Abstract

The present invention relates to a kind of brush motor, including stator and rotor, described rotor includes ring support, is fixed on the peripheral iron core of support and is fixed on the winding on surface unshakable in one's determination, described stator includes housing, the Magnet being fixed on housing and the brush assembly of electric that housing is fixing relatively, described brush assembly of electric includes some brushes, described Magnet is used for the commutation of winding towards winding, described brush with winding sliding contact.The motor of the present invention, every circle coil of winding is i.e. an element, has minimum commutating potential, thus has best commutation effect；Two interpolar parts numbers (number of turn) are more, are equivalent to commutator segment voltage the least, have the least electromotive force or pulsation of current；Eliminate diverter so that electric machine structure is simple, axial dimension is more compact, lightweight, low cost.

Description

Brush motor

Technical field

The present invention relates to a kind of brush motor.

Background technology

Motor has brush and brushless dividing.

Fig. 7 show the most general a kind of brush motor, and it includes stator and rotor.Rotor includes rotating shaft 11, (figure is not for the iron core 12 being fixed in rotating shaft 11 and diverter 13, the winding being wound on unshakable in one's determination 12 Show), winding electrically connects with diverter 13, unshakable in one's determination and be wound in winding thereon with diverter 13 along rotating shaft axle To being arranged side by side.Stator includes iron-clad 14, the Magnet 15 being fixed to iron-clad 14 inner surface, is fixed to stator Some carbon brush (not shown) of end cap, carbon brush is used for diverter sliding contact thus realizes commutation.

But, above-mentioned conventional brush motor, unshakable in one's determination and be wound in winding thereon with diverter 13 along turning Axle is axially arranged side by side, rotor axial longer dimension；And, diverter makes complexity, and cost is high, when During the adjacent commutator segment of same brush contact, cause two adjacent commutator segment short circuits, produce bigger commutation fire Flower.

It is desirable to provide a kind of novel brush motor.

Summary of the invention

The present invention provides a kind of brush motor, including stator and rotor, described rotor include ring-shaped core and Being fixed on the conductor on surface unshakable in one's determination, described stator includes housing, the Magnet being fixed on housing and relatively The brush assembly of electric that housing is fixing, described brush assembly of electric includes some brushes, and described Magnet is towards conductor, institute State brush for conductor sliding contact.

Preferably, described Magnet includes some along the circumferentially spaced magnetic pole of motor, between adjacent pole If gap, described brush is respectively arranged in corresponding gap.

Preferably, elastic device location between magnetic pole it is provided with in each gap.

Preferably, described housing sets some radial direction through hole and passes through for brush.

Preferably, described brush assembly of electric includes the fixing installing rack of relative housing, some is fixed to installing rack Brush box, described each brush carrier installs at the respective through hole of housing, and each brush is contained in a phase In the brush box answered.

Preferably, described stator also includes two end caps being individually secured to housing two ends, described installing rack quilt It is held on wherein between an end cap and the end of housing.

Preferably, described conductor is the winding being coiled into by the wire of tape insulation layer.

Preferably, described winding includes interior outer double-layer structure.

Preferably, described motor is inner-rotor-type, and described rotor also includes a ring support, described iron core It is fixed to the outer surface of described support.

Preferably, described motor is external-rotor-type, and described rotor also includes a ring support, described iron core It is fixed to the inner surface of described support.

Illustrated embodiment of the present invention has the advantages that every circle coil of winding is an element, There is minimum commutating potential, thus there is best commutation effect；Two interpolar parts numbers (number of turn) are more, It is equivalent to commutator segment voltage the least；There are the least electromotive force or pulsation of current；Eliminate diverter, from And simple in construction, axial dimension are more compact, lightweight, low cost.

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 exploded perspective view of the brush motor of one embodiment of the invention；

Fig. 2 is the assembling schematic diagram of the brush motor shown in Fig. 1；

Fig. 3 is the schematic diagram after the brush motor shown in Fig. 2 removes stator case and end cap；

Fig. 4 is the schematic perspective view of the stator case of the brush motor shown in Fig. 2；

Fig. 5 is the schematic diagram after the brush motor shown in Fig. 2 removes stator case, end cap and Magnet；

Fig. 6 is the part exploded perspective view of the brush motor shown in Fig. 2；

It it is a kind of brush motor of prior art shown in Fig. 7.

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.

Fig. 1 is the exploded perspective view of the brush motor of one embodiment of the invention；Fig. 2 is that having shown in Fig. 1 brushes electricity The assembling schematic diagram of machine.

Refer to Fig. 1 to Fig. 3, the brush motor 20 of the present invention, including stator 30, rotor 50.

Described stator 30 includes cylindrical housings 32, the Magnet 34 being fixed on housing 32 inwall and relative housing 32 fixing brush assembly of electric 36, described brush assembly of electric 36 includes some brushes 362 (referring to Fig. 5).

Described rotor 50 is rotatably contained in stator 30, including ring support 52, is fixed on support 52 The ring-shaped core 54 of outer surface, the conductor 56 being located on 54 outer surfaces unshakable in one's determination, fixing the turning of opposite brackets 52 Axle 58.Described support 52 central authorities set through hole and pass through for rotating shaft 58.Preferably, described conductor 56 be around Group, described winding 56 includes interior outer double-layer structure, after can being coiled into continuously by the wire of a tape insulation layer again Being bent into double-deck arcuate structure, be fixed on the outer surface of unshakable in one's determination 54 the most again, winding process is easy.

Described magnets of stator 34, towards rotor windings 56, has radial air gap between the two so that rotor can phase Rotating stator, described brush 362 is used for and winding 56 sliding contact, to realize commutation.

Preferably, described Magnet 34 includes the magnetic pole of some circumferentially spaced settings, sets between adjacent pole Gap 38 (see Fig. 1), described brush 362 is respectively arranged in corresponding gap 38.Specifically, in this reality Executing in example, described motor includes 6 magnetic poles and 6 brushes.

Refer to Fig. 3, be provided with an elastic device 39 such as U-shaped shell fragment in each gap 38 between magnetic pole Circumferentially positioned.

Referring to Fig. 4, described housing 32 sets some radial direction through hole 322 and passes through for brush.Preferably, institute Stating through hole 322 is the breach being arranged at housing 32 feather edge, and breach number is corresponding with brush number.

Described stator 30 also includes two end cap 40,42 (see Fig. 1), is mounted respectively to cylindrical housings 32 Two axial ends.Preferably, described end cap 40,42 setting bayonet socket 402,422, housing 32 two ends set fixture block 324,326, it is respectively clamped in the bayonet socket 402,422 of end cap 40,42.Fluting can be set on fixture block 326, Fixture block 326 houses to bayonet socket 422, can make its flexural deformation thus by end cap by punching press fixture block 326 at fluting 42 fix with housing 32.

Referring to Fig. 5 and Fig. 6, described brush assembly of electric 36 includes that annular installing rack 364, some being fixed to are pacified The brush box 366 shelving 364, the brush 362 being installed in each brush box 366.Described installing rack 364 quilt It is held on and is wherein fixed between an end cap 40 and an axial end of housing 32.Each brush box 366 is passed through It is contained in after one respective through hole 322 of housing 32 in a corresponding magnetic pole gap 38.One elastic device can be arranged Between brush 362 end and brush box 366, for promoting the front end contact surface of brush 362 to connect with winding Touch.

Previously described brush motor is inner-rotor-type, it may be assumed that rotor is positioned at stator.It is to be appreciated that The brush motor of the present invention can also be external-rotor-type, it may be assumed that stator is positioned at stator, now, and rotor The position of critical piece can be adjusted to: magnets of stator is fixed on the outer surface of housing, and rotor core is fixed on The inner surface of annular pivoted frame, winding is fixed on the inner surface of iron core, is centered around periphery the phase therewith of Magnet Right.

The brush motor of the present invention can be applicable to various occasion, especially harsher to axial dimensional requirement Occasion, as can be used as the cooling fan motor of automobile engine.

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

1. a brush motor, including stator and rotor, it is characterised in that described rotor includes annular ferrum The heart and be located at the winding on surface unshakable in one's determination；Described stator includes housing, the Magnet being fixed on housing and phase The brush assembly of electric fixing to housing, described brush assembly of electric includes some brushes, and described brush is used for and conductor Sliding contact；Described Magnet is towards described winding and includes some along the circumferentially spaced magnetic pole of motor, Gap is set between adjacent pole；Described winding includes interior outer double-layer structure, by the wire of a tape insulation layer Double-deck arcuate structure it is bent into again after being coiled into continuously；Described brush is respectively arranged in corresponding gap, institute Stating stator case to set some radial direction through hole and pass through for brush, described brush assembly of electric includes that relative housing is fixed Annular mounting frame and some brush box being fixed to installing rack, described each brush box install to housing At respective through hole, each brush is contained in interior and with described winding the double-deck arc of a corresponding brush box and ties Structure radially contacts with.

2. brush motor as claimed in claim 1, it is characterised in that be provided with a bullet in each gap Property device location between the magnetic pole.

3. brush motor as claimed in claim 1, it is characterised in that described stator also includes two respectively Be fixed to the end cap at housing two ends, described installing rack be held in wherein an end cap and housing end it Between.

4. the brush motor as described in any one of claims 1 to 3, it is characterised in that described motor is interior Rotator type, described rotor also includes that a ring support, described iron core are fixed to the outer surface of described support.

5. the brush motor as described in any one of claims 1 to 3, it is characterised in that described motor is outward Rotator type, described rotor also includes that a ring support, described iron core are fixed to the inner surface of described support.