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CN106169852A - Brushless single phase motor and electric tool - Google Patents

Brushless single phase motor and electric tool Download PDF

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Publication number
CN106169852A
CN106169852A CN201610217337.7A CN201610217337A CN106169852A CN 106169852 A CN106169852 A CN 106169852A CN 201610217337 A CN201610217337 A CN 201610217337A CN 106169852 A CN106169852 A CN 106169852A
Authority
CN
China
Prior art keywords
rotor
tooth
pole shoe
single phase
phase motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201610217337.7A
Other languages
Chinese (zh)
Inventor
李越
张涛
周垂友
柴捷
储俊杰
左小兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Johnson Electric Shenzhen Co Ltd
Original Assignee
Johnson Electric Shenzhen Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Johnson Electric Shenzhen Co Ltd filed Critical Johnson Electric Shenzhen Co Ltd
Priority to DE102016109083.2A priority Critical patent/DE102016109083A1/en
Priority to MX2016006569A priority patent/MX2016006569A/en
Priority to BR102016011420A priority patent/BR102016011420A2/en
Priority to US15/160,494 priority patent/US20160344244A1/en
Priority to KR1020160062197A priority patent/KR20160137436A/en
Priority to JP2016102428A priority patent/JP2017022972A/en
Publication of CN106169852A publication Critical patent/CN106169852A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12Stationary parts of the magnetic circuit
    • H02K1/14Stator cores with salient poles
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K29/00Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/03Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12Stationary parts of the magnetic circuit
    • H02K1/14Stator cores with salient poles
    • H02K1/146Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12Stationary parts of the magnetic circuit
    • H02K1/16Stator cores with slots for windings
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/27Rotor cores with permanent magnets
    • H02K1/2706Inner rotors
    • H02K1/272Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/276Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
    • H02K1/2766Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K29/00Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K2213/00Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03Machines characterised by numerical values, ranges, mathematical expressions or similar information

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

The present invention relates to a kind of brushless single phase motor and electric tool, motor include stator and can relative stator rotate rotor, stator includes stator core and winding, described stator core includes the tooth that yoke portion and at least two extend internally from yoke portion, described tooth includes tooth body and is located at the crown of tooth body end, described crown includes the first pole shoe and the second pole shoe extended respectively to both sides, in the space that described rotor is housed in the first pole shoe of described at least two tooth, the second pole shoe encloses;The detent of described rotor it is provided with between first pole shoe and second pole shoe of each described tooth, described detent is partial to described first pole shoe, so that the pole-face towards described rotor of described second pole shoe is more than the pole-face towards described rotor of described first pole shoe.The monophase machine of the present invention has bigger starting torque, and starting capability is strong, and its startup energy force rate towards a direction is strong towards the startup ability of other direction, is particularly suited for the application scenarios such as electric tool.

Description

Brushless single phase motor and electric tool
[technical field]
The present invention relates to machine field, especially relate to a kind of brushless single phase motor and apply this brushless single phase electricity The electric tool of machine.
[background technology]
The advantage that monophase machine has low cost.But brushless single phase motor is poor due to starting capability, exists always Some need the application scenario of large starting moment to be restricted, and such as electric tool etc., therefore need a kind of starting badly The brushless single phase motor that ability is strong.
[summary of the invention]
It is an object of the invention to overcome the deficiency of above-mentioned technology, it is provided that a kind of brushless single phase motor.
The present invention provide a kind of brushless single phase motor, including stator and can relative stator rotate rotor, institute State stator include stator core and be set around the winding of described stator core, described stator core include yoke portion and The tooth that at least two extends internally from yoke portion, described tooth includes tooth body and is located at the crown of tooth body end, described Crown include respectively to both sides extend the first pole shoe and the second pole shoe, described rotor be housed in described at least two In the space that first pole shoe of individual tooth, the second pole shoe enclose;First pole shoe of each described tooth and the second pole shoe Between be provided with detent towards described rotor, described detent is partial to described first pole shoe, so that institute State the pole-face towards described rotor more than described first pole shoe of the pole-face towards described rotor of the second pole shoe.
Further, described rotor includes that the outer peripheral face of rotor is not along some permanent-magnet poles that rotor is circumferentially disposed On a periphery, make described first pole shoe, between the pole-face of the second pole shoe and rotor, form uneven thickness Even air gap.
Further, described rotor includes along some permanent-magnet poles that rotor is circumferentially disposed, the outer half of described rotor Footpath is gradually reduced to both sides from permanent-magnet pole circumference center.
Further, the maximum gauge of described air gap and the ratio of its minimum thickness are between 2~4 times.
Further, described motor also includes the controller being connected with stator winding, can be changed by controller By the sense of current of stator winding thus change the startup direction of rotor, rotor startup in one direction Ability is more than towards another rightabout startup ability.
Further, in described at least two tooth, the first pole shoe of one of them tooth and the second of another tooth Pole shoe adjacent and between across notch, the length of described second pole shoe more than or equal to described notch width with The length sum of described first pole shoe.
Further, the width of described detent is 1~2 times of described width of rebate.
Further, described tooth is deviateed relative to the center of rotation of described rotor in the position of described detent The centrage 10-15 degree of tooth body.
Further, the width of described detent is equal to or more than the width of the tooth body of described tooth.
Further, the inner peripheral surface of the first pole shoe and the second pole shoe is to the distance of rotor center along in tooth body The direction of heart line is gradually increased.
Further, the width of described notch is more than 2 millimeters.
Further, described rotor also includes rotor magnetic core, and described some permanent-magnet poles are by being fitted to described rotor Multiple permanent magnets in magnetic core are formed.
Further, described rotor magnetic core outer radius from the circumferential center of each permanent magnet to both sides gradually Reduce.
Further, described yoke portion is annular, the shaped as frame of Guan Bi or the shaped as frame of opening of Guan Bi.
Further, described rotor includes that rotor magnetic core and permanent magnet, described permanent magnet are installed to described rotor The surface of magnetic core or in being embedded into described rotor magnetic core to form described permanent-magnet pole.
The present invention also provides for a kind of electric tool applying above-mentioned motor, and described power tool application is aforementioned single-phase Brushless electric machine, the stator tooth of described brushless single phase motor uses unsymmetric structure, so that rotor is towards one The startup ability in direction is more than towards another rightabout startup ability.
The monophase machine of the above embodiment of the present invention has the advantages that by increasing stator tooth and air gap Degree of asymmetry thus increase the location torque of motor, reduce motor be under free state stop position; Avoid the zero crossing of electromagnetic torque by the zero point making location torque and make it near the maximum of electromagnetic torque as far as possible Near Zhi, thus increase the starting capability of motor;Due to asymmetry, rotor startup towards a direction Energy force rate is strong towards the startup ability of other direction, is particularly suited for the occasions such as electric tool.
[accompanying drawing explanation]
Fig. 1, Fig. 2 are the rough schematic view of the present invention a kind of brushless single phase motor;
Fig. 3 is the rough schematic view of Fig. 1 rotor;
Fig. 4 is the location torque relation curve variation diagram with electromagnetic torque of the motor in Fig. 1;
Fig. 5 is the magnetic circuit scattergram in free stop place of the rotor in Fig. 1;
Fig. 6 is the magnetic circuit scattergram near point of instability of the rotor in Fig. 1.
[detailed description of the invention]
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
With reference to shown in Fig. 1, a kind of brushless single phase motor 10 that the present invention provides, including stator 20 with can be relative The rotor 30 that stator 20 rotates.Stator 20 includes by the soft magnetic material such as silicon tablet etc. with magnetic property The stator core made and the winding 28 (only showing 3 windings in figure) being set around stator core, stator core The tooth 22 extended internally from yoke portion 21 including yoke portion 21 and at least two, tooth 22 includes tooth body 26 and is located at The crown 23 of tooth body 26 end, crown 23 includes the first pole shoe 24 and the second pole shoe extended respectively to both sides 25, the pole-face length towards rotor 30 of the first pole shoe 24 less than the second pole shoe 25 towards rotor 30 Pole-face length.In the specification and claims, the pole-face of pole shoe refer to pole shoe towards in rotor 30 Side surface.Preferably, the inner peripheral surface of the first pole shoe 24 and the second pole shoe 25 is not on same circumference.
Additionally, each tooth 22 is also formed with detent 50 between the first pole shoe 24 and the second pole shoe 25 Towards rotor 30, detent 50 is partial to the first pole shoe 24, makes the pole-face of the second pole shoe 25 more than the first pole The pole-face of boots 24.
Relative to two adjacent teeth 22, the first pole shoe 24 of one of them tooth and the second pole shoe of another tooth 25 is adjacent, and is separated with notch 60 between this first pole shoe 24 and this second pole shoe 25, two the most adjacent teeth 22 are disconnected by notch 60.
As in figure 2 it is shown, the length of the first pole shoe 24 and the second pole shoe 25 represents with L1 and L2 respectively, The radial thickness of the first pole shoe 24 and the second pole shoe 25 represents with W1 and W2 respectively, detent 50 Width a represent, the width b of notch 60 represents, in the present embodiment, L2 > L1, it is preferable that L2 >=L1+b, i.e. notch 60 entirety falls within close first pole shoe of the middle separated time of two teeth 22 of its both sides Side.
In the present embodiment, detent 50 is partial to the first pole shoe 24 of tooth 22, concrete, detent The centrage angle, θ of the tooth body 26 of the center offset teeth 22 of 50 (using the center O of rotor 30 as The summit of central angle is measured, the centrage l1 of the tooth body 26 that a limit is tooth 22 of this angle, θ, another While be through rotor center O and the line l2 of detent 50 central point), to improve tooth 22 not further Symmetrical degree, it is preferable that angle, θ is 10-15 degree.
In the present embodiment, the width a of detent 50 is substantially equal to the width of the tooth body 26 of tooth 22.? In the scheme replaced, the width a of detent 50 can be less than or greater than the width of the tooth body 26 of tooth 22.
In the present embodiment, the width a of detent 50 is more than the width b of notch 60, and is less than notch 60 2 times of width b, i.e. b < a < 2b.Preferably, the width b of notch 60 is more than 2 millimeters (mm), enters One step ground, more than 2.5mm, uses the notch 60 that opening is bigger, the beneficially winding of stator winding, simultaneously The location torque (cogging torque) of motor can be increased, reduce motor and be under free state the position stopped I.e. location torque is less than the position of friction torque.
In the present embodiment, it is preferable that the first pole shoe 24 radial thickness W1 is gradually reduced along the direction away from tooth 22, The radial thickness W2 of the second pole shoe 25 is gradually reduced along the direction away from tooth 22.It is to say, the first pole shoe 24, Second pole shoe 25 has bigger magnetic resistance the closer to the position of notch 60.
Referring to figs. 1 to Fig. 3, rotor 30 is housed in first pole shoe the 24, second pole shoe of at least two tooth 22 In 25 spaces enclosed, rotor 30 includes along some permanent-magnet poles 32 that rotor 30 is circumferentially disposed, rotor 30 Outer peripheral face not on the same face of cylinder, therefore, the inner peripheral surface of first pole shoe the 24, second pole shoe 25 with turn Air gap 40 in uneven thickness is formed between the outer peripheral face of son 30.Preferably, the maximum gauge of this air gap 40 And the ratio of its minimum thickness is between 2~4 times.This is designed with the location torque helping increase motor 10, subtracts Small machine is under free state the position stopped.
In the present embodiment, rotor 30 also includes that rotor magnetic core 31, the center of rotor magnetic core 31 have installing hole 33 to be fixedly installed to rotating shaft (being not drawn on figure).Some permanent-magnet poles 32 are by being fitted in rotor magnetic core 31 Multiple permanent magnets 32 are formed, and the quantity of permanent-magnet pole 32 is equal with the quantity of stator tooth 22.In the present embodiment, The quantity of permanent-magnet pole 32 and stator tooth 22 is 4.
In the present embodiment, as it is shown on figure 3, the outer peripheral face of rotor magnetic core 31 is concave-convex cambered surfaces structure, not same On one circumference.Specifically, outer radius R (with reference to Fig. 2) of rotor magnetic core 31 is from corresponding to permanent-magnet pole 32 weeks Be gradually reduced to permanent-magnet pole 32 both sides to the position at center, it is preferable that the outer peripheral face of rotor magnetic core 31 about Rotor radius by permanent-magnet pole 32 circumference center is symmetrical.First pole shoe 24 and the inner peripheral surface of the second pole shoe 25 Distance to rotor center is gradually increased, so, outside rotor magnetic core 31 along the direction near tooth body centrage The inner peripheral surface of side face and first pole shoe the 24, second pole shoe 25 forms air gap 40 in uneven thickness.Therefore, When rotor 30 stops, (namely permanent magnet 32 circumference center, rotor magnetic core 31 outer radius maximum position Position) more likely near the first pole shoe 24 or the second pole shoe 25, it is to avoid rotor 30 stops at dead-centre position.
The advantage of above-mentioned design is to avoid rotor 30 to be parked in dead-centre position, and electromagnetic torque when increasing startup. Specifically, as shown in Figure 4, the location torque (cogging of motor in one electric cycle of the graph representation on Fig. 4 top Torque) change curve, wherein, abscissa express time, vertical coordinate represents location torque.It is to be appreciated that Motor 10 by move to stop during, when location torque less than friction torque time, rotor 30 it is possible to Stop.The above-mentioned design of the present invention improves the peak value of location torque, and rotor 30 is under overwhelming majority position Location torque more than friction torque, so, reduce motor and be under free state the position stopped, from And rotor 30 can be effectively prevented from and stop at dead-centre position.
(it is in counter electromotive force, also for electromagnetic torque in 10 1 electric cycles of the graph representation motor of Fig. 4 bottom It is exactly that Back-EMF is directly proportional) figure, wherein, abscissa express time, vertical coordinate represents electromagnetic torque Size.It is to be appreciated that when electromagnetic torque is more than location torque and friction torque sum, rotor 30 ability Start.
Fig. 4 represents the position that location torque is zero of rotor 30 by indicatrix L5, it is preferable that this stopping Position and electromagnetic torque are that the position (the namely zero crossing of electromagnetic torque curve figure) of zero is at a distance of more than 40 degree Electrical angle.Preferably, startup stage, the average output torque that rotor starts in one direction with towards separately The ratio of the average output torque of one direction startup is more than 11:9.
Rotor 30 is likely to the position being parked in location torque equal or close to zero, such as indicatrix L5 in Fig. 4 The position at place.Now, owing to electromagnetic torque is far longer than zero, therefore, after motor 10 stator winding electrifying I.e. there is sufficiently large starting torque.
It is to be appreciated that the rotor 30 of the present invention also has twocouese starting capability, i.e. can by with winding The 28 electric machine controller (not shown) being connected are exchanged and are made by the sense of current of stator 20 winding 28 when starting Rotor 30 starts towards the direction wanted, and reversely controls to turn by controlling the electric current of the winding 28 of stator 20 The rotation direction of son 30.Because the unsymmetry of tooth, when the electric current time institute passing to different directions to stator winding The electromagnetic torque produced is in different size, namely the starting torque of motor positive and inverse is different, and a direction is big, One direction is little, and this kind of design is particularly suited for electric tool etc..
Fig. 5 and Fig. 6 respectively illustrates two kinds of possible stop positions of rotor 30.Wherein, Fig. 5 is certainly So stop position of state (state that friction torque is the least) lower rotor part, rotor magnetic core 31 outer radius maximum Being located proximate to the second pole shoe 25, the location torque corresponding to this position, electromagnetic torque refer to Fig. 5 upper left quarter Point location torque curve chart, electromagnetism curve chart, in this figure, represent the stopping of rotor 30 by indicatrix L5 Position.
Fig. 6 is the point of instability of rotor, i.e. rotor if subjected to bigger frictional force, the position that may stop. What rotor magnetic core 31 outer radius was maximum is located proximate to the first pole shoe 24, the location torque corresponding to this position, electricity Magnetic torque refers to the location torque curve chart of Fig. 6 upper left, electromagnetism curve chart, in this figure, with instruction Line L6 represents the stop position of rotor 30.It will be seen that the rotor 30 position correspondence motor shown in Fig. 6 is anti- Near potential maximum, it is beneficial to produce big electromagnetic torque, has bigger than rotor 30 position shown in Fig. 5 Electromagnetic torque.
In the above embodiment of the present invention, the yoke portion 21 of stator core is the annular of Guan Bi, now, stator winding May be mounted to the tooth body 26 of tooth 22.It is to be appreciated that the yoke portion 21 of stator core can be the shaped as frame of Guan Bi, Such as rectangle, now, stator winding may be mounted to the tooth body 26 of tooth 22.The yoke portion 21 of stator core is also Can be the shaped as frame of opening, such as U-shaped or C-shaped, now, stator winding may be mounted to the tooth body of tooth 22 26 or yoke portion 21.It is to be appreciated that stator core can use monoblock type, it would however also be possible to employ split type; The yoke portion of stator core and tooth can be made of one formula, it is also possible to make split type.
In the above embodiment of the present invention, permanent magnet 32 is embedded in rotor magnetic core 31.It is to be appreciated that forever Magnet 32 can also be installed to the outer surface of rotor magnetic core 31.
The stator tooth of above-described embodiment all uses salient pole form i.e. pole shoe circumferentially to stretch out from tooth body both sides, permissible Understanding ground, stator tooth can also use non-salient pole form i.e. pole shoe circumferentially not stretch out from tooth body both sides but hide In tooth body end.
Above example only have expressed the preferred embodiment of the present invention, and it describes more concrete and detailed, but Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that, for this area For those of ordinary skill, without departing from the inventive concept of the premise, it is also possible to make some deformation and change Entering, as being combined the different characteristic in each embodiment, these broadly fall into protection scope of the present invention.

Claims (15)

1. a brushless single phase motor, including stator and can relative stator rotate rotor, described stator bag Including stator core and be set around the winding of described stator core, described stator core includes yoke portion and at least two The tooth extended internally from yoke portion, described tooth includes tooth body and is located at the crown of tooth body end, it is characterised in that: Described crown include respectively to both sides extend the first pole shoe and the second pole shoe, described rotor be housed in described in extremely In the space that few first pole shoe of two teeth, the second pole shoe surround;First pole shoe and second of each described tooth The detent of described rotor, the pole-face towards described rotor of described second pole shoe it is provided with between pole shoe The pole-face towards described rotor more than described first pole shoe.
Brushless single phase motor the most according to claim 1, it is characterised in that described detent Center is towards the centrage of the tooth body of the described tooth of direction deviation of described first pole shoe.
Brushless single phase motor the most according to claim 1, it is characterised in that described rotor includes edge Some permanent-magnet poles that rotor is circumferentially disposed, the outer peripheral face of rotor is not on the same face of cylinder, so that described First pole shoe, between the pole-face of the second pole shoe and the outer peripheral face of rotor, form air gap in uneven thickness.
Brushless single phase motor the most according to claim 1, it is characterised in that: described rotor includes edge Some permanent-magnet poles that rotor is circumferentially disposed, the outer radius of described rotor is from permanent-magnet pole circumference center to both sides gradually Reduce.
Brushless single phase motor the most according to claim 3, it is characterised in that: the maximum of described air gap The ratio of thickness and its minimum thickness is between 2~4.
Brushless single phase motor the most according to claim 1, it is characterised in that: described motor also includes The controller being connected with stator winding, the sense of current by stator winding can be changed by controller thus Changing the startup direction of rotor, rotor startup ability in one direction is more than towards another rightabout startup Ability.
Brushless single phase motor the most according to claim 1, it is characterised in that: described at least two tooth In, the first pole shoe of the first tooth is adjacent with the second pole shoe of the second tooth and is separated by notch, and described notch is whole Body is positioned at the side of close described first tooth of the middle separated time of described first tooth, the second tooth.
Brushless single phase motor the most according to claim 1, it is characterised in that: described at least two tooth In, the first pole shoe of the first tooth is adjacent with the second pole shoe of the second tooth and is separated by notch, and described location is recessed The width of groove is 1~2 times of described width of rebate.
Brushless single phase motor the most according to claim 1, it is characterised in that: described detent The centrage 10-15 degree of the tooth body of described tooth is deviateed in center relative to the center of rotation of described rotor.
Brushless single phase motor the most according to claim 1, it is characterised in that: described detent Width is equal to or more than the width of the tooth body of described tooth.
11. according to the brushless single phase motor described in any one of claim 1 to 10, it is characterised in that: the The inner peripheral surface of one pole shoe and the second pole shoe gradually increases to the distance of rotor center along the direction near tooth body centrage Add.
12. according to the brushless single phase motor described in claim 7 or 8, it is characterised in that: described notch Width is more than 2 millimeters.
13. according to the brushless single phase motor described in claim 3 or 4, it is characterised in that: described rotor is also Including rotor magnetic core, described some permanent-magnet poles are formed by the multiple permanent magnets being fitted in described rotor magnetic core, Described rotor magnetic core outer radius be gradually reduced to both sides from the circumferential center of each permanent-magnet pole.
14. brushless single phase motors according to claim 1, it is characterised in that: described stator core Yoke portion is annular, the shaped as frame of Guan Bi or the shaped as frame of opening of Guan Bi.
15. 1 kinds of electric tools, it is characterised in that: described electric tool includes such as claim 1 to 14 Brushless single phase motor described in any one, the rotor of described brushless single phase motor startup ability in one direction More than towards another rightabout startup ability.
CN201610217337.7A 2015-05-21 2016-04-08 Brushless single phase motor and electric tool Withdrawn CN106169852A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE102016109083.2A DE102016109083A1 (en) 2015-05-21 2016-05-18 Single-phase brushless motor and electrical appliance
MX2016006569A MX2016006569A (en) 2015-05-21 2016-05-19 Single phase brushless motor and electric apparatus.
BR102016011420A BR102016011420A2 (en) 2015-05-21 2016-05-19 single-phase brushless motor and electrical appliance
US15/160,494 US20160344244A1 (en) 2015-05-21 2016-05-20 Single Phase Brushless Motor And Electric Apparatus
KR1020160062197A KR20160137436A (en) 2015-05-21 2016-05-20 Single phase brushless motor and electric apparatus
JP2016102428A JP2017022972A (en) 2015-05-21 2016-05-23 Single phase brushless motor and electric apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510262232 2015-05-21
CN2015102622329 2015-05-21

Publications (1)

Publication Number Publication Date
CN106169852A true CN106169852A (en) 2016-11-30

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CN201610217337.7A Withdrawn CN106169852A (en) 2015-05-21 2016-04-08 Brushless single phase motor and electric tool

Country Status (4)

Country Link
JP (1) JP2017022972A (en)
KR (1) KR20160137436A (en)
CN (1) CN106169852A (en)
MX (1) MX2016006569A (en)

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CN113675962A (en) * 2020-05-13 2021-11-19 佛山市威灵洗涤电机制造有限公司 Stator punch and stator, motor and electrical equipment having the same
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