CN105529851A - Rotor punching plate, motor rotor and motor applying motor rotor - Google Patents
Rotor punching plate, motor rotor and motor applying motor rotor Download PDFInfo
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- CN105529851A CN105529851A CN201610079955.XA CN201610079955A CN105529851A CN 105529851 A CN105529851 A CN 105529851A CN 201610079955 A CN201610079955 A CN 201610079955A CN 105529851 A CN105529851 A CN 105529851A
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- rotor
- dovetail groove
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- groove
- stator
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention provides a rotor punching plate, a motor rotor and a motor applying the motor rotor. The motor rotor (1) is equipped with a circular periphery, and multiple radialized magnetic steel grooves (12) are uniformly distributed in the periphery in a radius direction; one end of each magnetic steel groove (12) is close to the rotating shaft of the rotor (1), and a dovetail groove (11) is formed in the other end, close to the periphery of the rotor (1), of each magnetic steel groove (12); the dovetail groove (11) is communicated with the corresponding magnetic steel groove (12); each dovetail groove (11) comprises a dovetail groove body (112) and a dovetail groove end part (111), wherein the width of the dovetail groove body (112) is less than that of the magnetic steel groove (12); and the dovetail groove end part (111) is equipped with an arc part close to the periphery of the rotor (1). According to the rotor structure, the performance of the motor can be given full play; the low-speed washing efficiency and the high-speed dehydration efficiency both can be kept at a relatively high level; the loss can be lowered; and the quality of a washing machine can be improved.
Description
Technical field
The present invention relates to motor, in particular to a kind of rotor punching, rotor and the motor applying this rotor.
Background technology
For roller washing machine product in the market, what determine its drive motors performance quality is mainly the efficiency that the motor in washing of drum type washing machine and dehydration two courses of work can play.And along with the lifting of washing machine quality, more and more higher to the requirement of motor speed during laundry machine dehydration, this is because the higher dehydrating effect of rotating speed is better, but energy consumption of electrical machinery is also thereupon larger.Thus existing motor dehydrating speed is generally below 16000 revs/min, only have the high-end motor of part can have low speed and efficiency at a high speed concurrently, but the manufacturing processing technic of this motor is relatively complicated.
Summary of the invention
According to an aspect of the present invention, provide a kind of rotor, it has circular periphery, and is evenly distributed with multiple magnet steel groove along radial direction radial; One end of each magnet steel groove is close in the rotating shaft of rotor, and forms dovetail groove at this magnet steel groove near the other end of rotor outer periphery; Dovetail groove is connected with magnet steel groove, and dovetail groove comprises: dovetail groove cell body and dovetail groove end, and wherein, the width of dovetail groove cell body is less than the width of magnet steel groove, and dovetail groove end has the circular arc portion of the periphery close to rotor.
According to the rotor of the embodiment of the present invention, alternatively, the shape of dovetail groove cell body is rectangle.
According to the rotor of the embodiment of the present invention, alternatively, the width of the circular arc portion of dovetail groove end is no more than the width of magnet steel groove.
According to the rotor of the embodiment of the present invention, alternatively, the gap between the circular arc portion of dovetail groove end and the outer surface of rotor is uniform.
According to the rotor of the embodiment of the present invention, alternatively, the gap between the circular arc portion of dovetail groove end and the outer surface of rotor is 0.4-0.6mm.
According to the rotor of the embodiment of the present invention, alternatively, gap is 0.5mm.
According to the rotor of the embodiment of the present invention, alternatively, the height of dovetail groove entirety is not more than 3mm.
According to the rotor of the embodiment of the present invention, alternatively, the height of dovetail groove entirety is 1.5mm.
According to the rotor of the embodiment of the present invention, alternatively, rotor is formed with boss at magnet steel groove close to one end of rotor rotating shaft.
According to the rotor of the embodiment of the present invention, alternatively, boss is one of rectangle, triangle, semicircle or the combination for these shapes.
According to the rotor of the embodiment of the present invention, alternatively, the boss of at least one magnet steel groove is different from the boss of other magnet steel groove.
According to a further aspect in the invention, provide a kind of motor, it comprises aforesaid rotor.
According to another aspect of the invention, provide a kind of motor, it comprises: aforesaid rotor, and stator, this rotor embeds the cavity in the middle part of stator, and stator comprises: the stator tooth of multiple Central Symmetry arrangement, the stator slot formed between adjacent two stator tooths, wherein, stator tooth is linear close to the end of rotor.
According to the motor of the embodiment of the present invention, alternatively, the end of stator tooth has the end face that length is greater than this stator tooth main part Breadth Maximum.
According to the motor of the embodiment of the present invention, alternatively, the end of stator tooth coordinates the minimal air gap formed to be 0.4 ~ 0.6mm with the periphery of rotor.
According to the motor of the embodiment of the present invention, alternatively, rotor has 8 poles, and stator has 12 grooves, or rotor has 6 poles, and stator has 9 grooves.
According to the motor of the embodiment of the present invention, alternatively, each magnet steel groove of rotor embedded in monolithic bar magnet, and adjacent magnet steel mask has identical polarity.
According to the motor of the embodiment of the present invention, alternatively, this motor is washing machine drive motors.
According to the one side again of the embodiment of the present invention, provide a kind of rotor punching, it has circular periphery, and is evenly distributed with multiple magnet steel groove along radial direction radial; One end of each magnet steel groove is close in the rotating shaft of rotor, and forms dovetail groove at this magnet steel groove near the other end of rotor outer periphery; Dovetail groove is connected with magnet steel groove, and dovetail groove comprises: dovetail groove cell body and dovetail groove end, and wherein, the width of dovetail groove cell body is less than the width of magnet steel groove, and dovetail groove end has the circular arc portion of the periphery close to rotor.
The performance of motor can be played according to the rotor structure of the embodiment of the present invention, make low speed detersive efficiency and high speed dewatering efficiency can keep higher level, Loss reducing, improve washing machine quality; And, cooperatively interact according to the rotor structure of the embodiment of the present invention and stator structure, can lifting motor performance further, vibration when reducing high speed and noise and traveling comfort, improve washing machine quality, can also according to actual service condition, adjustment winding parameter, meets the high low speed performance requirements of difference of motor for washer.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, be briefly described below by the accompanying drawing of embodiment, apparently, the accompanying drawing in the following describes only relates to some embodiments of the present invention, but not limitation of the present invention.
Fig. 1 schematically shows the structure of the rotor according to the embodiment of the present invention, Figure 1A and Figure 1B is the partial enlarged view of Fig. 1; Fig. 1 C schematically shows the structure load magnet steel in the motor rotor construction shown in Fig. 1 after;
Fig. 2 schematically shows the structure of the motor stator according to the embodiment of the present invention, and Fig. 2 A and Fig. 2 B is the partial enlarged view of Fig. 2;
Fig. 3 is the schematic diagram that the motor stator structure shown in the motor rotor construction shown in Fig. 1 and Fig. 2 cooperatively interacts, and Fig. 3 A is the partial enlarged view of Fig. 3, and Fig. 3 B is the schematic diagram after structure shown in magnet steel load map 3;
Fig. 4 A is the three-dimensional view of the motor stator shown in Fig. 2, and Fig. 4 B is the three-dimensional view that shown in Fig. 1, stator shown in rotor and Fig. 2 cooperatively interacts, and Fig. 4 C is also the three-dimensional view of the motor stator shown in Fig. 2.
Reference numeral
1 rotor
11 dovetail grooves
111 dovetail groove ends
112 dovetail groove cell bodies
12 bar-shaped troughs
13,13A, 13B boss
2 stators
21 stator tooths
211 stator tooth end
22 stator slots
23 salient points
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing of the embodiment of the present invention, the technical scheme of the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is a part of embodiment of the present invention, instead of whole embodiments.Based on described embodiments of the invention, the every other embodiment that those of ordinary skill in the art obtain under without the need to the prerequisite of creative work, all belongs to the scope of protection of the invention.
Unless otherwise defined, technical term used herein or scientific terminology should be in field belonging to the present invention the ordinary meaning that the personage with general technical ability understands." first ", " second " that use in patent application specification of the present invention and claims and similar word do not represent any order, quantity or importance, and are only used to distinguish different parts.Equally, the similar word such as " " or " " does not represent restricted number yet, but represents to there is at least one.
According to embodiments of the invention, disclose a kind of permagnetic synchronous motor being applicable to washing machine drum and driving, specifically, this motor comprises: rotor and the stator structure be mated of built-in tangential magnetic structure, the result that this motor rotor construction and rotor coordinate with stator can by the performance of motor out, make low speed detersive efficiency and high speed dewatering efficiency can keep higher level, Loss reducing, improve washing machine quality.
Fig. 1 schematically shows the structure of the rotor according to the embodiment of the present invention, Figure 1A and Figure 1B is the partial enlarged view of Fig. 1, and Fig. 1 C schematically shows the partial structurtes load magnet steel in the motor rotor construction shown in Fig. 1 after.
Fig. 1 is the front view of the rotor structure not embedding magnet steel.Specifically, motor rotor construction is as shown in Figure 1 rounded on the whole, that is has circular periphery; Eight bar-shaped troughs 12 along radial direction radial are evenly distributed with at this circular configuration, for placing magnet steel, such as, this magnet steel can be the monolithic bar magnet of the mating shapes of shape and bar-shaped trough 12, and the mask for the adjacent magnet steel of multiple bar-shaped troughs 12 has identical polarity, thus forms the closed-loop path of motor main field, this adjacent magnet steel mask has the magnet steel of identical polar to distribute can strengthen magnetic field, thus be applicable to larger electric current, improve motor expansion speed scope, also not easily demagnetize; One end of each bar-shaped trough 12 is close in the rotating shaft of rotor 1, and forms dovetail groove 11 at the other end of bar-shaped trough 12 near rotor 1 surface; Dovetail groove 11 is mainly used in every magnetic and fixing magnet steel, can affect air-gap flux amount size simultaneously.In addition, from another angle, the shape of bar-shaped trough 12 also with magnet steel mating shapes, therefore for the magnet steel of other shape, also can adopt the magnet steel groove of other shape outside rectangle.
Figure 1A is the partial enlarged view of Fig. 1, shows an oat tail groove structure 11.As shown in Figure 1A, dovetail groove 11 is formed at bar-shaped trough 12 one end near rotor surface, namely from the one end close to stator.Dovetail groove 11 is connected with bar-shaped trough 12.Dovetail groove 11 comprises dovetail groove cell body 112 and dovetail groove end 111.As shown in Figure 1A, the width of dovetail groove cell body 112 is less than the width of bar-shaped trough 12, so bar-shaped trough 12 is less than the width of bar-shaped trough 12 main body near the width of the opening of one end of rotor surface, thus can the fixedly embedded magnet steel to bar-shaped trough 12 inside.
The shape of the dovetail groove cell body 112 shown in Figure 1A is rectangle, namely dual-side is perpendicular to the fillet of bar-shaped trough 12, alternatively, dovetail groove cell body 112 also can have other shape, as long as the minigroove insied width of this cell body 112 is less than the groove insied width of bar-shaped trough 12 main body, also namely make described connection dovetail groove 11 and the width of the opening of bar-shaped trough 12 be less than the width of magnet steel, just can play fixation to the magnet steel in bar-shaped trough 12.
Dovetail groove end 111 has circular arc portion, and this circular arc portion is close to the rounded outer surface of rotor 1.Because the Central Symmetry of bar-shaped trough 12 and dovetail groove 11 distributes, the respective circular arc portion of each dovetail groove end 111 is made to have equal distance about the outer surface of rotor 1.Space between the circular arc portion of dovetail groove end 111 and rotor 1 outer surface is that magnetic flux provides path, and the magnetic line of force that the magnet steel in bar-shaped trough 12 is sent forms loop; In theory, this space is narrower, and length is longer, more easily makes saturation effects, thus reduces flux leakage.In figure ia, H1 represents from the gap between the circular arc portion and rotor outer surface of dovetail groove end 111, this gap can be the minimum perpendicular distance between the circular arc portion of dovetail groove end 111 and rotor outer surface, if circular arc portion and rotor outer surface form concentric circles, so circular arc portion arbitrfary point is identical to the vertical range of rotor outer surface.When ensureing rotor edge support strength, consider from the angle reducing leakage field, the gap of dovetail groove and rotor outer surface is the smaller the better.Such as, the gap of dovetail groove and rotor surface can be 0.4-0.6mm, preferably gets 0.5mm.In addition, as previously mentioned, dovetail groove 11 is longer with the space of rotor surface, more can reduce flux leakage, therefore, the length of the circular arc portion of dovetail groove 11 end can be considered to lengthen, but the width of circular arc portion is no more than the width of bar-shaped trough 12 as far as possible.This is because on the one hand, if width is long, can reduce the connection support strength at rotor outer periphery edge, manufacturing cost also can increase simultaneously; On the other hand, if the width of circular arc portion continues to lengthen, obvious lifting is not had for every magnetic effect yet.
From the angle reducing leakage field, the height of dovetail groove 11 can not be too large, because the periphery of the circular arc portion of dovetail groove end 111 can form the edge effect of magnetic circuit, the utilance of magnet steel generally speaking can be made to reduce, and the magnetic flux entering stator tooth is reduced.In figure ia, H2 represents the gap H1 sum of the height of dovetail groove 11 and the circular arc portion of dovetail groove 11 and rotor outer surface.Because for the height of dovetail groove 11 entirety, when keeping intensity, highly more little being more conducive to increases magnetic flux, therefore the height of dovetail groove 11 entirety including end 111 and cell body 112 can be set to be not more than 3mm.Such as, for the structure shown in Figure 1A, if the gap H1 of dovetail groove and rotor surface is chosen to be 0.5mm, can arrange H2 is 2mm, and dovetail groove height corresponding is like this 1.5mm.
With reference to Fig. 1 and Figure 1B, be formed with boss 13, such as, 13A and 13B in Figure 1B at bar-shaped trough 12 away from one end of rotor outer surface.Because bar-shaped trough 12 is hollow outs, in fact this boss is formed in the outer peripheral portion of the cirque structure of rotor 1 central part.As previously mentioned, the magnet steel loading bar-shaped trough 12 is subject to the spacing of open communication structure between dovetail groove 11 and bar-shaped trough 12 along the one end in rotor radial direction, be subject to the spacing of boss 13 at this magnet steel along the other end in rotor radial direction, thus realize fixing in rotor radial direction for magnet steel bar-shaped trough 12 in; What simultaneously the both sides inwall being parallel to rotor radial direction of bar-shaped trough 12 was used for realizing perpendicular to magnet steel on the direction of rotor radial is fixing.
Boss 13, except playing the position-limiting action to magnet steel, can also be used for reducing leakage field, improves magnet steel utilance.This is because if do not arrange boss, magnet steel will directly contact with the annulus in the middle part of rotor, then the magnetic flux of magnet steel will form loop along annulus, because magnetic flux always moves to the direction that magnetic resistance is little, the magnetic flux entering stator tooth is caused sharply to reduce.Because boss 13 size is little, and offset with magnet steel cental axial position and contact, thus substantially leakage field can not occur.If the magnet steel loading rotor bar-shaped trough 12 is monoblock, the boss 13 so for fixing magnet steel can through bar-shaped trough 12.
Fig. 1 is the vertical view of rotor, can see the communicating structures such as rotary shaft hole, bar-shaped trough, dovetail groove.Alternatively, rotor is superposed by multiple lamellas with identical profile as shown in Figure 1 and structure and is formed.The bar-shaped trough formed after superposition, the degree of depth of dovetail groove and the insertion of magnet steel highly match.As previously mentioned, if boss 13 is not through bar-shaped trough 12, so for the rotor that multiple lamella superposition is formed, boss 13 need not be had by each lamella.
When ensureing the support strength of boss 13 for magnet steel, the various shapes such as rectangle, triangle, semicircle can be designed to.As in Figure 1B, boss 13A is semicircle, and boss 13B is rectangle.Comparison diagram 1 is known, and in the rotor structure shown in Fig. 1, except a boss is except semicircle, other boss is rectangle.This boss adopts the shape different from other boss, is to identify rotor direction.Specifically, the consistency in video disc direction can be ensured when carrying out the closed assembly of rotor punching.That is, because punching processing exists error, therefore structurally may there is trickle asymmetry in punching, for multiple punchings that equal dies and pressing equipment are made, making when closed assembly each punching consistent with adding the direction formed man-hour, the amplification of mismachining tolerance can be prevented.In addition, if find that punching has problem, which position existing problem on processing mold can also be found out.
Fig. 2 schematically shows the structure of the motor stator according to the embodiment of the present invention, and Fig. 2 A and Fig. 2 B is the partial enlarged view of Fig. 2.Fig. 2 is the front view of the stator structure according to the embodiment of the present invention, the shown in this figure stator core construction not being wound around winding.Specifically, as shown in Figure 2, stator structure comprises the stator tooth 21 of multiple Central Symmetry arrangement, and between adjacent two stator tooths 21, form a stator slot 22, thus stator tooth 21 and stator slot 22 are staggered.
Further as best seen in figs. 2 and 2, the main body of stator tooth 21 has non-parallel configuration, that is, the both sides of tooth main body have a certain degree, and from stator yoke more close to, the facewidth is relatively larger, this structure can prevent the close partial over saturation of magnetic in load conditions on the one hand, improve motor output torque, the area of stator slot can be increased on the other hand, meet the needs of the number of turn and wire diameter.Preferably, the extend wire clamp angle on the non-parallel both sides of tooth main body is for being greater than 0 ° but being not more than 10 °.Due to stator tooth axial symmetry, therefore, tooth main body and angle between tooth symmetry axis be not more than 5 °.More preferably, as best seen in figs. 2 and 2,3 ° are adopted.
On the other hand, as best seen in figs. 2 and 2, stator tooth end has the end face that length is greater than stator tooth main part Breadth Maximum, this end face can be made like this to match with the excircle of rotor 1, form longer interstitial structure, can air gap flux density be increased, improve motor performance.Alternatively, stator tooth end coordinates the minimal air gap formed to be 0.4 ~ 0.6mm with rotor outer periphery, such as, is 0.5mm.
In addition, alternatively, stator tooth end can be linear, stator tooth end 211 is made to match with the circular circumference structure of rotor the non-uniform air-gap formed like this, as shown in Fig. 3 and Fig. 3 A, thus can harmonic content be reduced, reduce the vibration of motor during high speed, noise and torque pulsation, improve reliability and the efficiency of motor.
As shown in Figure 2, in the oblique shoulder shape of tilting bottom stator slot 22, this structure is conducive to machine coiling, improves stator slot utilance.
Because stator 2 is normally riveted (as shown in Figure 4 C) that formed by the stator lamination stacking of multiple same structure, for preventing throwing off because riveting bad punching, each stator punching can be welded together.So form groove at the edge of stator structure, and arrange salient point in groove, this salient point is used for the welding between stator punching; Specifically, described salient point as the initial fixation point of solder, the solder of described groove for staying after holding welding, so both can make solder set more firm, overall peripheral shape and the outward appearance of stator can not be destroyed again.
Alternatively, as shown in Fig. 2 and Fig. 4 A, salient point 23 is all set at the four edges edge of stator punching, so can all form a long boss structure be made up of multiple salient point in each side of stator, thus all realizes welding in four sides of stator.
Fig. 3 is the schematic diagram that the motor stator structure shown in the motor rotor construction shown in Fig. 1 and Fig. 2 cooperatively interacts, Fig. 3 A is the partial enlarged view of Fig. 3, Fig. 3 B is the schematic diagram after structure shown in magnet steel load map 3, and Fig. 4 B is the three-dimensional view that shown in Fig. 1, stator shown in rotor and Fig. 2 cooperatively interacts.As shown in Figure 3, rotor 1 is embedded in the circular cavity in the middle part of stator 2, and can rotate in stator 2 around driving shaft.Motor according to the embodiment of the present invention can adopt aforesaid rotor structure and stator structure simultaneously.More specifically, this motor can adopt has dovetail groove and dovetail groove end has the rotor structure of circular shape and stator tooth end is rectilinear stator structure, make the non-uniform air-gap between stator tooth end and rotor outer periphery, harmonic content can be reduced, reduce the vibration of motor during high speed, noise and torque pulsation, improve reliability and the efficiency of motor.
On the other hand, according to the motor scheme of the embodiment of the present invention, to be coordinated with the pole groove number of stator by rotor and meet power requirement.In electric machine structure shown in Fig. 3, Fig. 3 A, Fig. 3 B etc., have employed 8 pole 12 groove structures, for three phase electric machine, MgO-ZrO_2 brick is 12/8*3=0.5, for fractional-slot, namely every 2 extremely under, often have 1 winding mutually, motor winding is centralized winding, and centralized winding is more conducive to machine automatic winding.Therefore, this motor is that pole groove is than the fractional-slot concentratred winding being 2/3.Alternatively, according to other embodiments of the invention, other pole groove ratio and/or number of poles and groove number also can be adopted.For three phase electric machine, symmetrical for ensureing each phase winding of motor, groove number must be the multiple of 3, and number of poles is even number certainly.Thus, also can adopt the scheme of 6 pole 9 grooves, pole groove is now 2/3 than also, and motor size also can meet the requirement of micro-machine.According to embodiments of the invention, such as, magnet steel material is ferrite, and rotor and stator material are all silicon steel sheet.The model such as DW470 of this silicon steel sheet, can ensure the intensity of part and rotor bar shaped geosynclinal convex platform between dovetail groove end and rotor outer periphery portion.
Can be a kind of permagnetic synchronous motor with built-in tangential magnetic circuit according to the motor of the embodiment of the present invention, and may be used for the drum driven of washing machine.
The performance of motor can be played according to the rotor structure of the embodiment of the present invention, make low speed detersive efficiency and high speed dewatering efficiency can keep higher level, Loss reducing, improve washing machine quality; Stator structure according to the embodiment of the present invention also by the performance of motor out, can reach higher level in low speed detersive efficiency, high speed dewatering efficiency, and makes motor have enough large Driving Torque, fully meets the job requirement of washing machine; And, cooperatively interact according to the rotor structure of the embodiment of the present invention and stator structure, can lifting motor performance further, vibration when reducing high speed and noise and traveling comfort, improve washing machine quality, can also according to actual service condition, adjustment winding parameter, meets the high low speed performance requirements of difference of motor for washer.
According to rotor structure and the stator structure of the embodiment of the present invention, all can be formed by the punching sheet unit closed assembly that will customize, and for according to the rotor punching of the embodiment of the present invention and stator punching processing technology simple, reliability is high, is convenient to batch production.
The above is only exemplary embodiment of the present invention, but not for limiting the scope of the invention, protection scope of the present invention is determined by appended claim.
Claims (20)
1. a rotor (1),
It is characterized in that,
Described rotor (1) has circular periphery, and is evenly distributed with multiple magnet steel groove (12) along radial direction radial;
One end of each described magnet steel groove (12) is close in the rotating shaft of described rotor (1), and forms dovetail groove (11) at the other end of this magnet steel groove (12) near described rotor (1) periphery;
Described dovetail groove (11) is connected with described magnet steel groove (12),
Described dovetail groove (11) comprising: dovetail groove cell body (112) and dovetail groove end (111),
Wherein, the width of described dovetail groove cell body (112) is less than the width of described magnet steel groove (12), and described dovetail groove end (111) has the circular arc portion of the periphery close to described rotor (1).
2. rotor according to claim 1 (1), is characterized in that, the shape of described dovetail groove cell body (112) is rectangle.
3. rotor according to claim 1 (1), is characterized in that, the width of the circular arc portion of described dovetail groove end (111) is no more than the width of described magnet steel groove (12).
4. rotor according to claim 1 (1), is characterized in that, the gap between the circular arc portion of described dovetail groove end (111) and the outer surface of described rotor (1) is uniform.
5. the rotor (1) according to claim 1 or 4, is characterized in that, the gap between the circular arc portion of described dovetail groove end (111) and the outer surface of described rotor (1) is 0.4-0.6mm.
6. rotor according to claim 5 (1), is characterized in that, described gap is 0.5mm.
7. rotor according to claim 1 (1), is characterized in that, the height of described dovetail groove (11) entirety is not more than 3mm.
8. rotor according to claim 7 (1), is characterized in that, the height of described dovetail groove (11) entirety is 1.5mm.
9. rotor according to claim 1 (1), is characterized in that, described rotor (1) is formed with boss (13) described magnet steel groove (12) close to one end of described rotor rotating shaft.
10. rotor according to claim 9 (1), is characterized in that, described boss (13) is rectangle, triangle, one of semicircle or be the combination of these shapes.
11. rotors according to claim 9 (1), it is characterized in that, the described boss (13) of magnet steel groove (12) described at least one is different from the described boss (13) of other magnet steel groove (12).
12. rotors according to claim 1 (1), is characterized in that, described magnet steel groove (12) is in bar shaped.
13. 1 kinds of motors, is characterized in that, this motor comprises the rotor (1) according to any one of claim 1-12.
14. 1 kinds of motors,
It is characterized in that,
Described motor comprises:
Rotor (1) according to any one of claim 1-12, and stator (2), this rotor (1) embeds the cavity at described stator (2) middle part,
Described stator (2) comprising: the stator tooth (21) of multiple Central Symmetry arrangement, the stator slot (22) formed between adjacent two stator tooths (21), wherein,
Described stator tooth (21) is linear close to the end (211) of described rotor (1).
15. motors according to claim 14, is characterized in that, the described end (211) of described stator tooth (21) has the end face that length is greater than this stator tooth main part Breadth Maximum.
16. motors according to claim 14, is characterized in that, the described end (211) of described stator tooth (21) coordinates the minimal air gap formed to be 0.4 ~ 0.6mm with the periphery of described rotor (1).
17. motors according to claim 14, is characterized in that, described rotor (1) has 8 poles, and described stator (2) has 12 grooves, or described rotor (1) has 6 poles, and described stator (2) has 9 grooves.
18. motors according to claim 14, is characterized in that, each described magnet steel groove (12) of described rotor (1) embedded in monolithic bar magnet, and adjacent magnet steel mask has identical polarity.
19. motors according to any one of claim 14-18, it is characterized in that, described motor is washing machine drive motors.
20. 1 kinds of rotor punchings,
It is characterized in that,
This rotor punching has circular periphery, and is evenly distributed with multiple magnet steel groove (12) along radial direction radial;
One end of each described magnet steel groove (12) is close in the rotating shaft of described rotor (1), and forms dovetail groove (11) at the other end of this magnet steel groove (12) near described rotor (1) periphery;
Described dovetail groove (11) is connected with described magnet steel groove (12),
Described dovetail groove (11) comprising: dovetail groove cell body (112) and dovetail groove end (111),
Wherein, the width of described dovetail groove cell body (112) is less than the width of described magnet steel groove (12), and described dovetail groove end (111) has the circular arc portion of the periphery close to described rotor (1).
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| CN201610079955.XA CN105529851A (en) | 2016-02-04 | 2016-02-04 | Rotor punching plate, motor rotor and motor applying motor rotor |
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| CN201610079955.XA CN105529851A (en) | 2016-02-04 | 2016-02-04 | Rotor punching plate, motor rotor and motor applying motor rotor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106712345A (en) * | 2016-11-09 | 2017-05-24 | 常州雷利电机科技有限公司 | Motor rotor and motor adopting the same |
| CN107733111A (en) * | 2017-11-01 | 2018-02-23 | 莱克电气股份有限公司 | A kind of rotor core |
| CN107834730A (en) * | 2017-11-01 | 2018-03-23 | 莱克电气股份有限公司 | A kind of embedded permanent magnet synchronous rotor iron core |
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| CN205489860U (en) * | 2016-02-04 | 2016-08-17 | 常州雷利电机科技有限公司 | Rotor punching, electric motor rotor and applied this electric motor rotor's motor |
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| CN104253519A (en) * | 2013-06-25 | 2014-12-31 | 铃木株式会社 | Permanent magnet embedding synchronous electric rotating machine |
| KR20150063217A (en) * | 2013-11-29 | 2015-06-09 | 삼성전자주식회사 | Motor and washing machine having the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106712345A (en) * | 2016-11-09 | 2017-05-24 | 常州雷利电机科技有限公司 | Motor rotor and motor adopting the same |
| CN107733111A (en) * | 2017-11-01 | 2018-02-23 | 莱克电气股份有限公司 | A kind of rotor core |
| CN107834730A (en) * | 2017-11-01 | 2018-03-23 | 莱克电气股份有限公司 | A kind of embedded permanent magnet synchronous rotor iron core |
| WO2019084858A1 (en) * | 2017-11-01 | 2019-05-09 | 莱克电气股份有限公司 | Embedded permanent magnet synchronous motor rotor core |
| WO2019085499A1 (en) * | 2017-11-01 | 2019-05-09 | 莱克电气股份有限公司 | Rotor core |
| WO2019085500A1 (en) * | 2017-11-01 | 2019-05-09 | 莱克电气股份有限公司 | Rotor core for embedded permanent magnet synchronous motor |
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