CN113364175A - Modularized embedded motor rotor and motor - Google Patents
Modularized embedded motor rotor and motor Download PDFInfo
- Publication number
- CN113364175A CN113364175A CN202110569051.6A CN202110569051A CN113364175A CN 113364175 A CN113364175 A CN 113364175A CN 202110569051 A CN202110569051 A CN 202110569051A CN 113364175 A CN113364175 A CN 113364175A
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- rotor
- magnetic
- rotor core
- insulating support
- motor
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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
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner 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
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
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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
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
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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
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
- H02K1/30—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
Abstract
The invention discloses a modularized embedded motor rotor, which comprises a rotor core and an insulating support, wherein the insulating support and the rotor core are integrally molded through a metal insert injection molding process, a plurality of magnetic steel grooves which are annularly arranged are formed between the insulating support and the rotor core, magnetic steel is arranged in the magnetic steel grooves, a magnetic leakage preventing gap is formed between every two adjacent magnetic steels, and a limiting bulge matched with the magnetic leakage preventing gap is formed in the insulating support through injection molding and used for limiting the magnetic steel. A motor provided with the motor rotor is also disclosed. The invention can reduce the magnetic leakage, reduce the air gap between the rotor and the stator, improve the power density and efficiency of the motor, reduce the heat generated by the motor in the running process, and improve the use stability and the service life of the motor. And the motor rotor has good stability and lower production process cost.
Description
Technical Field
The invention belongs to the field of motor equipment, and particularly relates to a modularized embedded motor rotor and a motor.
Background
The brushless motor is widely used in various fields of gardens, electromotion and other national economy, and is popular with consumers due to small volume and high efficiency. Brushless motor generally adopts high performance sintered neodymium iron boron as the material of motor magnet steel preparation, just can fully exert its advantage small, efficient. The placing mode of the high-performance sintered neodymium iron boron magnetic steel on the motor rotor is always a subject faced by motor engineers at home and abroad, and various types and placing and fixing modes of the magnetic steel are also provided and applied, for example, tile-shaped or bread-shaped surface-mounted magnetic steel is fixed by using rivets and magnetic sleeves (stainless steel, copper, annular oxygen and the like) made of various materials, and the like, so that the problems that the cost of the magnetic steel is increased, the power density of the motor is reduced due to the increase of air gaps (the distance between the magnetic steel and an inner ring of a stator is increased due to the need of fixing by using the rivets or the magnetic sleeves), the manufacturing process of the rotor is complex, the reliability of the rotor in long-term working is reduced, and the like are generally existed in the mode. Still have some brushless motor, especially high-speed brushless motor, adopt embedded straight plate magnet steel, rotor core goes out the magnet steel groove that is used for placing the magnet steel through stamping process, the cost of rotor manufacturing has been reduced to this kind of mode, the reliability of rotor long-term operation has been improved, but because the existence of rotor core between magnet steel groove and the magnet steel groove, cause to form the magnetic leakage way that is independent of brushless motor main magnetic path through these passageways between magnet steel and the magnet steel, the magnetic leakage flux generally accounts for more than 6% of main magnetic flux, cause the local overheat of motor rotor, motor power density reduces, results such as efficiency reduction. In addition, in the prior art, no matter a surface-mounted or embedded magnetic steel fixing mode is adopted, when the back electromotive force waveform of the motor needs to be adjusted, the size of the magnetic steel can be correspondingly adjusted by changing the shape of the salient pole of the rotor, so that the operation of adjusting the back electromotive force waveform is very complex and the cost is high.
Disclosure of Invention
The invention aims to provide a modularized embedded motor rotor and a motor, which can effectively solve the problems of air gap increase and magnetic flux leakage easily caused by a magnetic steel fixing mode in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides an embedded electric motor rotor of modularization, includes rotor core and insulating support, insulating support and rotor core mould plastics as an organic whole through metal inserts injection molding process, form a plurality of magnet steel grooves that are cyclic annular range between insulating support and the rotor core, the magnet steel inslot is equipped with the magnet steel, and is adjacent leak protection magnetism clearance has between the magnet steel, insulating support mould plastics form with the spacing arch of leak protection magnetism clearance looks adaptation for carry on spacingly to the magnet steel.
Preferably, the cross section of rotor core is regular polygon, rotor core includes a plurality of side portions, each form between side portion and the insulating support the magnetic steel groove. Adopt the rotor core of this structure, utilize rotor core's side portion and insulating support to form the magnetic steel groove, the rotor core of this structure is convenient for process on the one hand, on the other hand because the rotor core of this structure can form the contained angle between adjacent side portion, the magnet steel setting has one side and side portion laminating in the magnet steel groove in other words to the magnet steel, utilizes this contained angle to be convenient for form the leak protection magnetism clearance between the adjacent magnet steel like this.
Preferably, a first magnetic conduction block is further arranged in the magnetic steel groove, the first magnetic conduction block, the insulating support and the rotor core are integrated through injection molding of a metal insert, and the magnetic steel is located between the first magnetic conduction block and the side face portion. Set up first magnetic conduction piece and can not influence the magnet steel work in the magnetism steel groove, on this basis, the size in magnetism steel groove need not change, just can change the size of magnet steel through the size that changes the first magnetic conduction piece as the inserts, also need not just like among the prior art to the design size of rotor core itself carry out great change, injection mold in this scheme itself also need not to change even, has so simple and convenient the operation of adjusting the back electromotive force wave form greatly, and the cost is very low.
Preferably, the adjacent first magnetic conduction blocks are provided with mutually-oriented limiting grooves, and the insulating bracket is provided with a lug matched with the limiting groove and used for limiting the first magnetic conduction blocks. The stability of being connected between insulating support and the first magnetic conduction piece is improved.
Preferably, rotor core includes annular yoke portion and salient pole portion, salient pole portion evenly is equipped with a plurality ofly along annular yoke portion outer lane circumference, and is adjacent form between the internal surface of salient pole portion, the outer lane face of annular yoke portion and the insulating support the magnet steel slot, and adjacent form between the salient pole portion leak protection magnetic gap. A rotor core with a salient pole type structure is adopted, and a magnetic steel slot is formed between adjacent salient poles.
Preferably, a second magnetic conduction block is further arranged in the magnetic steel groove, and the second magnetic conduction block, the insulating support and the rotor core are integrated through injection molding of a metal insert. Set up the second magnetic conduction piece and can not influence the magnet steel work in the magnetism steel groove, on this basis, the size in magnetism steel groove need not change, just can change the size of magnet steel through the size that changes the second magnetic conduction piece as the inserts, also need not just like among the prior art to carry out great change to the design size of rotor core itself, injection mold in this scheme itself also need not to change even, has so simple and convenient the operation of adjusting the back electromotive force wave form greatly, and the cost is very low.
Preferably, the insulation support comprises an upper end cover, a lower end cover and a connecting part, the connecting part is connected between the upper end cover and the lower end cover, the upper end cover and the lower end cover are matched to fix the magnetic steel along the axial direction, and the connecting part and the rotor core are matched to fix the magnetic steel along the radial direction. Firstly, the insulating support of the structure forms good insulating protection for the rotor, and secondly, the insulating support can be matched with the rotor core to fix the magnetic steel.
Preferably, the insulating support is provided with a jack for inserting the magnetic steel into the magnetic steel groove, and the insulating support is further provided with a closing part for closing the jack after the magnetic steel is inserted into the magnetic steel groove. The jack is arranged, so that the magnetic steel can be conveniently inserted into the magnetic steel groove, the closing part is arranged to ensure the stability of the magnetic steel after the magnetic steel is inserted into the magnetic steel groove, and the magnetic steel is prevented from falling off.
Preferably, the insulating support is provided with a through hole, and the through hole is used for exposing the outer surface of the rotor core facing the inner ring surface of the stator. The through holes can reduce the use of injection molding materials, reduce the cost and simultaneously reduce the whole weight of the rotor, and can improve the heat dissipation performance of the rotor core.
In order to solve the technical problems, the invention also adopts the following technical scheme: a motor comprises a stator, a rotor and a motor support, wherein the stator is fixedly connected to the motor support, the rotor is rotatably connected to the motor support, and the rotor is any one of the technical schemes. By adopting the motor rotor, the motor has the advantages of higher efficiency, less possibility of heating, longer service life and higher reliability in use.
Compared with the prior art, the invention has the following beneficial effects: compared with a surface-mounted magnetic steel fixing mode, the surface-mounted magnetic steel fixing method has the advantages that the rotor core is placed into the injection mold as the metal insert, the insulation support integrated with the rotor core is manufactured through the injection molding process, the plurality of annularly arranged magnetic steel grooves are formed between the insulation support and the rotor core, the magnetic steel is placed in the magnetic steel grooves, and the magnetic steel is fixed through the cooperation of the insulation support and the rotor core, so that the magnetic steel is not fixed through rivets or magnetic sleeves, the air gap between the rotor and the inner ring of the stator is not increased, and the motor efficiency is not influenced. Compared with the fixing mode of the embedded magnetic steel for stamping the magnetic steel slot on the rotor core, the invention forms the magnetic leakage prevention gap between the adjacent magnetic steels, namely, the gap with low magnetic permeability is arranged, so that a magnetic leakage path independent from the main magnetic path of the brushless motor cannot be formed between the magnetic steels, and further the magnetic leakage is greatly reduced, therefore, the motor can not easily generate heat relatively, and the single use time and the service life of the motor can be prolonged.
In addition, the motor rotor provided by the invention has the advantages that the insulating support and the rotor core are combined into a whole in an injection molding mode, the manufacturing process is simple and convenient, the production efficiency is high, the cost is low, the connection structure is very stable, and the reliability of long-term work is very high.
Drawings
Fig. 1 is a schematic structural diagram of a modular embedded motor rotor according to a first embodiment;
fig. 2 is an exploded view of a modular embedded motor rotor according to an embodiment;
fig. 3 is a cross-sectional view of a modular embedded electric machine rotor according to an embodiment;
fig. 4 is a sectional view of a modular embedded motor rotor provided in the second embodiment, except for an insulating support;
FIG. 5 is a cross-sectional view of an insulating support in the second embodiment;
fig. 6 is an exploded view of a modular embedded motor rotor according to a third embodiment;
fig. 7 is a sectional view of a modular embedded motor rotor provided by a third embodiment, except for an insulating support;
the fourth embodiment of fig. 8 provides a cross-sectional view of a modular embedded electric machine rotor with the exception of an insulating support.
The magnetic rotor comprises a rotor core 1, a side face portion 10, an annular yoke portion 11, a salient pole portion 12, an insulating support 2, an upper end cover 20, a lower end cover 21, a jack 210, a connecting portion 22, a limiting protrusion 220, a lug 2200, a through hole 221, a magnetic steel groove 3, magnetic steel 4, a magnetic leakage preventing gap 40, a first magnetic conduction block 5, a limiting groove 50, a second magnetic conduction block 6, a rotor shaft 7 and a shaft sleeve 70.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected or detachably connected or integrated; may be mechanically coupled, may be electrically coupled or may be in communication with each other; may be directly connected or indirectly connected through an intermediate, unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The first embodiment is as follows: as shown in fig. 1, the present embodiment provides an embedded electric motor rotor of modularization, including rotor core 1, rotor shaft 7 and insulating support 2, wherein rotor core 1 central authorities offer the shaft hole that is used for with rotor shaft 7 assembly, and rotor shaft 7 passes through axle sleeve 70 and assembles to the shaft hole in, realizes rotor core 1 and rotor shaft 7's fixed connection. The insulating support 2 and the rotor core 1 in the embodiment are integrated through injection molding of a metal insert, specifically, the rotor core 1 is placed into an injection mold as a metal insert, then an injection molding material in a molten state is extruded into the injection mold to form the rotor core 1 through injection molding, and finally the rotor core 1 and the insulating support 2 are integrated through injection molding. The injection molding material adopted in this embodiment is PA66 injection molding material, which has a good insulation effect, and forms a good insulation effect on the surface of the rotor core 1, and it can be understood that other injection molding materials with insulation properties may also be adopted. Referring to fig. 2 and 3, a plurality of magnetic steel grooves 3 arranged in an annular shape are formed between the insulating support 2 and the rotor core 1, magnetic steel 4 is arranged in each magnetic steel groove 3, a magnetic leakage preventing gap 40 is formed between adjacent magnetic steel 4, and the insulating support 2 is injection-molded to form a limiting protrusion 220 matched with the magnetic leakage preventing gap 40 and used for limiting the magnetic steel 4. For the 4 fixed modes of magnet steel of table subsides formula, this electric motor rotor that this embodiment provided puts into injection mold through regarding rotor core 1 as metal insert, adopt injection molding process to make and rotor core 1 insulating support 2 as an organic whole that combines, and form a plurality of magnet steel grooves 3 that are cyclic annular range between insulating support 2 and rotor core 1, magnet steel 4 is placed to magnet steel groove 3, utilize insulating support 2 and rotor core 1 to cooperate fixed magnet steel 4, need not to fix magnet steel 4 with the help of rivet or magnetic sleeve like this, just can not increase the air gap between rotor and the stator inner circle yet, thereby can not influence motor efficiency. For the embedded magnet steel 4 fixed mode that becomes magnet steel groove 3 on rotor core 1, this electric motor rotor that this embodiment provided is through forming leak protection magnetic gap 40 between adjacent magnet steel 4, also because be equipped with the clearance of low magnetic conduction, lead to unable formation leakage magnetic circuit independent of brushless motor main magnetic circuit between magnet steel 4 and the magnet steel 4, and then reduce the magnetic leakage by a wide margin, the motor can not generate heat relatively speaking like this, long and life when the single use that can improve the motor. In addition, the motor rotor provided by the embodiment combines the insulating support 2 and the rotor core 1 into a whole in an injection molding mode, so that the manufacturing process is simple and convenient, the production efficiency is high, the cost is low, the connection structure is very stable, and the reliability of long-term work is very high.
Specifically, in the present embodiment, the cross section of the rotor core 1 is a regular decagon, the rotor core 1 includes ten side portions 10, and the magnetic steel slot 3 is formed between each side portion 10 and the insulating support 2, which can be understood as a regular polygon including other numbers of side portions 10. Adopt rotor core 1 of this structure, utilize rotor core 1's side portion 10 and insulating support 2 to form magnetic steel groove 3, the rotor core 1 of this structure is convenient for process on the one hand, on the other hand because rotor core 1 of this structure can form the contained angle between adjacent side portion 10, magnet steel 4 sets up and has one side and side portion 10 laminating in magnet steel groove 3 in other words magnet steel 4, utilize this contained angle to be convenient for form the leak protection magnetism clearance 40 between the adjacent magnet steel 4 like this.
The insulating support 2 in this embodiment includes an upper end cover 20, a lower end cover 21 and a connecting portion 22, where the connecting portion 22 is connected between the upper end cover 20 and the lower end cover 21 to form a good insulating layer, and forms the magnetic steel slot 3 in cooperation with the rotor core 1. In this embodiment, the side surface portion 10 of the rotor core 1, the inner surface of the upper end cover 20, the inner surface of the lower end cover 21, and the inner surface of the connecting portion 22 form the magnetic steel slot 3, and the magnetic steel 4 is placed in the magnetic steel slot 3 to fix the magnetic steel 4 to the rotor core 1. Specifically to in this embodiment, upper end cover 20 and lower end cover 21 cooperate and are used for producing spacing fixed action to magnet steel 4 along the axial, and side portion 10 and the cooperation of connecting portion 22 are used for producing spacing fixed action to magnet steel 4 along radially, and spacing arch 220 that sets up on connecting portion 22 is used for producing spacing fixed action to magnet steel 4 along circumference. In this embodiment, the connecting portion 22 is further provided with a through hole 221, and the through hole 221 is used for exposing the outer surface of the rotor core 1 facing the inner ring surface of the stator, so that on one hand, the use of injection molding materials can be reduced, the cost is reduced, the overall weight of the rotor is reduced, and on the other hand, the heat dissipation performance of the rotor core 1 can be improved. However, it should be noted that the size of the through hole 221 cannot affect the fixing effect of the connecting portion 22 on the magnetic steel 4, that is, the through hole 221 cannot be too large in order to prevent the magnetic steel 4 from falling off from the through hole 221.
In order to facilitate the assembly of the magnetic steel 4 and the rotor core 1, in this embodiment, the insulating support 2 is further provided with a jack 210 for inserting the magnetic steel 4 into the magnetic steel slot 3, and in order to ensure the connection stability after the assembly, the insulating support 2 is further provided with a closing member for closing the jack 210 after the magnetic steel 4 is inserted into the magnetic steel slot 3. So-called closures can be provided with a cover, on which a plug-in piece is provided that is adapted to the receptacle 210 and is designed to be an interference fit with the receptacle 210; or the sealing cover is a fully-closed disk matched with the size of the lower end cover 21, and the effect of closing the jack 210 can also be achieved by directly fastening the sealing cover and the lower end cover 21 together in a threaded connection mode.
Example two: as shown in fig. 4 and fig. 5, the present embodiment of the modular embedded motor rotor differs from the first embodiment in that a first magnetic conductive block 5 is further disposed in a magnetic steel slot 3, and the first magnetic conductive block 5, an insulating support 2 and a rotor core 1 are integrated by injection molding through a metal insert injection molding process, that is, the first magnetic conductive block 5 and the rotor core 1 are placed into an injection mold together as a metal insert, and the insulating support 2 is manufactured through the injection molding process, so that an integrated structure of the first magnetic conductive block 5, the rotor core 1 and the insulating support 2 is finally obtained.
Based on above-mentioned difference technical characteristics, set up first magnetic conduction piece 5 and can not influence magnet steel 4 work in magnet steel groove 3, on this basis, magnet steel groove 3's size need not change, just can change magnet steel 4's size through the size that changes first magnetic conduction piece 5 as the inserts, also need not just like among the prior art to carry out great change to the design size of rotor core 1 itself, injection mold itself in this scheme also need not to change even, the operation of adjusting the back emf wave form has so greatly portably, and the cost is very low.
In this embodiment, the adjacent first magnetic conductive blocks 5 are further provided with mutually facing limiting grooves 50, the insulating bracket 2 is provided with a projection 2200 adapted to the limiting grooves 50, specifically, the projection 2200 is formed on the limiting protrusion 220 of the connecting portion 22 during injection molding, so as to limit the first magnetic conductive blocks 5, thereby improving the connection stability between the insulating bracket 2 and the first magnetic conductive blocks 5. In this embodiment, since the bump 2200 can limit the magnetic steel 4 in the radial direction by the first magnetic conductive block 5, the outer ring surface of the insulating bracket 2 in this embodiment can be made flush with the outer ring surface of the first magnetic conductive block 5.
In addition, the position of the first magnetic conduction block 5 is set to make the magnetic steel 4 be located between the first magnetic conduction block 5 and the rotor core 1, that is, the first magnetic conduction block 5 is located outside the magnetic steel 4, because the rotor needs to form the structure of the outer circular surface to match with the inner circular surface of the stator, the setting only needs to process the outer side surface of the first magnetic conduction block 5 into the circular arc surface, and the shape of the magnetic steel 4 can be simply designed into a plate shape, so that the processing difficulty is reduced.
Example three: the present embodiment also provides a modular embedded motor rotor, as shown in fig. 6 and 7, which is different from the first embodiment or the second embodiment in that the structure of the rotor core 1 in the present embodiment is different, specifically, the rotor core 1 in the present embodiment includes a ring-shaped yoke portion 11 and salient pole portions 12, the salient pole portions 12 are uniformly provided in a plurality along the circumferential direction of the outer ring of the ring-shaped yoke portion 11, accordingly, in the present embodiment, the magnetic steel slots 3 are formed between the inner surface of the adjacent salient pole portions 12, the outer ring surface of the ring-shaped yoke portion 11, the inner surface of the upper end cover 20, the inner surface of the lower end cover 21 and the inner surface of the connecting portion 22 of the insulating support 2, and the magnetic leakage preventing gaps 40 are formed between the adjacent salient pole portions 12.
Based on the above distinguishing technical features, since the magnetic steel 4 in this embodiment does not need to be located outside the rotor core 1 as in the first embodiment or the second embodiment, the shape and structure of the magnetic steel 4 can be selected more, and the processing is convenient. In addition, due to the structure of the salient pole rotor itself, the magnetic leakage preventing gap 40 formed by the salient pole rotor has a dovetail groove-like structure, and thus the corresponding limiting protrusion 220 on the insulating support 2 also has the structure with the shape, so that the limiting protrusion 220 in the embodiment can have a better limiting and fixing effect when being matched with the magnetic leakage preventing gap 40, and it should be noted that the limiting protrusion 220 in the embodiment plays a role in limiting the magnetic steel 4 along the radial direction.
Example four: as shown in fig. 8, the difference between the present embodiment and the third embodiment is that a second magnetic conducting block 6 is further disposed in the magnetic steel slot 3, and the second magnetic conducting block 6, the insulating support 2 and the rotor core 1 are integrated by injection molding through a metal insert injection molding process.
Based on above-mentioned difference technical characteristics, set up second magnetic conduction piece 6 and can not influence magnet steel 4 work in magnet steel groove 3, on this basis, magnet steel groove 3's size need not change, just can change magnet steel 4's size through the size that changes second magnetic conduction piece 6 as the inserts, also need not just like among the prior art to carry out great change to the design size of rotor core 1 itself, injection mold itself in this scheme also need not to change even, the operation of adjusting the back emf wave form has so greatly portably, and the cost is very low.
It should be further noted that, compared with the embodiment, in the embodiment, because the shape of the second magnetic conduction block 6 does not need to process an arc surface on the outer side surface, the processing is more convenient, and the operation difficulty of adjusting the back electromotive force waveform can be further reduced.
Example five: in order to solve the above technical problems, the present invention further adopts the following technical solutions: a motor comprises a stator, a rotor and a motor support, wherein the stator is fixedly connected to the motor support, the rotor is rotatably connected to the motor support, and the rotor is a modular embedded motor rotor in any one of the technical schemes. By adopting the motor rotor, the motor has the advantages of higher efficiency, less possibility of heating, longer service life and higher reliability in use.
The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto, and any changes or modifications within the scope of the present invention by those skilled in the art are covered by the present invention.
Claims (10)
1. A modular embedded electric machine rotor characterized in that: including rotor core and insulating support, insulating support and rotor core mould plastics as an organic wholely through metal inserts injection molding process, form a plurality of magnet steel grooves that are cyclic annular range between insulating support and the rotor core, the magnet steel inslot is equipped with the magnet steel, and is adjacent leak protection magnetism clearance has between the magnet steel, insulating support mould plastics form with the spacing arch of leak protection magnetism clearance looks adaptation for carry on spacingly to the magnet steel.
2. A modular embedded electric machine rotor as claimed in claim 1, characterized in that: the cross section of rotor core is regular polygon, rotor core includes a plurality of side portions, every form between side portion and the insulating support the magnetism steel slot.
3. A modular embedded electric machine rotor as claimed in claim 2, characterized in that: still be equipped with first magnetic conduction piece in the magnetic steel groove, first magnetic conduction piece is as an organic whole through metal inserts injection molding process with insulating support and rotor core, and the magnet steel is located between first magnetic conduction piece and the side portion.
4. A modular embedded electric machine rotor as claimed in claim 3, characterized in that: and adjacent limiting grooves facing each other are formed in the first magnetic conduction blocks, and lugs matched with the limiting grooves are formed on the limiting protrusions in an injection molding mode and used for limiting the first magnetic conduction blocks.
5. A modular embedded electric machine rotor as claimed in claim 1, characterized in that: rotor core includes annular yoke portion and salient polar part, salient polar part evenly is equipped with a plurality ofly along annular yoke portion outer lane circumference, and is adjacent form between the internal surface of salient polar part, the outer lane face of annular yoke portion and the insulating support the magnet steel groove, and adjacent form between the salient polar part leak protection magnetic gap.
6. A modular embedded electric machine rotor as claimed in claim 5, characterized in that: and a second magnetic conduction block is further arranged in the magnetic steel groove, and the second magnetic conduction block, the insulating bracket and the rotor core are integrally molded through a metal insert injection molding process.
7. A modular embedded electric machine rotor as claimed in any one of claims 1 to 6, characterized in that: the insulating support comprises an upper end cover, a lower end cover and a connecting part, the connecting part is connected between the upper end cover and the lower end cover, the upper end cover and the lower end cover are matched to fix the magnetic steel along the axial direction, and the connecting part and the rotor core are matched to fix the magnetic steel along the radial direction.
8. A modular embedded electric machine rotor as claimed in claim 7, wherein: the lower end cover is provided with a jack for inserting the magnetic steel into the magnetic steel groove, and the lower end cover is also provided with a closing part for closing the jack after the magnetic steel is inserted into the magnetic steel groove.
9. A modular embedded electric machine rotor as claimed in claim 7, wherein: the connecting portion is provided with a through hole, and the through hole is used for enabling the rotor core to be exposed towards the outer surface of the inner ring surface of the stator.
10. The utility model provides a motor, includes stator, rotor and motor support, stator fixed connection is on motor support, the rotor rotates to be connected on motor support, its characterized in that: the rotor is a modular embedded electric machine rotor as claimed in any one of claims 1 to 9.
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| CN202110569051.6A CN113364175A (en) | 2021-05-25 | 2021-05-25 | Modularized embedded motor rotor and motor |
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| CN202110569051.6A CN113364175A (en) | 2021-05-25 | 2021-05-25 | Modularized embedded motor rotor and motor |
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