CN106712348A - Rotor core, rotor and motor with same - Google Patents
Rotor core, rotor and motor with same Download PDFInfo
- Publication number
- CN106712348A CN106712348A CN201611226568.0A CN201611226568A CN106712348A CN 106712348 A CN106712348 A CN 106712348A CN 201611226568 A CN201611226568 A CN 201611226568A CN 106712348 A CN106712348 A CN 106712348A
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- China
- Prior art keywords
- punching
- teeth portion
- rotating shaft
- rotor core
- rotor
- 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.)
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Classifications
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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]
Abstract
The invention discloses a rotor core, a rotor and a motor with the same. The rotor core comprises a shaft sleeve ring and multiple teeth. The shaft sleeve ring is internally provided with a shaft hole for installing a shaft, and is formed by laminating multiple circular punching sheets. The multiple teeth are arranged at the periphery of the shaft sleeve ring, and every two adjacent teeth are spaced apart along the circumference of the shaft sleeve ring to define a slot for installing magnet steel. Each tooth is formed by laminating multiple tooth punching sheets along the axis of the shaft sleeve ring. In the multiple tooth punching sheets of each tooth and in the multiple tooth punching sheets in the same lamination layer, there is at least one tooth punching sheet of which the inner end in the radial direction of the shaft sleeve ring is spaced apart from the circular punching sheets, and there is at least one tooth punching sheet of which the inner end is connected with the circular punching sheets through a connecting part. According to the rotor core provided by the embodiment of the invention, leakage flux can be reduced, and the efficiency of the motor can be improved.
Description
Technical field
The present invention relates to technical field of motors, more particularly, to a kind of rotor core, rotor and the motor with it.
Background technology
At present, in order to meet the requirement of motor efficiency, generally used using the rotor structure (SPM) of Surface Mount magnet steel more than motor
Increase the mode of the axial length of magnet steel, air gap flux density is increased using poly- magnetic effect, efficiency is improved, the shortcoming of the method is magnetic
The poly- magnetic efficiency of steel is low.
It is low in order to solve the problems, such as above-mentioned poly- magnetic efficiency in correlation technique, carried using the rotor structure (IPM) of Interior permanent magnet
Poly- magnetic energy power high, rotor is internally provided with the connecting portion of the connection rotating shaft collar and each teeth portion punching, electric efficiency in IPM structures
It is relatively low.
The content of the invention
The application is that the discovery of following facts and problem and understanding are made based on inventor：
, with the rotating shaft collar be connected for each teeth portion punching using connecting portion by the motor in correlation technique, thus magnet steel inner side
Part can form leakage field by the connecting portion on magnet steel both sides, when each teeth portion punching is connected by connecting portion with the rotating shaft collar, even
Socket part quantity is more, causes magnet steel leakage field to increase, and electric efficiency is substantially reduced.
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.Therefore, the present invention is carried
A kind of rotor core is gone out, the rotor core can reduce leakage field, improve electric efficiency.
The invention allows for a kind of motor with above-mentioned rotor core and rotor and with the rotor.
Rotor core according to embodiments of the present invention, including：The rotating shaft collar and multiple teeth portion, are provided with the rotating shaft collar
For installing the axis hole of rotating shaft and being overrided to form by the punchings of multiple annular；Multiple teeth portion are located at the periphery of the rotating shaft collar
And two adjacent teeth portion are opened to limit the groove portion for mounting magnetic steel along the circumferentially-spaced of the rotating shaft collar, each
The teeth portion is overrided to form by multiple teeth portion punchings along the axial direction of the rotating shaft collar, wherein, the multiple described tooth of each teeth portion
There is teeth portion punching described at least one respectively described in portion's punching and the multiple described teeth portion punching in same laminate
Radially inner of the rotating shaft collar is spaced apart and has respectively described in teeth portion punching described at least one with the annular punching
It is inner to be connected by connecting portion with the annular punching.
Rotor core according to embodiments of the present invention, reduces the quantity of connecting portion, such that it is able to reduce leakage field, improves electricity
Engine efficiency.
In addition, rotor core according to the above embodiment of the present invention can also have following additional technical characteristic：
Some embodiments of the invention, the quantity of the teeth portion is N number of, in same laminate, the n teeth portion
Described the inner of punching is connected by connecting portion with the outer peripheral face of the annular punching, wherein, N is that even number and n meet：0 ＜ n≤
N/2。
Alternatively, at least one laminate, the teeth portion punching that is connected with the annular punching and with the ring
Shape punching interval the teeth portion punching along the rotating shaft collar the alternate setting of circumference.
Further, in each described laminate, the teeth portion punching that is connected with the annular punching and with it is described
The teeth portion punching at annular punching interval along the rotating shaft collar the alternate setting of circumference, in the two neighboring laminate
The connecting portion is mutually laminated or staggered setting along the circumference of the rotating shaft collar.
Some embodiments of the invention, in multiple laminates, the teeth portion punching being connected with the annular punching
The quantity of piece is identical.
Some embodiments of the invention, each described teeth portion punching is interior small along radially extending into for the rotating shaft collar
Outer big sector, the connecting portion is formed as the connection sheet for radially extending along the rotating shaft collar, along the rotating shaft collar
Circumference on, the inner extension size of the extension size of the connection sheet less than or equal to the teeth portion punching.
Some embodiments of the invention, each described teeth portion punching exists in the outer end radially of the rotating shaft collar
Extend away from each other and use substantially along the circumferential of the rotating shaft collar along being respectively arranged at two ends with the circumference of the rotating shaft collar
In the location division for positioning the magnet steel.
Alternatively, in the two neighboring teeth portion punching location division is connected or spaced apart.
Alternatively, the thickness L of each teeth portion punching meets：0.2mm≤L≤1mm.
Some embodiments of the invention, the outer peripheral face of the rotating shaft collar is provided with and a pair of multiple groove portions 1
Should and for positioning the positioning convex portion of the magnet steel.
Alternatively, each described annular punching is provided with along its circumferentially spaced multiple positioning convex, multiple described
Positioning convex in annular punching along the annular punching to laminate that direction is connected to form be positioning convex strip, the positioning convex strip structure
Into the positioning convex portion.
Some embodiments of the invention, the outer end of each teeth portion be provided with along the rotating shaft collar axially through
The through hole of the teeth portion.
Alternatively, each described teeth portion has multiple through holes, multiple center lines of the through hole on the teeth portion
Symmetrically.
Some embodiments of the invention, the connecting portion and the coupled teeth portion punching and the annular punching
Piece integrated punching is formed.
Rotor according to embodiments of the present invention, including rotor core according to the above embodiment of the present invention and multiple magnet steel,
Multiple magnet steel are corresponded and are located in multiple groove portions.
Rotor according to embodiments of the present invention, by setting rotor according to the above embodiment of the present invention, can effectively carry
The utilization rate of magnet steel high, lifting motor efficiency.
Some embodiments of the invention, at least one of the magnet steel and the rotor core it is plastic treatment with
Non-magnetic part is formed in the rotor.
Alternatively, the axial two ends of the rotor respectively it is plastic treatment be formed with non-magnetic end cap, each is described non-magnetic
End cap is connected with the non-magnetic part.
Alternatively, the covered material used by plastic treatment is BMC, PBT or epoxy resin.
Some embodiments of the invention, the same polarity of the two neighboring magnet steel is relative.
Motor according to embodiments of the present invention, including：Stator and rotor according to the above embodiment of the present invention, the stator
Inside it is provided with stator hole；The rotor is rotatably arranged in the stator hole.
Motor according to embodiments of the present invention, by setting rotor according to the above embodiment of the present invention, can effectively subtract
The leakage field of small magnet steel, improves the utilization rate of magnet steel, lifting motor efficiency.
Additional aspect of the invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by practice of the invention.
Brief description of the drawings
Fig. 1 is a top view for laminate of rotor core according to some embodiments of the invention；
Fig. 2 is a top view for laminate according to other embodiment rotor cores of the invention, wherein, a groove portion
In magnet steel is installed；
Fig. 3 is the stereogram of rotor core according to some embodiments of the invention；
Fig. 4 is the stereogram of rotor core in accordance with another embodiment of the present invention；
Fig. 5 is the stereogram of the rotor core according to still other embodiments of the present invention；
Fig. 6 is the stereogram of rotor according to some embodiments of the invention；
Fig. 7 is the stereogram of the rotor according to other embodiments of the invention；
Fig. 8 is the flow chart of the manufacture method of rotor core according to embodiments of the present invention.
Reference：
1000：Rotor；
100：Rotor core；200：Magnet steel；300：Non-magnetic part；400：Non-magnetic end cap；
11：The rotating shaft collar；12：Teeth portion；13：Connecting portion；15：Positioning convex portion；16：Through hole；
101：Laminate；110：Annular punching；120：Teeth portion punching；130：Groove portion；140：Location division；150：Convex
Rise；
1011：First laminates group；1012：Second laminates group；1013：3rd laminates group；
111：Axis hole.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings.Below with reference to
The embodiment of Description of Drawings is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention, ability
The those of ordinary skill in domain can be changed to above-described embodiment, change, replacing and modification within the scope of the invention.
In the description of the invention, it is to be understood that term " " center ", " thickness ", " interior ", " outward ", " axial direction ", " footpath
To ", the orientation of the instruction such as " circumference " or position relationship be, based on orientation shown in the drawings or position relationship, to be for only for ease of and retouch
The present invention is stated to be described with simplified, must be with specific orientation, with specific rather than the device or element for indicating or imply meaning
Azimuth configuration and operation, therefore be not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In the description of the invention, " multiple " is meant that at least two, such as two, three
It is individual etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be with
It is the first and second feature directly contacts, or the first and second features are by intermediary mediate contact.And, fisrt feature exists
Second feature " on ", " top " and " above " can be fisrt feature directly over second feature or oblique upper, or only table
Show that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
Fisrt feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second feature.
First below rotor core 100 according to embodiments of the present invention is described in detail with reference to accompanying drawing.
Shown in reference picture 1- Fig. 5, rotor core 100 according to embodiments of the present invention includes：The rotating shaft collar 11 and multiple teeth
Portion 12.
Specifically, as shown in Figure 3-Figure 5, axis hole 111 can be provided with the rotating shaft collar 11, axis hole 111 is used to install and turns
Axle, the rotating shaft collar 11 can be overrided to form by the punching 110 of multiple annulars.
Multiple teeth portion 12 can be located at the periphery of the rotating shaft collar 11, and adjacent two teeth portion 12 are along the rotating shaft collar 11
Circumferentially-spaced to open to form groove portion 130, groove portion 130 can be used for mounting magnetic steel 200, and each teeth portion 12 can be by multiple teeth portion punchings
120 are overrided to form along the axial direction of the rotating shaft collar 11, simple structure and compact.In other words, each teeth portion 12 is by multiple teeth portion punchings
120 are overrided to form, and multiple teeth portion 12 form groove in the circumferentially-spaced setting of the rotating shaft collar 11 between two adjacent teeth portion 12
Portion 130, magnet steel 200 is adapted to mount in groove portion 130.
Wherein, multiple teeth portion punchings 120 of each teeth portion 12 and the multiple teeth portion punchings in same laminate 101
There is at least one teeth portion punching 120 to be spaced apart with annular punching 110 in the inner radially of the rotating shaft collar 11 in 120 respectively,
And have respectively in multiple teeth portion punchings 120 of each teeth portion 12 and the multiple teeth portion punchings 120 in same laminate 101
The inner of at least one teeth portion punching 120 is connected with annular punching 110 by connecting portion 13.
That is, in multiple teeth portion punchings 120 of each teeth portion 12, having at least one teeth portion punching 120 in rotating shaft set
The inner radially of ring 11 is spaced apart with annular punching 110, and has the inner and annular punching of at least one teeth portion punching 120
110 are connected by connecting portion 13.Also, in the multiple teeth portion punchings 120 in same laminate 101, there is at least one tooth
Portion's punching 120 is spaced apart in the inner radially of the rotating shaft collar 11 with annular punching 110, and has at least one teeth portion punching
120 the inner is connected with annular punching 110 by connecting portion 13.
For example, in example as shown in Figure 3, in multiple teeth portion punchings 120 of each teeth portion 12, there can be four
Teeth portion punching 120 is spaced apart in the inner radially of the rotating shaft collar 11 with annular punching 110, remaining teeth portion punching 120
The inner can be connected by connecting portion 13 with annular punching 110.
Again for example, in example as shown in Figure 1, in eight teeth portion punchings 120 in same laminate 101, can
To there is four teeth portion punchings 120 to be spaced apart with annular punching 110 in the inner radially of the rotating shaft collar 11, four additional teeth portion
The inner of punching 120 is connected by connecting portion 13 with annular punching 110 respectively.
Certainly, in each teeth portion 12, the inner teeth portion punching 120 being spaced apart with annular punching 110 and the inner can pass through
The teeth portion punching 120 that connecting portion 13 is connected with annular punching 110 can also be other quantity, and, in same laminate 101
Interior, the inner teeth portion punching 120 being spaced apart with annular punching 110 and the inner can be by connecting portion 13 and the annular phases of punching 110
Teeth portion punching 120 even can also be other quantity, and this will be understood by one skilled in the art, herein no longer
Describe in detail.
Thus, in the axial direction of the rotating shaft collar 11, multiple teeth portion punchings 120 of each teeth portion 12 can by this at least one
It is inner to be connected with the rotating shaft collar 11 by the teeth portion punching 120 that connecting portion 13 is connected with annular punching 110, by each teeth portion 12
It is connected with the rotating shaft collar 11.And, in each teeth portion 12, at least one teeth portion punching 120 being spaced apart with annular punching 110 can
To reduce the quantity of connecting portion 13, such that it is able to reduce leakage field to a certain extent, the efficiency of motor is improved.Meanwhile, same
In laminate 101, at least one number that can reduce connecting portion 13 same with the teeth portion punching 120 that annular punching 110 is spaced apart
Amount, and then can further reduce leakage field, the efficiency of effective lifting motor.
Rotor core 100 according to embodiments of the present invention, by by multiple teeth portion punchings 120 of each teeth portion 12 and being in
Multiple teeth portion punchings 120 in same laminate 101 are set to have at least one teeth portion punching 120 respectively in the rotating shaft collar 11
The inner radially is spaced apart with annular punching 110, and is laminated by multiple teeth portion punchings 120 of each teeth portion 12 and in same
Multiple teeth portion punchings 120 in layer 101 are set to have respectively the inner and annular punching 110 of at least one teeth portion punching 120 to lead to
Cross connecting portion 13 to be connected, such that it is able to reduce the quantity of connecting portion 13, and then leakage field can be reduced, improve electric efficiency.
Some embodiments of the invention, the quantity of teeth portion 12 is N number of, in same laminate 101, n teeth portion punching
The inner of piece 120 is connected by connecting portion 13 with the outer peripheral face of annular punching 110, wherein, N is even number, and n satisfactions：0 ＜ n
≤N/2.That is, in same laminate 101, thering is N number of teeth portion punching 120 to be opened in along the circumferentially-spaced of annular punching 110
The periphery of annular punching 110, has n the inner of teeth portion punching 120 to pass through the outer peripheral face phase of connecting portion 13 and annular punching 110
Connect, wherein, n is at least one and is at most the half of N.
In other words, in the N number of teeth portion punching 120 in same laminate 101, have at least one and to mostly teeth portion rush
Piece 120 is connected by connecting portion 13 with annular punching 110.That is, in same laminate 101, the quantity of connecting portion 13 is at least
One and it is at most the half of the sum of teeth portion punching 120 in the laminate 101.Thus, it is possible to further reduce connecting portion 13
Quantity, effectively reduces the leakage field of the inboard portion of magnet steel 200, improves the utilization rate of magnet steel 200, the efficiency of lifting motor.
For example, in example as depicted in figs. 1 and 2, teeth portion 12 is eight, and in same laminate 101, four teeth portion
The inner of punching 120 is connected by connecting portion 13 with the outer peripheral face of annular punching 110, the inner of four additional teeth portion punching 120
Outer peripheral face with annular punching 110 is spaced apart.So, compared to each teeth portion 12 in correlation technique by connecting portion 13 and annular
The connected structure of punching 110, the quantity of connecting portion 13 can be reduced to the half of teeth portion punching 120, greatly reduce leakage field
Rate, can effectively improve the utilization rate of magnet steel 200, so can effective lifting motor efficiency.
In certain embodiments, rotor core 100 can be made up of multiple laminates 101, at least one laminate 101
In, the teeth portion punching 120 being connected with annular punching 110 and the teeth portion punching 120 being spaced with annular punching 110 can be along the rotating shaft collars
11 be provided at circumferentially spaced, to improve the structure diversity of rotor core 100, and can improve the coaxial of rotor core 100
The depth of parallelism of degree and the both ends of the surface of rotor core 100, so that lifting motor performance.
For example, in example as shown in Figure 3, eight teeth portion punchings 120 of each laminate 101 are located at annular punching
110 periphery, in the circumference of rotor core 100, between two adjacent teeth portion punchings 120 being connected with annular punching 110
A teeth portion punching 120 being spaced with annular punching 110, i.e., the four teeth portion punchings being connected with annular punching 110 can be provided with
120 and four being provided at circumferentially spaced along the rotating shaft collar 11 of teeth portion punching 120 being spaced with annular punching 110.
As optional implementation method, in each laminate 101, the teeth portion punching 120 that is connected with annular punching 110 and
The teeth portion punching 120 being spaced with annular punching 110 can be along the alternate setting of the circumference of the rotating shaft collar 11, two adjacent laminates
Connecting portion 13 in 101 can mutually be laminated or staggered setting along the circumference of the rotating shaft collar 11.
That is, in each laminate 101, the teeth portion punching 120 that is connected with annular punching 110 and with annular punching
The alternate setting in the circumference of the rotating shaft collar 11 of teeth portion punching 120 at 110 intervals, the connecting portion in two neighboring laminate 101
13 correspondingly can laminate or setting of staggering in the axial direction of the rotating shaft collar 11.Specifically, in two adjacent laminates 101
In, positioned at a laminate 101 and the teeth portion punching 120 that is connected with annular punching 110 and positioned at another laminate 101 and with
The connected teeth portion punching 120 of annular punching 110 is laminated, as shown in Figure 4 and Figure 5；Or, positioned at a laminate 101 and and ring
The connected teeth portion punching 120 of shape punching 110 and positioned at another laminate 101 and the teeth portion punching that is spaced with annular punching 110
120 laminate, as shown in Figure 3.That is, when laminating, two adjacent laminates 101 can rotate to an angle rotor core 100
Laminate, it is also possible to do not rotate and directly laminate.
For example, as shown in Figure 3-Figure 5, each laminate 101 can include that four teeth portion being connected with annular punching 110 are rushed
Piece 120 and four teeth portion punchings 120 being spaced with annular punching 110, and four teeth portion punchings being connected with annular punching 110
120 with four with the teeth portion punching 120 that annular punching 110 is spaced along the rotating shaft collar 11 the alternate setting of circumference.
In the example depicted in fig. 3, per the connecting portion 13 in two adjacent laminates 101 along the circumference of the rotating shaft collar 11
Stagger setting, i.e. rotated to an angle per two adjacent laminates 101 and laminated.
In the example depicted in fig. 4, rotor core 100 laminates group 1011 and second and laminates group 1012 including first, each
The connecting portion 13 in group per 101 kinds adjacent of two laminates is laminated to laminate mutually, first laminate group 1011 connecting portion 13 and
Second connecting portion 13 for laminating group 1012 staggers settings along the circumference of the rotating shaft collar 11, i.e. first laminates and organize laminating in 1011
Layer 101 does not rotate and directly laminates, and the second laminate 101 laminated in group 1012 does not rotate and directly laminates, and first laminates group
1011 and second laminate group 1012 and rotate to an angle and laminate.
And in the example depicted in fig. 5, rotor core 100 include laminate successively in the axial direction first laminate group 1011,
Second laminates group 1012 and the 3rd laminates group 1013, and each laminates the connecting portion 13 of every 101 kinds adjacent of two laminates in group
Laminate mutually, the second connecting portion 13 for laminating group 1012 laminates the connecting portion 13 of connecting portion 13 and the 3rd of group 1011 with first respectively
Stagger setting along the circumference of the rotating shaft collar 11, i.e. the first laminate 101 laminated in group 1011 does not rotate and directly laminates, second
The laminate 101 laminated in group 1012 does not rotate and directly laminates, and the 3rd laminates the laminate 101 organized in 1013 does not rotate directly yet
Laminate, and first laminates group 1011, second and laminates group 1012 and the 3rd and laminate group 1013 and rotate to an angle laminate successively.
Thus, the manufacture efficiency of rotor core 100 can be not only improved, and rotation is laminated and can improve rotor core
100 axiality.Meanwhile, the thickness error that the manufacturing process that rotation is laminated is produced when can teeth portion punching 120 be manufactured is turning
It is scatter in the circumference of axle sleeve ring 11, it is to avoid error is continuously accumulated, such that it is able to improve assembly precision, thus, rotor core 100
The depth of parallelism of both ends of the surface can get a promotion so that the performance of motor is more excellent.
Some embodiments of the invention, in multiple laminates 101, the teeth portion punching being connected with annular punching 110
120 quantity can be processed, the mould needed for reducing processing, such that it is able to save processing cost with identical such that it is able to convenient.
As depicted in figs. 1 and 2, each teeth portion punching 120 can radially extend into inner small and outside big fan along the rotating shaft collar 11
Shape, connecting portion 13 can be formed as along the connection sheet for radially extending of the rotating shaft collar 11, on along the circumference of the rotating shaft collar 11, even
The extension size of contact pin is smaller than being equal to the inner extension size of teeth portion punching 120.Thus, it is possible to reduce connecting portion 13 every
Shared area in individual laminate 101, further reduces the leakage field of the inboard portion of magnet steel 200.
Some embodiments of the invention, as depicted in figs. 1 and 2, each teeth portion punching 120 is in the footpath of the rotating shaft collar 11
Two ends of the upward outer end on along the circumference of the rotating shaft collar 11 can be respectively equipped with remote to each other substantially along the week of the rotating shaft collar 11
From extension and for the location division 140 of positioning magnetic steel 200, the stability and reliability built-in to improve magnet steel 200.In other words,
The outer end of two adjacent teeth portion punchings 120 is respectively equipped with the circumferentially adjacent location division 140 for extending each other, two adjacent teeth
Portion's punching 120, the rotating shaft collar 11 and two location divisions 140 can jointly limit groove portion 130, and magnet steel 200 can be arranged on groove portion 130
It is interior, and location division 140 can position from outer end to magnet steel 200, prevent the abjection from groove portion 130 of magnet steel 200, improve and turn
The stability and reliability of sub- iron core 100.
Alternatively, as shown in Fig. 2 the location division 140 in two adjacent teeth portion punchings 120 can be connected, with enclosed slot
The outer end in portion 130, i.e. groove portion 130 are configured to the ring seal groove of outer end closing, to improve the intensity of rotor core 100, so that
Improve the built-in stability of magnet steel 200.
Advantageously, the location division 140 in two adjacent teeth portion punchings 120 can be spaced apart, as shown in figure 1, making groove portion
130 outer end is that opening is set, so that the positioning that both can have realized to magnet steel 200 by location division 140, and magnetic can be reduced
The leakage field probability in the outside of steel 200, improves electric efficiency.
Alternatively, the thickness L of each teeth portion punching 120 can meet：0.2mm≤L≤1mm.That is, each teeth portion
The thickness L of punching 120 can between 0.2mm-1mm value, for example, the thickness L of each teeth portion punching 120 can be
0.25mm, 0.3mm, 0.5mm or 0.7mm.Certainly, structure not limited to this of the invention, the thickness of each teeth portion punching 120 is not limited
In above description, other values are can also be, this will be understood by for a person skilled in the art, it is no longer detailed herein
Description.
In certain embodiments, as shown in Figure 3-Figure 5, can be provided with the outer peripheral face of the rotating shaft collar 11 and multiple groove portions 130
Correspond and for the positioning convex portion 15 of positioning magnetic steel 200, positioning convex portion 15 can only support magnet steel 200, by magnet steel 200
It is placed in groove portion 130, coordinates the location division 140 of the outer end of groove portion 130, the stability and reliability of magnet steel 200 can be made higher.
Alternatively, as Figure 1-Figure 5, can be provided with circumferentially spaced multiple fixed along its in each annular punching 110
Position raised 150, positioning convex 150 in the punchings 110 of multiple annulars can along annular punching 110 laminate direction be connected to form for
Positioning convex strip, positioning convex strip may be constructed positioning convex portion 15.Thus, positioning convex portion 15 simple and compact for structure, good positioning effect,
And positioning convex 150 can be integrally machined with annular punching 110, the operation of processing and manufacturing is few, can save to a certain extent
Cost.
In addition, the construction of positioning convex portion 15 can be such that the medial surface of magnet steel 200 is spaced apart with the outer peripheral face of the rotating shaft collar 11
Gap is formed, in following process into during rotor, non-magnetic part 300 can be in the gap filled so that in magnet steel 200
The leakage field of survey is smaller, such that it is able to further improve the utilization rate of magnet steel 200, lifting motor efficiency.
In certain embodiments, as shown in figs 1 to 6, the outer end of each teeth portion 12 can be provided with the axial direction along the rotating shaft collar 11
Through the through hole 16 of teeth portion 12, on the one hand can mitigate the weight of rotor core 100, on the other hand, enter during beneficial to manufacture rotor
The follow-up plastic treatment of row.
Alternatively, as shown in figs 1 to 6, each teeth portion 12 can have multiple through holes 16, and multiple through holes 16 on teeth portion
12 center line is symmetrical.Thus, it is possible to further mitigate the weight of rotor core 100, and during plastic treatment, can
So that covered material forms non-magnetic part 300 in multiple through holes 16, leakage field rate is reduced, also, symmetrically arranged through hole 16 can
To improve the Mass Distribution uniformity of rotor core 100, it is possible to reduce because of the uneven noise for producing of Mass Distribution, be further beneficial to
Lifting motor performance.
Advantageously, connecting portion 13 and coupled teeth portion punching 120 can be formed with the integrated punching of annular punching 110.
Thus, it is possible to manufacturing procedure is reduced, while the rigging error between annular punching 110 and teeth portion punching 120 can also be reduced.
The invention also discloses a kind of rotor 1000, as shown in fig. 6, rotor 1000 according to embodiments of the present invention can be wrapped
Rotor core and multiple magnet steel 200 are included, wherein, rotor core is the rotor core 100 according to the above embodiment of the present invention, multiple
Magnet steel 200 can be located in multiple groove portions 130 correspondingly.
Rotor 1000 according to embodiments of the present invention, by setting rotor core according to the above embodiment of the present invention 100,
And magnet steel 200 is built in groove portion 130, the utilization rate of magnet steel 200 can be effectively improved, so that lifting motor efficiency.
Some examples of the invention, the same polarity of two adjacent magnet steel 200 is relative.
Some embodiments of the invention, at least one of magnet steel 200 and rotor core 100 can with plastic treatment,
To form non-magnetic part 300 in rotor 1000, such that it is able to connect laminate 101 and magnet steel 200 using non-magnetic part 300,
Improve the connection reliability of magnet steel 200 and rotor core 100.Also, can be formed in the space of rotor core 100 non-magnetic
Part 300, further to reduce leakage field, improves the utilization rate of magnet steel 200.Wherein, space for example can be through hole mentioned above
The positions such as the gap between 16 or magnet steel 200 and the rotating shaft collar 11.
As shown in fig. 7, plastic treatment is formed with non-magnetic end cap 400 respectively at the axial two ends of rotor 1000, each is non-to lead
Magnetic end cap 400 can be connected with non-magnetic part 300.That is, non-magnetic part 300 is located in rotor 1000, the He of rotor core 100
Magnet steel 200 is located between two non-magnetic end caps 400, and non-magnetic part 300 is connected with two non-magnetic end caps 400.By
This, non-magnetic part 300 and non-magnetic end cap 400 can plastic formation simultaneously, shaping easy to process is fast.
Alternatively, the covered material used by plastic treatment can be BMC (Bulk molding compounds, bulk molding
Material), PBT (polybutylene terephthalate, polybutylene terephthalate (PBT)) or epoxy resin.BMC, PBT and
Epoxy resin has preferably chemical stability, mechanical strength, electrical insulation characteristics and heat endurance, such that it is able to make rotor 1000
With preferably properties.
The manufacturing process of rotor 1000 according to embodiments of the present invention is described in detail with reference to Fig. 8.
As shown in figure 8, the manufacture method of rotor 1000 may comprise steps of：S1：Height is washed into type multiple laminate
101, wherein, each laminate 101 can include annular punching 110, the teeth portion being connected with annular punching 110 by connecting portion 13
Punching 120 and the teeth portion punching 120 being spaced apart with annular punching 110.
S2：The rotation of multiple laminates 101 is laminated to form rotor core 100.In lamination process, each can be folded
Laminate layer 101 rotation laminate, it is also possible to first part laminate 101 is not rotated directly laminate to be formed it is multigroup laminate group, then will be many
Group laminates a group rotation and laminates.Laminate to form rotor core 100 by rotation, the axiality of rotor core 100 can be improved and turned
The depth of parallelism of the both ends of the surface of sub- iron core 100, the thickness error produced during at the same time it can also laminate 101 being manufactured is in the rotating shaft collar
It is scatter in 11 circumference, it is to avoid error is continuously accumulated, such that it is able to improve assembly precision.
S3：Multiple magnet steel 200 are plugged in the corresponding groove portion 130 of rotor core 100, make magnet steel 200 built-in.
S4：Plastic treatment is carried out using non-magnet material, to form non-magnetic part 300 in rotor 1000, and in rotor
1000 two ends form the non-magnetic end cap 400 being connected with non-magnetic part 300 respectively, so that by magnet steel 200 and rotor core 100
It is folded between two non-magnetic end caps 400, rotor core 100 and magnet steel 200 is formed as one.
S5：It is overall to magnet steel 200 to magnetize, you can to complete the manufacture of rotor 1000.
Therefore, rotor 1000 according to embodiments of the present invention, convenient processing and manufacture, and laminate to form rotor by rotation
Iron core 100, can improve the axiality of rotor core 100 and the depth of parallelism of the both ends of the surface of rotor core 100, can also be by laminate
101 height are washed into the thickness error produced during type and are scatter in the circumference of the rotating shaft collar 11, prevent error from continuously accumulating, assembling essence
Degree is high.
Motor (not shown) according to embodiments of the present invention includes：Stator and according to the above embodiment of the present invention turn
Son 1000, can be provided with stator hole in stator, rotor 1000 is rotatably arranged in stator hole, converts electrical energy into mechanical energy.
Motor according to embodiments of the present invention, rotationally sets by by rotor according to the above embodiment of the present invention 1000
In stator hole, the utilization rate of magnet steel 200, lifting motor efficiency can be effectively improved.
Other of motor according to embodiments of the present invention are constituted and operated for the person of ordinary skill of the art
It is knowable, is not described in detail herein.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be that machinery connects
Connect, or electrically connect or can communicate each other；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be with
Be two element internals connection or two interaction relationships of element, unless otherwise clearly restriction.For this area
For those of ordinary skill, above-mentioned term concrete meaning in the present invention can be as the case may be understood.
In the description of this specification, reference term " embodiment ", " specific embodiment ", " example " or " specific example " etc.
Description mean the specific features described with reference to the embodiment or example, structure, material or feature be contained in it is of the invention extremely
In few one embodiment or example.In this manual, the schematic representation to above-mentioned term is necessarily directed to identical
Embodiment or example.And, the specific features of description, structure, material or feature can in any one or more embodiments or
Combined in an appropriate manner in example.Additionally, in the case of not conflicting, those skilled in the art can illustrate this
The feature of different embodiments or example and different embodiments or example described in book is combined and combines.
Claims (20)
1. a kind of rotor core, it is characterised in that including：
The rotating shaft collar, is provided with the axis hole for installing rotating shaft and is overrided to form by the punching of multiple annulars in the rotating shaft collar；
Multiple teeth portion, multiple teeth portion are located at the periphery of the rotating shaft collar and two adjacent teeth portion are along the rotating shaft
The circumferentially-spaced of the collar is opened to limit the groove portion for mounting magnetic steel, and each described teeth portion is by multiple teeth portion punchings along described turn
The axial direction of axle sleeve ring is overrided to form,
Wherein, distinguish in the multiple described teeth portion punching of each teeth portion and the multiple described teeth portion punching in same laminate
There is teeth portion punching described at least one to be spaced apart with the annular punching and respectively in radially inner of the rotating shaft collar
There is the described inner of teeth portion punching described at least one to be connected by connecting portion with the annular punching.
2. rotor core according to claim 1, it is characterised in that the quantity of the teeth portion is N number of, in same laminate
Interior, described the inner of the n teeth portion punching is connected by connecting portion with the outer peripheral face of the annular punching, wherein, N is even number
And n meets：0 ＜ n≤N/2.
3. rotor core according to claim 2, it is characterised in that at least one laminate, with the annular punching
The connected teeth portion punching of piece and the teeth portion punching that is spaced with the annular punching along the rotating shaft collar circumferential phase
Between set.
4. rotor core according to claim 3, it is characterised in that in each described laminate, with the annular punching
The connected teeth portion punching of piece and the teeth portion punching that is spaced with the annular punching along the rotating shaft collar circumferential phase
Between set, the connecting portion in the two neighboring laminate mutually laminates or staggers and set along the circumference of the rotating shaft collar
Put.
5. rotor core according to claim 1, it is characterised in that in multiple laminates, with the annular punching phase
The quantity of the teeth portion punching even is identical.
6. rotor core according to claim 1, it is characterised in that each described teeth portion punching is along the rotating shaft collar
Inner small and outside big sector is radially extended into, the connecting portion is formed as the connection sheet for radially extending along the rotating shaft collar,
In circumference along the rotating shaft collar, the inner extension chi of the extension size less than or equal to the teeth portion punching of the connection sheet
It is very little.
7. rotor core according to claim 1, it is characterised in that each described teeth portion punching is in the rotating shaft collar
Outer end radially on along the circumference of the rotating shaft collar be respectively arranged at two ends with substantially along the rotating shaft collar it is circumferential that
This location division away from extending and for positioning the magnet steel.
8. rotor core according to claim 7, it is characterised in that the location division phase in the two neighboring teeth portion punching
It is even or spaced apart.
9. rotor core according to claim 1, it is characterised in that the thickness L of each teeth portion punching meets：
0.2mm≤L≤1mm。
10. rotor core according to claim 1, it is characterised in that the outer peripheral face of the rotating shaft collar be provided with it is many
The individual groove portion one-to-one corresponding and the positioning convex portion for positioning the magnet steel.
11. rotor cores according to claim 10, it is characterised in that each described annular punching is provided with along its circumference
Spaced multiple positioning convex, the positioning convex in multiple annular punchings laminates direction phase along the annular punching
Company is formed as positioning convex strip, and the positioning convex strip constitutes the positioning convex portion.
12. rotor cores according to claim 1, it is characterised in that the outer end of each teeth portion is provided with along described turn
The through hole axially through the teeth portion of axle sleeve ring.
13. rotor cores according to claim 12, it is characterised in that each described teeth portion has multiple through holes,
The multiple center lines of the through hole on the teeth portion are symmetrical.
14. rotor core according to any one of claim 1-13, it is characterised in that the connecting portion and coupled
The teeth portion punching and the annular punching integrated punching formed.
A kind of 15. rotors, it is characterised in that including：
Rotor core according to any one of claim 1-14；
Multiple magnet steel, multiple magnet steel are corresponded and are located in multiple groove portions.
16. rotors according to claim 15, it is characterised in that at least one of the magnet steel and the rotor core
It is plastic to process to form non-magnetic part in the rotor.
17. rotors according to claim 16, it is characterised in that plastic treatment is formed respectively at the axial two ends of the rotor
There is non-magnetic end cap, each described non-magnetic end cap is connected with the non-magnetic part.
18. rotor according to claim 16 or 17, it is characterised in that covered material used by plastic treatment is BMC,
PBT or epoxy resin.
19. rotors according to claim 15, it is characterised in that the same polarity of the two neighboring magnet steel is relative.
A kind of 20. motors, it is characterised in that including：
Stator, stator hole is provided with the stator；
The rotor according to any one of claim 15-19, the rotor is rotatably arranged in the stator hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611226568.0A CN106712348A (en) | 2016-12-27 | 2016-12-27 | Rotor core, rotor and motor with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611226568.0A CN106712348A (en) | 2016-12-27 | 2016-12-27 | Rotor core, rotor and motor with same |
Publications (1)
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| CN106712348A true CN106712348A (en) | 2017-05-24 |
Family
ID=58895430
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611226568.0A Pending CN106712348A (en) | 2016-12-27 | 2016-12-27 | Rotor core, rotor and motor with same |
Country Status (1)
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| CN109067035A (en) * | 2018-07-27 | 2018-12-21 | 迈科国际控股（香港）有限公司 | Motor core, rotor and brushless motor |
| CN110971029A (en) * | 2018-09-28 | 2020-04-07 | 佛山市威灵洗涤电机制造有限公司 | Rotor punching sheet, rotor and motor |
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| CN110311491A (en) * | 2019-06-27 | 2019-10-08 | 北京理工大学 | A kind of efficient permanent magnet motor with low magnetism leakage flex rotor |
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