CN209627080U - The rotor of rotating electric machine and the rotating electric machine for having the rotor - Google Patents
The rotor of rotating electric machine and the rotating electric machine for having the rotor Download PDFInfo
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- CN209627080U CN209627080U CN201920301806.2U CN201920301806U CN209627080U CN 209627080 U CN209627080 U CN 209627080U CN 201920301806 U CN201920301806 U CN 201920301806U CN 209627080 U CN209627080 U CN 209627080U
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Abstract
The utility model provides a kind of rotor of rotating electric machine and has the rotating electric machine of the rotor, and the rotor of the rotating electric machine can reduce torque ripple and can revolve folded electromagnetic steel plate.In the rotor (10) of rotating electric machine, magnetic pole piece is included benchmark magnetic pole piece (140), and configuration is in the integer that around axis of rotation (O) and by the position of the rotor N equal part, the N is 2 or more；And n random arrangement magnetic pole piece (141), (142) ..., configure between benchmark magnetic pole piece (140), the n be 1 or more integer.Rotatably be arranged to counterclockwise from k-th of random arrangement magnetic pole piece that the side close to benchmark magnetic pole piece (140) is counted along the circumferential direction from benchmark magnetic pole piece (140): angle formed by d axis of the d axis with benchmark magnetic pole piece (140) in the random arrangement magnetic pole piece is that the position for deviateing predetermined angular is spent from 360k/N (n+1), the integer that the k is 1 to n.Moreover, magnet embedded hole (13) is disposed on the position being overlapped when spending rotor (10) around axis of rotation (O) rotation 360/N.
Description
Technical field
The utility model relates to the rotor of a kind of rotating electric machine (rotor) more particularly to a kind of inside edges in rotor core
The rotor of rotating electric machine of the circumferential direction configured with multiple permanent magnets and the rotating electric machine for having the rotor.
Background technique
Conventionally, there is known so-called built-in type permanent-magnet (Interior Permanent Magnet, IPM) motor, uses
It is configured with the rotor of multiple permanent magnets in the circumferential direction in the inside of rotor core (rotor core), as rotating electric machine
Rotor.There are following problems for such rotating electric machine: to realize high torque, high output, being then accompanied by this, becomes noise, vibration
The torque ripple (torque ripple) of dynamic reason will become larger.Therefore, as the mode for reducing torque ripple, such as it has been known that there is
Technology documented by patent document 1.
Disclose a kind of rotor of rotating electric machine in patent document 1, be embedded in the circumferential direction in rotor core it is more
The rotor of the rotating electric machine of a permanent magnet, and each permanent magnet be with from central axis respectively in a manner of not equiangularly spaced
And it configures.
[existing technical literature]
[patent document]
Patent document 1: Japanese Patent Laid-Open 2011-083047 bulletin
Utility model content
[utility model problem to be solved]
But in the rotor of the rotating electric machine of patent document 1, when from rotary axis direction, between the angle of each permanent magnet
Every whole differences, therefore in the case where being laminated by multiple electromagnetic steel plates and manufacturing rotor core, it is possible to can not revolve it is folded, and
The magnetically remaining directivity the problem of.
The utility model provides a kind of rotor of rotating electric machine that can reduce torque ripple and can revolve folded electromagnetic steel plate.
[technical means to solve problem]
The utility model is a kind of rotor of rotating electric machine comprising:
Rotor core comprising multiple electromagnetic steel plates through being laminated, and has multiple magnet embedded holes in the circumferential direction；And
Multiple magnetic pole pieces include the permanent magnet being inserted into the magnet embedded hole, wherein
The magnetic pole piece includes: benchmark magnetic pole piece, and configuration is around the axis of rotation and by the position of the rotor N equal part
It sets, the integer that the N is 2 or more；And n random arrangement magnetic pole piece, configure between the benchmark magnetic pole piece, the n be 1 with
On integer,
It is rotatably counted counterclockwise from the side close to the benchmark magnetic pole piece along the circumferential direction from the benchmark magnetic pole piece
K-th of random arrangement magnetic pole piece be arranged to: d axis in the random arrangement magnetic pole piece and the benchmark magnetic pole piece
D axis formed by angle be from 360k/N (n+1) spend deviate predetermined angular position, the k be 1 to n integer,
The magnet embedded hole, which is disposed on, rotates the position being overlapped when 360/N is spent around axis of rotation for the rotor.
The utility model is a kind of rotating electric machine, has rotor as described above, wherein
The rotor of the rotating electric machine has clutch in the internal side diameter of the rotor,
In the rotor core, being axially extended has the liquid path being connected to the clutch,
The liquid path is disposed between the magnetic pole piece configured in the circumferential direction with maximum interval.
The rotating electric machine of the utility model, in the rotor core, in the liquid path and near the liquid road
Hole portion is equipped between the magnetic pole piece of diameter.
The rotating electric machine of the utility model, in the hole portion, filled with the thermal resistivity material bigger than the electromagnetic steel plate.
[effect of utility model]
According to the utility model, from configuration around axis of rotation and by the position of rotor N equal part (integer that N is 2 or more)
The benchmark magnetic pole piece at place along the circumferential direction counterclockwise rotatably from close to benchmark magnetic pole piece side calculate k-th (k=1,
2 ..., n) random arrangement magnetic pole piece is arranged to: the d axis institute of d axis and benchmark magnetic pole piece in the random arrangement magnetic pole piece
At angle be that the position for deviateing predetermined angular is spent from 360k/N (n+1), therefore can reduce torque ripple.Moreover, magnet is embedded in
Hole, which is disposed on, rotates the position being overlapped when 360/N is spent around axis of rotation for rotor, therefore can revolve folded electromagnetic steel plate.
Detailed description of the invention
Fig. 1 is the front elevation of the rotating electric machine of the 1st embodiment of the utility model from axis direction.
Fig. 2 is the chart for indicating torque ripple caused by the rotating electric machine of Fig. 1.
Fig. 3 is the partial enlarged view of the rotating electric machine of the variation of Fig. 1.
Fig. 4 is the perspective view of Fig. 3.
Fig. 5 is the front elevation of the rotating electric machine from the 2nd embodiment of the utility model from axis direction.
The explanation of symbol
1: rotating electric machine
10,10A: rotor
11: rotor core
12: electromagnetic steel plate
13: magnet embedded hole
14: permanent magnet
140: benchmark magnetic pole piece
141,142,143,144,145: random arrangement magnetic pole piece
15: liquid path
16: hole portion
30: wet clutch mechanism (clutch)
Specific embodiment
Hereinafter, being illustrated based on the drawings each embodiment of the rotor of the rotating electric machine of the utility model.
[the 1st embodiment]
Firstly, illustrating the rotor of the rotating electric machine of the 1st embodiment of the utility model on one side on one side referring to figs. 1 to Fig. 4
10。
As shown in Figure 1, the rotating electric machine 1 of present embodiment includes: the rotor 10 of annulus shape, it is installed on armature spindle (not
Diagram) peripheral part；And the stator 20 of annulus shape, it is configured in opposite directions with the peripheral part of rotor 10.
Stator 20 includes: the stator core 21 of annulus shape, configures the peripheral part in rotor 10；And coil 22, it is inserted in
In the groove portion (being 36 in present embodiment) that the inner peripheral surface of stator core 21 is equally spaced along the circumferential direction.
Rotor 10 includes: rotor core 11, by by the circular such as silicon steel plate of electromagnetic steel plate 12 of substantially the same shape
Axially multiple stackings and formed, and be formed with multiple magnet embedded holes 13 in the circumferential direction；And permanent magnet 14, it is inserted into
In magnet embedded hole 13.
Magnet embedded hole 13 is two magnetic that will be configured in such a way that the outer peripheral surface towards rotor core 11 is in substantially V shape
Iron embedded hole 13 is used as one group, and 12 groups are formed in the circumferential direction of rotor core 11.In turn, magnet embedded hole 13 is with by rotor
10 modes that are overlapped when rotating 180 degree around axis of rotation O and configure.
Permanent magnet 14 is magnetized along diameter direction, and is configured to, and two one group of magnet embedded hole 13 above-mentioned is inserted in
The direction of magnetization of interior permanent magnet 14 be it is identical, and be configured to, the direction of magnetization and be inserted in the magnet embedded hole 13 of adjacent sets
Permanent magnet 14 it is different.As a result, in rotor 10,12 magnetic pole pieces are formed in the circumferential direction.
Magnetic pole piece includes: two benchmark magnetic pole pieces 140, configuration make rotor 10 around the position that axis of rotation O is halved
It sets；And five random arrangement magnetic pole pieces 141,142,143,144,145, between benchmark magnetic pole piece 140 counterclockwise rotatably
Configuration.
In the rotor of common rotating electric machine, magnetic pole piece be equally spaced configure, therefore the quantity of magnetic pole piece be 12
In the case where a, magnetic pole piece is configured with the intervals of 360 ÷ 12=30 degree.That is, random arrangement magnetic pole piece 141,142,143,
144,145 be generally arranged to: in counted from the side close to benchmark magnetic pole piece 140 k-th (k=1,2 ..., 5) it is random
Configure d axis, that is, d of magnetic pole piecek, d axis, that is, d with benchmark magnetic pole piece 140O, formed angle θkFor the position of 30 × k degree.
The random arrangement magnetic pole piece 141,142,143,144,145 of present embodiment is arranged to: being in θkFrom 30 × k degree
Deviate the position of predetermined angular.Specifically, d axis, that is, d of random arrangement magnetic pole piece 1411With dOFormed angle θ1It is inclined from 30 degree
From 27.5 degree of -2.5 degree.Moreover, d axis, that is, d of random arrangement magnetic pole piece 1422With dOFormed angle θ2To deviate -2.5 from 60 degree
57.5 degree of degree.Similarly, θ3For 87.5 degree for deviateing -2.5 degree from 90 degree, θ4To deviate+2.5 122.5 degree spent from 120 degree,
θ5For 152.5 degree for deviateing+2.5 degree from 150 degree.
The rotor 10 of the rotating electric machine 1 of present embodiment is as shown in Fig. 2, compared with θ as a result,k=30 × k degree, that is, 12 magnetic
The case where pole portion all equally spaced configures, can reduce generated torque ripple.In turn, magnet embedded hole 13 is configuration
At: it is overlapped when rotor 10 is rotated 180 degree around axis of rotation O, therefore folded electromagnetic steel plate 12 can be revolved.
Can also be as shown in Figures 3 and 4, in the internal side diameter of rotor 10, it is equipped with clutch such as wet clutch
(clutch) mechanism 30.
Wet clutch mechanism 30 includes: interior hub (inner hub) (not shown) is located at the periphery of armature spindle (not shown)
Face；Circular clutch disc (clutch plate) (not shown), is embedded in the outer peripheral surface of interior hub；Outer hub (the outer of clutch
Hub) 31, set on the inner peripheral surface of rotor 10；And circular friction plate (friction plate) (not shown), be embedded in from
The inner peripheral surface of the outer hub 31 of clutch, by the release or fastening of clutch disc and friction plate, to carry out the clutch of power.Clutch
Outer hub 31 is using the axis of rotation O of rotor 10 as the annular shape of axis of rotation, and inner peripheral surface has concaveconvex shape.Then, pass through
The concaveconvex shape, it is chimeric with the circular outer peripheral surface of friction plate (not shown).
Outside clutch in hub 31, equipped with the access 32 for running through inner peripheral surface and outer peripheral surface, and it is located in rotor core 11
Liquid path 15 is connected to.Liquid path 15 may be either the hole portion for axially running through rotor core 11, can also be such as Fig. 3 and Fig. 4 institute
Show the groove portion for being formed in 11 inner peripheral surface of rotor core like that.Liquid for being lubricated, cooling down to wet clutch mechanism 30 is such as
Shown in Fig. 4, from armature spindle by wet clutch mechanism 30, and rotor 10 is expelled to from access 32 by liquid path 15
Outside.Arrow in Fig. 4 is the arrow for indicating the flow direction of liquid.
From axis direction, liquid path 15 be provided at random arrangement magnetic pole piece 143 and random arrangement magnetic pole piece 144 it
Between.Herein, between random arrangement magnetic pole piece 143 and random arrangement magnetic pole piece 144, in 12 magnetic pole pieces of rotor 10, magnetic
Maximum is divided between circumferential direction between the portion of pole.Circumferential direction interval the best part between magnetic pole piece has substantially ensured what magnetic flux was passed through
Region, therefore it can will be suppressed to minimum because of the reduction of magnetic flux density caused by liquid path 15 are arranged in rotor core 11, and
The liquid for being used to be lubricated wet clutch mechanism 30, cool down can be expelled to the outside of rotor 10.In addition, the liquid
Body can reduce the liquid for by liquid path 15 set by the circumferential direction interval the best part between magnetic pole piece
Heat be transferred to permanent magnet 14.
In turn, as shown in Figures 3 and 4, random arrangement magnetic pole piece 143 and random arrangement magnetic pole piece 144 are apart from liquid road
The nearest magnetic pole piece of diameter 15, in rotor core 11, between liquid path 15 and random arrangement magnetic pole piece 143 and liquid path
Between 15 and random arrangement magnetic pole piece 144, be respectively equipped with hole portion 16, the hole portion 16 have from axis direction with apart from liquid
The substantially parallel elliptical shape of the nearest permanent magnet 14 in body path 15, and axially extend.Pass through the liquid of liquid path 15
Heat permanent magnet 14 is transferred to by hole portion 16, but since the thermal conductivity ratio electromagnetic steel plate 12 of the air in hole portion 16 is low, because
This heat that can further decrease the liquid is transferred to permanent magnet 14.
In hole portion 16, the thermal resistivity material bigger than electromagnetic steel plate 12, such as resin or foaming material etc. also can be filled with.In
In this case, since the thermal conductivity ratio electromagnetic steel plate 12 for the material being filled in hole portion 16 is low, also can reduce for pair
The heat for the liquid that wet clutch mechanism 30 is lubricated, cools down is transferred to permanent magnet 14.
[the 2nd embodiment]
Then, illustrate the rotor 10A of the rotating electric machine of the 2nd embodiment of the utility model on one side referring to Fig. 5 on one side.
In addition, for composition element identical with the rotor 10 of the 1st embodiment, marking identical symbol in the following description and saving
Omit or simplify explanation.
The rotor 10 of 1st embodiment be include: two benchmark magnetic pole pieces 140, configuration make rotor 10 around axis of rotation O
The position halved；And five random arrangement magnetic pole pieces 141,142,143,144,145, benchmark magnetic pole piece 140 it
Between rotatably configure counterclockwise, but the rotor 10A of the 2nd embodiment includes: three benchmark magnetic pole pieces 140, and configuration makes rotor
10A carries out the position of trisection around axis of rotation O；And three random arrangement magnetic pole pieces 141,142,143, in benchmark magnetic pole piece
It is rotatably configured counterclockwise between 140.Also, magnet embedded hole 13 is arranged to: by rotor 10 around axis of rotation O rotation 120
Overlapping when spending.
The random arrangement magnetic pole piece 141,142,143 of present embodiment is arranged to: being in θkIt is advised to deviate from 30 × k degree
Determine the position of angle.Specifically, d axis, that is, d of random arrangement magnetic pole piece 1411With dOFormed angle θ1To deviate -2.5 from 30 degree
27.5 degree of degree.Moreover, d axis, that is, d of random arrangement magnetic pole piece 1422With dOFormed angle θ2To deviate -2.5 degree from 60 degree
57.5 degree.Similarly, θ 3 is 92.5 degree for deviateing+2.5 degree from 90 degree.
In addition, in order to make explanation become simple and clear, in the 1st embodiment, using configuration make rotor 10 around rotation
In the 140, the 2nd embodiment of two benchmark magnetic pole pieces at the position that shaft heart O is halved, make rotor using configuration
Three benchmark magnetic pole pieces 140 of the 10A at the position that axis of rotation O carries out trisection, but it is not limited to bisection or trisection,
N number of benchmark magnetic pole piece 140 can also be configured in the position of N equal part (integer that N is 2 or more).
At this point, magnet embedded hole 13 is disposed on the position being overlapped when spending rotor around axis of rotation O rotation 360/N.
In addition, in the 1st embodiment, using five rotatably configured counterclockwise between benchmark magnetic pole piece 140 with
Machine configures magnetic pole piece 141,142,143,144,145, in the 2nd embodiment, uses the inverse time between benchmark magnetic pole piece 140
Three random arrangement magnetic pole pieces 141,142,143 that needle rotatably configures, but n (n 1 can also be configured between benchmark magnetic pole piece
Above integer) random arrangement magnetic pole piece.
At this point, counterclockwise rotatably from close to benchmark magnetic pole piece 140 side count k-th (k=1,2 ..., n) with
Machine configuration magnetic pole piece is arranged to: the d axis d in the random arrangement magnetic pole piecekWith the d axis d of benchmark magnetic pole piece 140OIt is formed
Angle θkTo spend the position for deviateing predetermined angular from 360k/N (n+1).
In addition, being set to θ in the 1st embodiment and the 2nd embodimentkFrom 360k/N (n+1) degree deviate+2.5 degree or-
2.5 degree of position, but any angle in addition to 0 degree can be deviateed, it can also be different.
Furthermore embodiment above-mentioned can be suitably deformed, improve.For example, real in the 1st embodiment and the 2nd
It applies in mode, two permanent magnets 14 is formed into a magnetic pole piece as one group, but one can also be formed by a permanent magnet 14
Three or more permanent magnets 14 can also be formed a magnetic pole piece as one group by magnetic pole piece.In addition, for example, for wet type
The liquid that clutch mechanism 30 is lubricated, cools down is from armature spindle by wet clutch mechanism 30, and logical from access 32
It crosses liquid path 15 and is expelled to the outside of rotor 10, but wet type clutch can also be imported from liquid path 15 by access 32
Device mechanism 30.
In addition, at least describing item below in this specification.Furthermore it is right in the embodiment to show in bracket
Composition element answered etc., but not limited to this.
(1) a kind of rotor (rotor 10) of rotating electric machine (rotating electric machine 1) comprising:
Rotor core (rotor core 11) comprising multiple electromagnetic steel plates (electromagnetic steel plate 12) through being laminated, and has in the circumferential direction
There is multiple magnet embedded holes (magnet embedded hole 13)；And
Multiple magnetic pole pieces, comprising the permanent magnet (permanent magnet 14) being inserted into the magnet embedded hole, wherein
The magnetic pole piece includes: benchmark magnetic pole piece (benchmark magnetic pole piece 140), and configuration is around axis of rotation and by the rotor
The position of N equal part (integer that N is 2 or more)；And n (integer that n is 1 or more) random arrangement magnetic pole piece (random arrangement magnetic
Pole portion 141,142,143,144,145), configure between the benchmark magnetic pole piece,
It is rotatably counted counterclockwise from the side close to the benchmark magnetic pole piece along the circumferential direction from the benchmark magnetic pole piece
K-th (k=1,2 ..., n) the random arrangement magnetic pole piece is arranged to: d axis in the random arrangement magnetic pole piece with
Angle formed by the d axis of the benchmark magnetic pole piece is that the position for deviateing predetermined angular is spent from 360k/N (n+1),
The magnet embedded hole, which is disposed on, rotates 360/N degree Shi Chong around axis of rotation (axis of rotation O) for the rotor
Folded position.
According to (1), from configuration around axis of rotation and by the benchmark at the position of rotor N equal part (integer that N is 2 or more)
Magnetic pole piece along the circumferential direction counterclockwise rotatably from close to benchmark magnetic pole piece side calculate k-th (k=1,2 ..., n) with
Machine configuration magnetic pole piece is arranged to: the d axis in the random arrangement magnetic pole piece and angle formed by the d axis of benchmark magnetic pole piece is certainly
360k/N (n+1) degree deviates the position of predetermined angular, therefore has not only been able to achieve the high torque of rotating electric machine, high output, but also can drop
Low torque pulsation.In addition, magnet embedded hole, which is disposed on, rotates the position being overlapped when 360/N is spent around axis of rotation for rotor, because
This can revolve folded electromagnetic steel plate, folded by carrying out rotation, generate heat with being able to suppress rotor local.
(2) a kind of rotating electric machine has rotor described in (1), wherein
The rotating electric machine has clutch (wet clutch mechanism 30) in the internal side diameter of the rotor,
In the rotor core, being axially extended has liquid path (the liquid road being connected to the clutch
Diameter 15),
The liquid path is disposed between the magnetic pole piece configured in the circumferential direction with maximum interval.
According to (2), in rotor core, between the magnetic pole piece configured in the circumferential direction with maximum interval, be equipped with by from
Close the liquid path of the liquid of mechanism, therefore the liquid that the decline of magnetic flux density can be inhibited and will be discharged from clutch
It is expelled to rotor exterior.In addition, the liquid path that the liquid will be set by the part place of the distance between magnetic pole piece, because
This heat that can reduce the liquid is transferred to magnetic pole piece.
(3) rotating electric machine according to (2), wherein
In the rotor core, it is equipped between the liquid path and the magnetic pole piece near the liquid path
Hole portion.
According to (3), in rotor core, liquid path and between the magnetic pole piece of the liquid path be equipped with hole
Portion, therefore the heat that can reduce the liquid being discharged from clutch is transferred to permanent magnet.
(4) rotating electric machine according to (3), wherein
In the hole portion, filled with the thermal resistivity material bigger than the electromagnetic steel plate.
According to (4), in hole portion, filled with the thermal resistivity material bigger than electromagnetic steel plate, therefore can reduce from clutch
The heat of the liquid of structure discharge is transferred to permanent magnet.
Claims (4)
1. a kind of rotor of rotating electric machine comprising:
Rotor core comprising multiple electromagnetic steel plates through being laminated, and has multiple magnet embedded holes in the circumferential direction；And
Multiple magnetic pole pieces, comprising the permanent magnet being inserted into the magnet embedded hole,
The rotor of the rotating electric machine is characterized in that,
The magnetic pole piece includes: benchmark magnetic pole piece, is configured around axis of rotation and by the position of the rotor N equal part, the N is
2 or more integer；And n random arrangement magnetic pole piece, it configures between the benchmark magnetic pole piece, the integer that the n is 1 or more,
The kth rotatably counted counterclockwise from the side close to the benchmark magnetic pole piece along the circumferential direction from the benchmark magnetic pole piece
A random arrangement magnetic pole piece is arranged to: the d axis of d axis and the benchmark magnetic pole piece in the random arrangement magnetic pole piece
Formed angle is that the position for deviateing predetermined angular is spent from 360k/N (n+1), the integer that the k is 1 to n,
The magnet embedded hole is disposed on the position being overlapped when spending the rotor around axis of rotation rotation 360/N.
2. a kind of rotating electric machine has rotor described in claim 1, the rotating electric machine is characterized in that,
The rotating electric machine has clutch in the internal side diameter of the rotor,
In the rotor core, being axially extended has the liquid path being connected to the clutch,
The liquid path is disposed between the magnetic pole piece configured in the circumferential direction with maximum interval.
3. rotating electric machine according to claim 2, which is characterized in that
In the rotor core, hole is equipped between the liquid path and the magnetic pole piece near the liquid path
Portion.
4. rotating electric machine according to claim 3, which is characterized in that
In the hole portion, filled with the thermal resistivity material bigger than the electromagnetic steel plate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-044758 | 2018-03-12 | ||
| JP2018044758A JP2019161827A (en) | 2018-03-12 | 2018-03-12 | Rotor for rotary electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209627080U true CN209627080U (en) | 2019-11-12 |
Family
ID=67995048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920301806.2U Active CN209627080U (en) | 2018-03-12 | 2019-03-11 | The rotor of rotating electric machine and the rotating electric machine for having the rotor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2019161827A (en) |
| CN (1) | CN209627080U (en) |
-
2018
- 2018-03-12 JP JP2018044758A patent/JP2019161827A/en active Pending
-
2019
- 2019-03-11 CN CN201920301806.2U patent/CN209627080U/en active Active
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| Publication number | Publication date |
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| JP2019161827A (en) | 2019-09-19 |
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