CN208423969U - Rotating electric machine - Google Patents
Rotating electric machine Download PDFInfo
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- CN208423969U CN208423969U CN201690001244.4U CN201690001244U CN208423969U CN 208423969 U CN208423969 U CN 208423969U CN 201690001244 U CN201690001244 U CN 201690001244U CN 208423969 U CN208423969 U CN 208423969U
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- Prior art keywords
- bridge portion
- rotor core
- salient pole
- permanent magnet
- bridge
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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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model provides a kind of rotating electric machine, the rotating electric machine has stator core and rotor core, the rotor core is arranged in the mode opposed with stator core, there is the magnet opening of multiple permanent magnets with embedment, rotor core includes salient pole portion, radially than permanent magnet outside is prominent for it, and has the arc sections of the arc-shaped equal with the curvature of the most peripheral of rotor core circle；With bridge portion, the circumferential two sides in salient pole portion are set to, and there is radially outside interconnecting piece outstanding, interconnecting piece is set in the range by the most peripheral circle of the most peripheral point of rotor core.
Description
Technical field
The utility model relates to rotating electric machines.
Background technique
In the past, there is known have the rotating electric machine for being embedded to the rotor core for having permanent magnet.Such rotating electric machine is for example
It is disclosed in Japanese Unexamined Patent Publication 2014-54155 bulletin and International Publication No. 2014/027631.
The rotating electric machine for having magnet baried type motor is disclosed in Japanese Unexamined Patent Publication 2014-54155 bulletin, wherein on
It states motor and has the rotor core that embedment has permanent magnet.The rotating electric machine has: comprising with direction of rotation two sides have by
The rotor rim (rotor core) for multiple permanent magnets that the mode for the flux barrier that gap is formed is embedded to；In the diameter of rotor rim
Relative to rotor rim there is defined compartment of terrain to be configured to cricoid stator core outward；And make stator core excitation
Magnet exciting coil (spiral).Rotor rim includes to the radial outside salient pole portion outstanding of permanent magnet and in flux barrier
The bridge portion that radial outside will link between salient pole portion.In addition, in rotor rim, the maximum most peripheral point of distance away from rotation center
The curvature of the peripheral surface in neighbouring salient pole portion is configured to, than centered on the rotation center of rotor rim and passing through rotor rim
Most peripheral point most peripheral circle curvature it is big.
International Publication No. 2014/027631 identical as above-mentioned Japanese Unexamined Patent Publication 2014-54155 bulletin, discloses and has
The rotating electric machine of magnet baried type motor, wherein said motor has the rotor core that embedment has magnet (permanent magnet).At this
In rotating electric machine, rotor core includes being fixed on the iron-core workpiece of armature spindle and to set from the radially projecting mode of iron-core workpiece
6 magnetic pole pieces set.Magnetic pole piece is provided with the magnet mounting hole for magnet insertion, and the shape between adjacent magnetic pole piece
At the recess portion for having channel-shaped.The circumferential both ends of magnetic pole piece are provided with notch.In addition, with above-mentioned Japanese Unexamined Patent Publication 2014-54155 public affairs
Report it is identical, on rotor core, the song of the peripheral surface of the magnetic pole piece near the maximum most peripheral point of distance away from rotation center
Rate is configured to, than the curvature justified centered on the rotation center of rotor core and through the most peripheral of the most peripheral point of rotor core
Greatly.
Patent document 1: Japanese Unexamined Patent Publication 2014-54155 bulletin
Patent document 2: International Publication No. 2014/027631
However, remembering in above-mentioned Japanese Unexamined Patent Publication 2014-54155 bulletin and above-mentioned International Publication No. 2014/027631
In the rotating electric machine of load, on rotor rim (rotor core), the song of the peripheral surface in the salient pole portion (magnetic pole piece) of most peripheral point
Rate is bigger than the curvature of most peripheral circle.Here, the curvature of the peripheral surface in the salient pole portion (magnetic pole piece) of most peripheral point compares most peripheral
Round curvature is bigger, and the circumferential width of salient pole portion (part of the arc-shaped of magnetic pole piece) is with regard to smaller, it is therefore desirable to reduce permanent
The circumferential width of magnet makes permanent magnet be close to the rotation center side of rotor core.However, in the circumferential direction of permanent magnet
Width reduce in the case where, the surface area of the permanent magnet of side opposed with stator core becomes smaller, thus magnetic flux reduce.Separately
Outside, in the case where making permanent magnet be close to the rotation center side of rotor core, the distance between permanent magnet and stator core
Become larger, therefore magnetic flux reduces.In this way, there are problems that motor torsional moment reduces in the case where magnetic flux reduces.
Utility model content
The utility model be it is completed to solve the above problems, a purpose of the utility model is to provide and can press down
Make the reduced rotating electric machine of motor torsional moment caused by reducing because of magnetic flux.
To achieve the goals above, the rotating electric machine of a scheme of the utility model has: stator core；With rotor iron
Core is arranged in the mode opposed with stator core, and there is embedment to have the magnet opening of multiple permanent magnets, and rotor core includes
Salient pole portion, radially than permanent magnet outside is prominent, and has the circle equal with the curvature of the most peripheral of rotor core circle
The arc sections of arcuation；With bridge portion, the circumferential two sides in salient pole portion are set to, and there is radially outside protrusion outstanding,
Protrusion is set in the range by the most peripheral circle of the most peripheral point of rotor core.
In the rotating electric machine of a scheme of the utility model, so that the curvature and rotor core of the arc sections in salient pole portion
The equal mode of curvature of most peripheral circle constitute, to be greater than the curvature of most peripheral circle with the curvature of the arc sections in salient pole portion
Situation is compared, and the circumferential width not reducing permanent magnet can be by magnet opening and permanent magnet configuration in more by radial outside
Position.Thereby, it is possible to inhibit the reduction of the surface area of permanent magnet.As a result, being able to suppress because the reduction of magnetic flux is drawn
The reduction of the motor torsional moment risen.
In the rotating electric machine of said one scheme, preferably salient pole portion also has the end from the circumferential two sides of arc sections
The straight line portion that the end inside radially in portion to bridge portion obliquely extends, straight line portion are set to the most peripheral circle than rotor core
By the position of internal side diameter, the length between the both ends of the arc sections in salient pole portion is configured to than the straight line with the both ends for being set to salient pole portion
Length between the both ends in the bridge portion of portion's intersection is small.
According to this structure, by the way that the inclined straight line portion in inside radially is arranged, thus with will be from circular arc using circular arc
The case where end of the circumferential two sides in portion is connected to bridge portion is compared, between the outer peripheral surface and permanent magnet of rotor core
Distance becomes smaller, therefore becomes thinner near the part connecting with straight line portion in bridge portion.Thereby, it is possible to increase the magnetic resistance in bridge portion,
Therefore magnetic flux is able to suppress to leak from bridge portion.In addition, length between making the both ends of arc sections is than the bridge portion intersected with straight line portion
Length between both ends is small, thus compared to the length between the both ends of arc sections between the both ends in the bridge portion intersected with straight line portion
For situation more than length, the angle that straight line portion is connect with bridge portion becomes larger.As a result, being able to suppress due to rotor core
It rotates and acts on load concentration caused by the centrifugal force in salient pole portion in the interconnecting piece in bridge portion and straight line portion.Thereby, it is possible to mention
The durability of high rotor iron core.
In the rotating electric machine that above-mentioned straight line portion is arranged, preferably bridge portion includes the first bridge portion, one end and straight line portion
End connection；It with the second bridge portion, connect with the other end in the first bridge portion, and obliquely prolongs from the internal side diameter of the other end radially
Stretch, salient pole corresponding with one of adjacent permanent magnet portion side be arranged the second bridge portion and with it is adjacent forever
The second bridge portion connection of the other side setting in the corresponding salient pole portion of the other of long magnet, rotor core have will abut against the
The central side of the mutual interconnecting piece in two bridge portions and rotor core links and carries out to the short side for the permanent magnet that section is rectangle
The linking part of bearing.
According to this structure, become the structure that permanent magnet extends to linking part, therefore the circumferential width of permanent magnet
Become larger, as a result, being able to suppress the reduction of the surface area of the permanent magnet of side opposed with stator core, and can be into one
Walk the reduction of motor torsional moment caused by inhibiting the reduction because of magnetic flux.
In the rotating electric machine of the linking part with the short side for supporting above-mentioned permanent magnet, preferably linking part is configured to diameter
To central portion near circumferential width be greater than the circumferential width of other parts to support the short side of permanent magnet.
According to this structure, the short side of permanent magnet is contacted with linking part, therefore can be easy bearing permanent magnet.Separately
Outside, compared with the case where circumferential width of linking part is equally the circumferential width near radial central portion, linking part
Circumferential minimum widith becomes smaller, therefore is capable of increasing the magnetic resistance of linking part, lets out as a result, being able to suppress magnetic flux from linking part
Leakage.
In the rotating electric machine with above-mentioned first bridge portion, the second bridge portion and linking part, preferably the first bridge portion with
The direction extended with the second bridge portion in the smallest width in the orthogonal direction in direction that the first bridge portion extends or the second bridge portion is just
The direction that at least one of the smallest width in the direction of friendship is configured to and the direction of linking part extended with linking part is orthogonal
The smallest width it is equal.
According to this structure, disperse stress using at least one of the first bridge portion or the second bridge portion and linking part,
Therefore it can be improved the durability of rotor core.
Length between the both ends of the arc sections in above-mentioned salient pole portion is less than the rotating electric machine of the length between the both ends in bridge portion
In, the length between the both ends in the bridge portion preferably intersected with the straight line portion at the both ends for being set to salient pole portion is configured to be greater than salient pole
1 times of length between the both ends of the arc sections in portion and at its 3 times or less.
Here, the length between the both ends in bridge portion than it is 3 times of the length between the both ends of arc sections big in the case where, motor
The reduction amount of torque is bigger.Therefore, the length between the both ends by making bridge portion is greater than 1 of the length between the both ends of arc sections
Again and at its 3 times hereinafter, can be improved the durability of rotor core and effectively inhibit the reduction of motor torsional moment.
In the rotating electric machine with above-mentioned first bridge portion and the second bridge portion, preferably the first bridge portion and the second bridge portion are other
It is set to the position that internal side diameter is leaned on than the most peripheral circle of rotor core.
According to this structure, by the rotation of rotor core, the first bridge portion and the second bridge portion be not respectively dry with stator core
It relates to.It therefore, there is no need to expand the gap between stator core and rotor core, be able to suppress the reduction of magnetic flux density, therefore energy
Enough inhibit the reduction of motor output.
In the rotating electric machine with above-mentioned first bridge portion and the second bridge portion, preferably the second bridge portion being directly connected to that
The recess portion concave towards internal side diameter is provided between this.
According to this structure, the width for the part that the second bridge portion is connected to each other becomes smaller, therefore the magnetic resistance in the second bridge portion increases,
Magnetic flux is able to suppress to leak from the second bridge portion.
In the rotating electric machine for being provided with above-mentioned recess portion, the second bridge portion being preferably directly connected to shape that is in the shape of the letter V each other is matched
It sets.
It according to this structure, being capable of recess portion easy to form.
In the rotating electric machine of said one scheme, it is preferably configured as permanent magnetic baried in the state of magnet opening,
Magnet opening has space part near the end of the internal side diameter of permanent magnet.
According to this structure, the relief portion of permanent magnet is formed in magnet opening, therefore can be easy for be inserted into permanent magnet
Magnet opening.
Detailed description of the invention
Fig. 1 is the stator core and rotor core from the rotating electric machine of an embodiment of end on observation the utility model
Top view.
Fig. 2 is the top view from the rotor core of the rotating electric machine of an embodiment of end on observation the utility model.
Fig. 3 is the enlarged drawing of Fig. 2.
Specific embodiment
Hereinafter, illustrating the embodiments of the present invention in conjunction with attached drawing.
Referring to Fig.1~Fig. 3 illustrates the structure of the rotating electric machine 100 of present embodiment.
[overall structure of motor]
As shown in Figure 1, rotating electric machine 100 is, for example, the IPM motor that aftermentioned permanent magnet 31 is embedded to rotor core 30.Separately
Outside, rotating electric machine 100 has stator core 20 and rotor core 30.Rotor core 30 is set in the mode opposed with stator core 20
It is placed in the inside of circular stator core 20.In addition, referring to 30 (stator of rotor core in present specification with " circumferential direction "
Iron core 20) circumferential direction, " radial direction " refers to the radial mode of rotor core 30 to record.
As shown in Figure 1, on stator core 20 by from back yoke 21 to inner circumferential side it is outstanding in a manner of be provided with multiple (such as 9
It is a) tooth 22.Moreover, being respectively formed with slot 23 between adjacent tooth 22.Spiral is wound with (not on each tooth 22 (slot 23)
Diagram).
[structure of rotor core]
Here, in the present embodiment, as shown in FIG. 1 to 3, there is rotor core 30 embedment to have multiple (such as 6)
The magnet opening 31a of permanent magnet 31, section is that rectangle is (rectangular when above-mentioned permanent magnet 31 is from rotary axis direction (Z-direction)
Shape).In addition, 6 permanent magnets 31 are in circumferential equiangularly interval embedment.In addition, as shown in Figures 2 and 3, in rotor core 30
It is provided with the salient pole portion of arc sections 30a of the and outside diameter prominent to each radial outside of 6 permanent magnets 31 with arc-shaped
30b.In addition, rotor core 30 includes being set to the two sides of salient pole portion 30b in the circumferential and the outer of rotor core 30 being arranged in
Bridge portion 30c between diameter side and magnet opening 31a.Radially outside is prominent by bridge portion 30c.Specifically, from rotary axis direction,
Most peripheral circle is overlapped in the interconnecting piece C (referring to Fig. 3) of bridge portion 30c, aftermentioned first bridge portion 301c and the second bridge portion 302c
Part other than 300, interconnecting piece C is set to the position that internal side diameter is leaned on than most peripheral circle 300.In addition, the interconnecting piece C of bridge portion 30c
It is formed about the arc-shaped for being greater than most peripheral circle 300 for curvature.In addition, interconnecting piece C is claims " protrusion " or " first
One example of the other end in bridge portion ".
Moreover, in the present embodiment, from the rotary axis direction of rotor core 30, the arc sections 30a of salient pole portion 30b
The curvature of curvature and most peripheral circle 300 of outside diameter it is equal.That is, most peripheral circle 300 is overlapped with arc sections 30a.
From rotary axis direction, in the state of inserting permanent magnet 31, magnet opening 31a supports permanent magnet 31
Two long sides 310, and internal side diameter is supported near the respective central portion of two short sides 311 of permanent magnet 31.In addition, from rotation
Rotor shaft direction observation, magnet opening 31a are configured in the state of being inserted into permanent magnet 31, are formed from the two of permanent magnet 31
The respective central portion of short side 311 nearby covers outside diameter and in circumferential space part 31b outstanding.
In addition, in the present embodiment, in salient pole portion, 30b is provided with from the ends of the circumferential two sides of arc sections 30a i.e.
The straight line portion 30e that interconnecting piece A obliquely extends to the inside of the end of bridge portion 30c radially.Straight line portion 30e is from rotary axis direction
Linearly extend when observation, is set to the position for leaning on internal side diameter than most peripheral circle 300.In addition, in the circumferential direction of arc sections 30a
Length L1 (referring to Fig. 2) between the interconnecting piece A at the both ends of the arc sections 30a in the tangential direction of the heart be configured to than bridge portion 30c with
Length L2 (referring to Fig. 2) between the interconnecting piece B of straight line portion 30e is small.Specifically, to be configured to L2/L1 big by length L1 and length L2
In 1 and below 3.In addition, interconnecting piece A is an example of claims " ends of the circumferential two sides of arc sections ".
In addition, interconnecting piece B is the one of claims " both ends in the bridge portion intersected with straight line portion " or " one end in the first bridge portion "
A example.
In addition, in the present embodiment, as shown in Figures 2 and 3, bridge portion 30c has with straight line portion 30e's (referring to Fig. 3)
First bridge portion 301c of outboard end (interconnecting piece B) connection, connect with the outboard end (interconnecting piece C) of the first bridge portion 301c and from
Second obliquely extended when rotary axis direction is observed relative to the internal side diameter of the direction of the extension of the first bridge portion 301c radially
Bridge portion 302c.In addition, the second bridge portion being arranged in the side of salient pole portion 30b corresponding with one of adjacent permanent magnet 31
302c and the second bridge portion being arranged in the other side of salient pole portion 30b corresponding with the other of adjacent permanent magnet 31
302c is directly connected to.
As shown in figure 3, rotor core 30 has the second mutual interconnecting piece D of bridge portion 302c and rotor core 30 that will abut against
Internal side diameter link and support permanent magnet 31 short side 311 linking part 30f.Specifically, from rotary axis direction,
First bridge portion 301c extends near the end 310a of the long side 310 of the outside diameter of permanent magnet 31.It is seen from rotary axis direction
It examines, the second bridge portion 302c extends along the side 310b of the outside diameter of space part 31b.In addition, passing through interconnecting piece D and rotor core 30
The line segment α (referring to Fig. 2) of rotation center 30d (referring to Fig. 2) is from the linking part being arranged between adjacent magnet opening 31a
30f passes through.In addition, bridge portion 30c and linking part 30f are functioned respectively as flux barrier.
In addition, in the present embodiment, linking part 30f is configured to the circumferential width W1 near radial central portion and is greater than
The circumferential width of other parts is to support the short side 311 of permanent magnet 31.Specifically, linking part 30f is from outside diameter in
Centre portion width becomes larger, and gradually becomes smaller from central portion towards internal side diameter width.
In addition, in the present embodiment, it is orthogonal to be configured to the direction of the first bridge portion 301c extended with the first bridge portion 301c
The minimum widith W2 in direction, the orthogonal direction in the direction of the second bridge portion 302c extended with the second bridge portion 302c minimum widith
W3, the smallest width W1 in direction that the direction of linking part 30f extended with linking part 30f is orthogonal are equal.Specifically, from rotation
Rotor shaft direction observation, the first bridge portion 301c and the second bridge portion 302c similarly extend respectively, thus the first bridge portion 301c with the
The width in the orthogonal direction in the direction of the extension of one bridge portion 301c is equally all W2, the second bridge portion 302c with the second bridge portion 302c
The width in the orthogonal direction in direction of extension be equally all W3.In addition, space part 31b and neighbour in the side of magnet opening 31a
The immediate part space part 31b of the other side of the magnet opening 31a connect, the direction orthogonal with the direction that linking part 30f extends
Width be minimum value W1.
In addition, being provided with the recess portion 30g concave to internal side diameter between the second bridge portion 302c being directly connected to.Specifically
For, interconnecting piece C is located on most peripheral circle 300, and interconnecting piece D is located at the internal side diameter of most peripheral circle 300, therefore in the second bridge
Portion 302c forms recess portion 30g each other.
In addition, the second bridge portion 302c being directly connected to is configured to V-shape each other.Specifically, being seen from rotary axis direction
It examines, the second bridge portion 302c linearly extends and is configured to V-shape to form recess portion 30g.
In addition, magnet opening 31a is configured in the state that permanent magnet 31 is embedded in magnet opening 31a, in permanent magnet 31
The end 310c of internal side diameter nearby there is space part 31c.Specifically, the space part 31c of semicircle shape is provided with, from rotary shaft
Direction observation, space part 31c cover the end 310c of the long side 310 of the internal side diameter of permanent magnet 31 nearby and towards internal diameter pleurapophysis
Out.
[effect of present embodiment]
In the present embodiment, following such effect can be obtained.
In the present embodiment, so that the most peripheral of the curvature of the arc sections 30a of salient pole portion 30b and rotor core 30 circle
The equal mode of 300 curvature is constituted, to be greater than the curvature of most peripheral circle 300 with the curvature of the arc sections 30a of salient pole portion 30b
The case where compare, the circumferential width of permanent magnet 31 can not be reduced magnet opening 31a and permanent magnet 31 are configured at more
By the position of radial outside.Thereby, it is possible to inhibit the reduction of the surface area of permanent magnet 31.As a result, being able to suppress because of magnetic
The reduction of motor torsional moment caused by the reduction of flux.
In addition, in the present embodiment, by the way that the inclined straight line portion 30e in inside radially is arranged, thus with circle is utilized
Arc will be compared the case where connecting from the interconnecting piece A to bridge portion 30c of the circumferential two sides of arc sections 30a, rotor core 30
The distance between outer peripheral surface and permanent magnet 31 become smaller, therefore become near the part of bridge portion 30c connecting with straight line portion 30e
It is thinner.Thereby, it is possible to increase the magnetic resistance of bridge portion 30c, therefore it is able to suppress magnetic flux and is leaked from bridge portion 30c.In addition, making arc sections
Length L1 between the both ends (interconnecting piece A) of 30a is less than between the both ends (interconnecting piece B) of the bridge portion 30c intersected with straight line portion 30e
Length L2, thus compared to arc sections 30a both ends (interconnecting piece A) between length L1 the bridge portion 30c's intersected with straight line portion 30e
For the situation of length L2 or more between both ends (interconnecting piece B), straight line portion 30e becomes larger with the bridge portion 30c angle connecting.It is tied
Fruit is to be able to suppress the rotation as rotor core 30 and act on load concentration caused by the centrifugal force of salient pole portion 30b and exist
The interconnecting piece B of bridge portion 30c and straight line portion 30e.Thereby, it is possible to improve the durability of rotor core 30.
It is the structure that permanent magnet 31 extends to linking part 30f in addition, in the present embodiment, therefore permanent magnet 31
Circumferential width become larger, as a result, be able to suppress the reduction of the surface area of the permanent magnet 31 opposed with stator core 20,
And the reduction of motor torsional moment caused by the reduction because of magnetic flux can be further suppressed.
In addition, in the present embodiment, the short side 311 of permanent magnet 31 is contacted with linking part 30f, therefore can be easy to prop up
Hold permanent magnet 31.In addition, same as the circumferential width of linking part 30f is the circumferential width near radial central portion
The case where (such as W1), is compared, and the circumferential minimum widith of linking part 30f becomes smaller, therefore is capable of increasing the magnetic resistance of linking part 30f,
It is leaked as a result, being able to suppress magnetic flux from linking part 30f.
In addition, in the present embodiment, being utilized respectively the first bridge portion 301c, the second bridge portion 302c and linking part 30f makes
Stress dispersion, therefore can be improved the durability of rotor core 30.
In addition, in the present embodiment, two of length L2 than arc sections 30a between the both ends (interconnecting piece B) of bridge portion 30c
1 times of length L1 between end (interconnecting piece A) is greatly and at 3 times hereinafter, so as to improve the durability of rotor core 30 and have
Effect inhibits the reduction of motor torsional moment.
In addition, in the present embodiment, by the rotation of rotor core 30, the first bridge portion 301c and the second bridge portion 302c are each
From not with stator core 20 interfere.It therefore, there is no need to expand the gap between stator core 20 and rotor core 30, be able to suppress
The reduction of magnetic flux density, therefore it is able to suppress the reduction of the output of motor.
In addition, in the present embodiment, the width for the part that the second bridge portion 302c is connected to each other becomes smaller, therefore the second bridge portion
The magnetic resistance of 302c increases, and is able to suppress magnetic flux and leaks from the second bridge portion 302c.
In addition, in the present embodiment, the second bridge portion 302c being directly connected to is in the shape of the letter V shape configuration each other, so as to
Recess portion easy to form.
In addition, in the present embodiment, form the relief portion of permanent magnet 31 in magnet opening 31a, thus can be easy by
Permanent magnet 31 is inserted into magnet opening 31a.
[variation]
In addition, it will be understood that the full content of current disclosed embodiment is illustrated not for limitation.This is practical
Novel range is illustrated not by the explanation of above embodiment but by claims, and includes same with claims
Etc. whole changes (variation) in meaning and scope.
Such as in the above-described embodiment, the minimum of the width in the first bridge portion, the width in the second bridge portion, linking part is shown
The equal example of width, but the utility model is without being limited thereto.Such as in the present invention, can also with so that the first bridge portion width
One of degree or the width in the second bridge portion mode equal with the minimum widith of linking part are constituted.
In addition, in the above-described embodiment, showing the example of 6 permanent magnets of embedment, but the utility model is not limited to
This.In the present invention, (such as 8) permanent magnet is also configured to other than embedment 6.
In addition, in the above-described embodiment, example of the first bridge portion as the second respective width in bridge portion is shown, but
The utility model is without being limited thereto.In the utility model, the first bridge portion and the second respective width in bridge portion can also be different.
In addition, in the above-described embodiment, showing the example that space part 31c is semicircle shape, but the utility model is unlimited
In this.In the utility model, space part 31c may not be semicircle shape.
The explanation of appended drawing reference
20 ... stator cores；30 ... rotor cores；30a ... arc sections；30b ... salient pole portion；30c ... bridge portion；30d ... rotation
Center；The straight line portion 30e ...；30f linking part；30g ... recess portion；31 ... permanent magnets；31a ... magnet opening；31c ... space part；
100 ... rotating electric machines；300 ... most peripherals circle；The first bridge of 301c ... portion；The second bridge of 302c ... portion；311 ... short sides；A ... interconnecting piece
(ends of the circumferential two sides of arc sections)；B ... interconnecting piece (both ends in the bridge portion intersected with straight line portion) (one of the first bridge portion
End)；C ... interconnecting piece (protrusion) (other end in the first bridge portion)；D interconnecting piece；Length between L1 ... interconnecting piece A；L2…
Length between interconnecting piece B；The width (the smallest width) in the first bridge of W2 ... portion；The width in the second bridge of W3 ... portion is (minimum
Width)；The smallest width of W4 ... linking part.
Claims (4)
1. a kind of rotating electric machine, which is characterized in that have:
Stator core；With
Rotor core is arranged in the mode opposed with the stator core, and there is embedment to have the magnet opening of multiple permanent magnets,
The rotor core includes salient pole portion, and radially than the permanent magnet outside is prominent, and has and the rotor
The arc sections of the equal arc-shaped of the curvature of the most peripheral circle of iron core；With bridge portion, it is set to circumferential two in the salient pole portion
Side, and there is radially outside protrusion outstanding, the protrusion is set to the institute of the most peripheral point by the rotor core
In the range for stating most peripheral circle,
The salient pole portion also have the end from the end of the circumferential two sides of the arc sections to the bridge portion radially in
The straight line portion tiltedly extended is rolled,
The straight line portion is set to the position that internal side diameter is leaned on than the most peripheral circle of the rotor core,
Length between the both ends of the arc sections in the salient pole portion is configured to than the institute with the both ends for being set to the salient pole portion
The length stated between the both ends in the bridge portion of straight line portion intersection is small,
The bridge portion includes the first bridge portion, and one end is connect with the end of the straight line portion；With the second bridge portion, with described
The other end in one bridge portion connects, and obliquely extends from the internal side diameter of the other end radially,
The salient pole portion corresponding with one of the adjacent permanent magnet side be arranged second bridge portion and
Connect in second bridge portion that the other side in the salient pole portion corresponding with the other of the adjacent permanent magnet is arranged
It connects,
There is the rotor core central side of the mutual interconnecting piece in second bridge portion and the rotor core that will abut against to connect
The linking part tied and the short side for the permanent magnet that section is rectangle is supported.
2. rotating electric machine according to claim 1, which is characterized in that
The linking part is configured to the circumferential width near radial central portion and is greater than the circumferential width of other parts to prop up
Hold the short side of the permanent magnet.
3. rotating electric machine according to claim 1 or 2, which is characterized in that
The smallest width or described second in the direction orthogonal with the direction of first bridge portion extension in first bridge portion
Orthogonal at least one of the smallest width in direction in direction extended with second bridge portion in bridge portion is configured to and described
The smallest width in direction that the direction of linking part extended with the linking part is orthogonal is equal.
4. rotating electric machine according to claim 1 or 2, which is characterized in that
Length between the both ends in the bridge portion intersected with the straight line portion at the both ends for being set to the salient pole portion is configured to
Greater than 1 times of the length between the both ends of the arc sections in the salient pole portion and at its 3 times or less.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015218136A JP6601169B2 (en) | 2015-11-06 | 2015-11-06 | Rotating electric machine |
| JP2015-218136 | 2015-11-06 | ||
| PCT/JP2016/078094 WO2017077789A1 (en) | 2015-11-06 | 2016-09-23 | Rotating electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208423969U true CN208423969U (en) | 2019-01-22 |
Family
ID=58661908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201690001244.4U Active CN208423969U (en) | 2015-11-06 | 2016-09-23 | Rotating electric machine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6601169B2 (en) |
| CN (1) | CN208423969U (en) |
| WO (1) | WO2017077789A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114556749A (en) * | 2019-10-31 | 2022-05-27 | 富士通将军股份有限公司 | Rotor and motor |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6929379B2 (en) * | 2017-11-15 | 2021-09-01 | 三菱電機株式会社 | Permanent magnet type rotary electric machine |
| CN110912304B (en) * | 2019-10-25 | 2021-11-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor rotor, motor, compressor and air conditioner |
| JP2022116563A (en) * | 2021-01-29 | 2022-08-10 | 株式会社ミクニ | Permanent magnet embedded type motor and pump device |
| KR102606374B1 (en) * | 2021-09-01 | 2023-11-24 | 하이윈 마이크로시스템 코포레이션 | High frequency rotation structure |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009119015A1 (en) * | 2008-03-27 | 2009-10-01 | パナソニック株式会社 | Permanent magnet embedded type rotor, electric motor using the same, and electric equipment |
| JP5208662B2 (en) * | 2008-10-07 | 2013-06-12 | 株式会社日立産機システム | Permanent magnet type rotating electric machine and compressor using the same |
| JP5434415B2 (en) * | 2009-09-14 | 2014-03-05 | 株式会社豊田自動織機 | Permanent magnet embedded rotary electric machine |
| WO2014027631A1 (en) * | 2012-08-16 | 2014-02-20 | 株式会社ミツバ | Brushless motor and rotor for brushless motor |
-
2015
- 2015-11-06 JP JP2015218136A patent/JP6601169B2/en active Active
-
2016
- 2016-09-23 WO PCT/JP2016/078094 patent/WO2017077789A1/en active Application Filing
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114556749A (en) * | 2019-10-31 | 2022-05-27 | 富士通将军股份有限公司 | Rotor and motor |
| US12027918B2 (en) | 2019-10-31 | 2024-07-02 | Fujitsu General Limited | Rotor and electric motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017093082A (en) | 2017-05-25 |
| WO2017077789A1 (en) | 2017-05-11 |
| JP6601169B2 (en) | 2019-11-06 |
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