CN105048748A - Motor - Google Patents
Motor Download PDFInfo
- Publication number
- CN105048748A CN105048748A CN201510167256.6A CN201510167256A CN105048748A CN 105048748 A CN105048748 A CN 105048748A CN 201510167256 A CN201510167256 A CN 201510167256A CN 105048748 A CN105048748 A CN 105048748A
- Authority
- CN
- China
- Prior art keywords
- rotor
- salient pole
- motor
- permanent magnet
- stator
- 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.)
- Pending
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 48
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 42
- 230000011218 segmentation Effects 0.000 description 24
- 238000004088 simulation Methods 0.000 description 7
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model discloses a motor. The number of bulged poles of a stator is twelve, and the number of magnetic poles formed on the peripheral surface of a rotor is ten. The motor not only can form an effective magnetic circuit, but also can reduce the cogging torque. In the motor, the stator (3) disposed at the radial peripheral side of the rotor (2) comprises a stator core (13) which is provided with twelve bulged poles (13a) bulging radially inwards. The rotor (2) comprises a plurality of permanent magnets (8) which are arranged in the peripheral direction in an adjacent manner, and are arranged opposite to tail end faces (13e) of the bulged poles (13a), wherein there are gaps between the permanent magnets (8) and the tail end faces (13e) of the bulged poles (13a). The number of the magnetic poles on the peripheral surface of the rotor (2) is ten. The tail end faces (13e) of the bulged poles (13a) form a concave curved surface through smooth connection surfaces, and surfaces (8b), opposite to the tail end faces (13e) of the bulged poles (13a), of the permanent magnets (8), form a convex curved surface. In the motor, the ratio R1/R2 of the radius R1 of an imaginary circle contacting with a part of surfaces (8b) of the permanent magnets (8) to the curvature radius R2 of each of the surfaces (8b) of the permanent magnets (8) is from 0.4 to 0.55.
Description
Technical field
The present invention relates to and a kind ofly there is rotor and be configured at the motor of stator of radial outside of rotor.
Background technology
In the past, a kind of permanet magnet type motor (for example, referring to patent documentation 1) comprising the stator of the rotor with permanent magnet and the radial outside being configured at rotor was known to.In the motor that patent documentation 1 is recorded, stator has stator core and driving coil, and described stator core has towards nine outstanding salient pole of radially inner side, and described driving coil winding is in salient pole.Further, rotor has rotating shaft and is fixed on six permanent magnets of outer peripheral face of rotating shaft.Six permanent magnets are to be fixed on the outer peripheral face of rotating shaft in the mode circumferentially adjacent one another are of rotor, the quantity being formed at the magnetic pole of the outer peripheral face of rotor by six permanent magnets is sextupole.These six permanent magnets are opposed across space diametrically with the terminal surface of salient pole.
Further, in the motor that patent documentation 1 is recorded, be formed towards the auxiliary tank of radial outside depression at the terminal surface of salient pole.Specifically, auxiliary tank is formed with in the mode circumferentially angularly split by the terminal surface of the salient pole being formed as concave curved surface shape at the terminal surface of salient pole.In the motor that patent documentation 1 is recorded, cogging torque can be reduced by the effect being formed at the auxiliary tank of the terminal surface of salient pole.
Patent documentation 1: Japanese Unexamined Patent Publication 2007-189830 publication
As mentioned above, in the motor that patent documentation 1 is recorded, cogging torque can be reduced by the effect being formed at the auxiliary tank of the terminal surface of salient pole.But in this motor, because the terminal surface in salient pole is formed with auxiliary tank, the terminal surface of salient pole and the opposing area of permanent magnet decrease the amount being equivalent to auxiliary tank, be therefore difficult to the magnetic line of force is passed through effectively at the terminal surface of salient pole.That is, in this motor, be difficult to form effective magnetic circuit.
Summary of the invention
Therefore, problem of the present invention is to provide a kind of motor, and the quantity being wherein formed at the salient pole of stator is 12 and the quantity being formed at the magnetic pole of the outer peripheral face of rotor is ten poles, and described motor can not only form effective magnetic circuit and can reduce cogging torque.
In order to solve the problem, present inventor has carried out various research.Specifically, present inventor, in order to form effective magnetic circuit, on the basis of the concave curved surface shape being formed as being made up of level and smooth joint face by the terminal surface of salient pole, has carried out various research.Particularly present inventor is that the starting point has carried out various research with the pass between the curvature of the opposed faces of the permanent magnet opposed with the terminal surface of salient pole and the external diameter of rotor.Consequently, present inventor recognizes: be 12 and the quantity of the magnetic pole of the outer peripheral face of rotor is in the motor of ten poles in the quantity of salient pole, even if the terminal surface of salient pole is the concave curved surface shape be made up of level and smooth joint face, as long as the curvature of the opposed faces of permanent magnet and the external diameter of rotor meet the relation of specifying, just cogging torque can be reduced.
Based on above-mentioned new conclusion, motor of the present invention comprises: rotor, and stator, it is configured at the radial outside of rotor, and stator comprises: stator core, and it has towards the outstanding multiple salient pole of radially inner side, and driving coil, it is wound in salient pole, rotor comprises multiple permanent magnet, described multiple permanent magnet configures in the circumferentially adjacent mode at rotor, and it is opposed across space with the terminal surface of salient pole, the quantity of the salient pole that stator core has is 12, the quantity being formed at the magnetic pole of the outer peripheral face of rotor by multiple permanent magnet is ten poles, the terminal surface of salient pole is formed as the concave curved surface shape be made up of level and smooth joint face, the shape when opposed faces opposed with the terminal surface of salient pole of permanent magnet is formed as the end on observation from rotor is the convex surface shape of arc-shaped, if the imaginary radius of a circle that a part for the opposed faces from permanent magnets all during end on observation contacts is set to R1, the radius of curvature of the opposed faces from permanent magnet during end on observation is set to R2, then R2/R1 is 0.4 to 0.55.
In motor of the present invention, the terminal surface of salient pole is formed as the concave curved surface shape be made up of level and smooth joint face.Therefore, in the present invention, the terminal surface of salient pole and the opposing area of permanent magnet can be guaranteed, thus the magnetic line of force can be made effectively to pass through at the terminal surface of salient pole.Therefore, in the present invention, effective magnetic circuit can be formed.And, in the present invention, if the imaginary radius of a circle that a part for the opposed faces from permanent magnets all during end on observation contacts is set to R1, the radius of curvature of the opposed faces from permanent magnet during end on observation is set to R2, then R2/R1 is 0.4 to 0.55, therefore, be 12 and the quantity being formed at the magnetic pole of the outer peripheral face of rotor is in the motor of ten poles in the quantity of the salient pole being formed at stator, can cogging torque be reduced.
In the present invention, preferred R2/R1 is 0.43 to 0.45.If form by this way, then effectively can reduce the cogging torque of motor.Further, in this case, being more preferably R2/R1 is 0.443.If form by this way, then more effectively can reduce the cogging torque of motor.
Further, in this case, such as R1 is 40.65mm, R2 is 18mm.Further, in this case, be such as the arc-shaped contacted with concentric circles second imaginary circle of imaginary circle from the shape of the terminal surface of salient pole during end on observation, the second imaginary radius of a circle is 41.6mm.In the motor formed like this, more effectively can reduce the cogging torque of motor.
Further, in the present invention, the minimum clearance of preferred described terminal surface and described opposed faces is 0.95mm.In the motor formed like this, more effectively can reduce the cogging torque of motor.
Further, the center of curvature of the lateral surface of the radial direction of preferred peripheral part is consistent with the center of described stator, and described peripheral part forms the outer circumferential side part of described stator core, and the radius of curvature of described lateral surface is 61mm.In the motor formed like this, more effectively can reduce the cogging torque of motor.
And, preferred described rotor comprises rotating shaft and is fixed on the laminated iron core of outer peripheral face of described rotating shaft, described permanent magnet is fixed on the outer peripheral face of described laminated iron core, stationary plane is formed at described permanent magnet, described stationary plane is configured at radially inner side and is fixed on described laminated iron core, and the radius of curvature of described stationary plane is 37.45mm.In the motor formed like this, more effectively can reduce the cogging torque of motor.
Further, the center of curvature of preferred described opposed faces departs from 22.65mm from the center of described stator towards radial outside.In the motor formed like this, more effectively can reduce the cogging torque of motor.
As mentioned above, in the present invention, be 12 and the quantity being formed at the magnetic pole of the outer peripheral face of rotor is in the motor of ten poles in the quantity of the salient pole being formed at stator, effective magnetic circuit can not only be formed and can cogging torque be reduced.
Accompanying drawing explanation
Fig. 1 is the cutaway view of the motor involved by embodiments of the present invention.
Fig. 2 is the figure of rotor and the stator represented from the E-E direction Fig. 1.
Fig. 3 is the vertical view of the permanent magnet shown in Fig. 2 and segmentation iron core.
Fig. 4 is the chart of the analog result of the cogging torque representing motor.
Fig. 5 is the chart of the analog result of the cogging torque representing motor.
Fig. 6 is the chart of the analog result shown in Fig. 4, Fig. 5 being summed up.
(symbol description)
1 motor
2 rotors
3 stators
8 permanent magnets
8b opposed faces
13 stator cores
13a salient pole
13e terminal surface
14 driving coils
VC1 imaginary circle
VC2 second imaginary circle
Embodiment
Below, with reference to accompanying drawing, embodiments of the present invention are described.
(overall structure of motor)
Fig. 1 is the cutaway view of the motor 1 involved by embodiments of the present invention.Fig. 2 is the figure of the rotor 2 and stator 3 represented from the E-E direction Fig. 1.Fig. 3 is the vertical view of the permanent magnet 8 shown in Fig. 2 and segmentation iron core 15.
The motor 1 of the manner is inner-rotor type motor, and the external diameter of motor 1 is about 130mm.Further, the capacity of motor 1 is 850W to 2kW.As shown in Figure 1, this motor 1 comprises rotor 2, is configured at stator 3 and the motor shell 4 of the outer circumferential side (radial outside) of rotor 2.In addition, in the following description, by the radial direction of motor 1 (namely, the radial direction of rotor 2 and the radial direction of stator 3) as " radial direction ", by the circumferencial direction of motor 1 (namely, the circumferencial direction of rotor 2 and the circumferencial direction of stator 3) as " circumferencial direction ", using the axis (that is, the axis of rotor 2 and the axis of stator 3) of motor 1 as " axis ".
Rotor 2 comprises rotating shaft 6, be fixed on the laminated iron core 7 of the outer peripheral face of rotating shaft 6 and be fixed on multiple permanent magnets 8 of outer peripheral face of laminated iron core 7.The rotor 2 of the manner has ten permanent magnets 8.The bearing 9,10 that rotating shaft 6 is fixed in motor shell 4 supports as rotating.Laminated iron core 7 is formed by multiple magnetic sheets stacked.Further, laminated iron core 7 is formed as cylindric.This laminated iron core 7 is fixed on the outer peripheral face of rotating shaft 6 by such as shrink fit.
Permanent magnet 8 is such as the magnetic flux density such as neodium magnet is high and have the magnet of very strong magnetic force.Be formed with stationary plane 8a and opposed faces 8b at permanent magnet 8, described stationary plane 8a is configured at radially inner side and is fixed on laminated iron core 7, and described opposed faces 8b is configured at radial outside and opposed with the terminal surface 13e of aftermentioned salient pole 13a.Stationary plane 8a is formed as being the concave curved surface shape of arc-shaped from shape during end on observation, opposed faces 8b be formed as from shape during end on observation be the convex surface shape of arc-shaped.Further, as shown in Figure 3, during from end on observation, permanent magnet 8 is formed as the radius of curvature R 10 of the stationary plane 8a roughly crescent larger than the radius of curvature R 2 of opposed faces 8b.In the manner, in the mode that the magnetic pole of stationary plane 8a and the magnetic pole of opposed faces 8b are different magnetic poles, permanent magnet 8 is magnetized.
Permanent magnet 8 is with adjacent in a circumferential direction and be fixed on the outer peripheral face of laminated iron core 7 in a circumferential direction across the mode of the spacing of constant, and the quantity being formed at the magnetic pole of the outer peripheral face of rotor 2 by ten permanent magnets 8 is ten poles.Further, permanent magnet 8 is by being bonded and fixed to the outer peripheral face of laminated iron core 7.That is, the stationary plane 8a of permanent magnet 8 is by being bonded and fixed to the outer peripheral face of laminated iron core 7.As shown in Figure 3, at the outer peripheral face of laminated iron core 7, the projection 7a be configured between permanent magnet 8 adjacent is in a circumferential direction formed in the mode outstanding towards radial outside.In a circumferential direction, the end face of permanent magnet 8 contacts with projection 7a, and permanent magnet 8 is located in a circumferential direction by projection 7a.
In addition, permanent magnet 8 both can be made up of the multiple flat thin magnets split vertically, also can be made up of a flat thin magnet.Further, also projection 7a can not be formed at the outer peripheral face of laminated iron core 7.In this case, such as in the mode being formed with gap between permanent magnet 8 adjacent in a circumferential direction, ten permanent magnets 8 are fixed on the outer peripheral face of laminated iron core 7.Further, ten permanent magnets 8 are fixed on the outer peripheral face of laminated iron core 7 by the mode contacted with each other between permanent magnet 8 that also can be adjacent in a circumferential direction.In this case, the width circumferentially of permanent magnet 8 broadens a little.
Stator 3 comprises the stator core 13 with multiple salient pole 13a and the driving coil 14 being wound in multiple salient pole 13a respectively.As shown in Figure 2, stator core 13, except having multiple salient pole 13a, also has the peripheral part 13b of the outer circumferential side part forming stator core 13.Peripheral part 13b is formed as ring-type.Specifically, peripheral part 13b is formed as roughly cylindric, and multiple salient pole 13a is formed in the mode outstanding from peripheral part 13b towards radially inner side.Further, multiple salient pole 13a configures across the interval of constant in a circumferential direction.The stator core 13 of the manner has 12 salient pole 13a.
The main part 13c that salient pole 13a is connected with peripheral part 13b by cardinal extremity (radial outside end) and the terminal part 13d be connected with the end (radial inner end side) of main part 13c is formed.From width (width in the direction orthogonal with the projected direction of the salient pole 13a) constant of main part 13c during end on observation.During from end on observation, terminal part 13d is formed as the roughly arc-shaped expanded towards the both sides of circumferencial direction than main part 13c.Terminal surface (i.e. the terminal surface of the terminal part 13d) 13e of salient pole 13a is formed as being the concave curved surface shape of arc-shaped from shape during end on observation.Specifically, as shown in Figure 3, terminal surface 13e is formed as the concave curved surface shape that is made up of level and smooth joint face.Terminal surface 13e is opposed across space diametrically with the opposed faces 8b of permanent magnet 8.
Further, stator core 13 is by forming by multiple segmentation iron cores 15 of each salient pole 13a segmentation in a circumferential direction.That is, stator core 13 is made up of the multiple segmentation iron cores 15 be combined into one in a circumferential direction.The laminated iron core of segmentation iron core 15 for being formed by multiple magnetic sheets stacked.As shown in Figure 3, this segmentation iron core 15 comprises the segmentation peripheral part 15a of a part of salient pole 13a and formation peripheral part 13b.The surface of segmentation iron core 15 is all covered by insulating element 16 except a part.In the manner, form insulating element 16 by insert-molded on the surface of segmentation iron core 15.In addition, in fig. 2, the diagram of insulating part 16 is eliminated.
Segmentation peripheral part 15a be formed as from shape during end on observation be roughly arc-shaped.The width of the circumferencial direction of segmentation peripheral part 15a is wider than the width of the circumferencial direction of the main part 13c of salient pole 13a.Protuberance 15c is formed at the end face 15b of the side of the circumferencial direction of segmentation peripheral part 15a, described protuberance 15c is for carrying out the location in the side of circumferencial direction and adjacent segmentation iron core 15, be formed with recess 15e at the end face 15d of the opposite side of the circumferencial direction of segmentation peripheral part 15a, described recess 15e is for carrying out the location of opposite side at circumferencial direction and adjacent segmentation iron core 15.
Driving coil 14 is wound in the main part 13c of salient pole 13a across insulating element 16.Further, driving coil 14 is wound in each salient pole 13a.This driving coil 14 is wound in main part 13c with repeatedly turning back diametrically in the mode forming the wire overlap of driving coil 14.Further, the motor 1 of the manner is three-phase motor, and the driving being wound in each salient pole 13a is connected by Y connection with coil 14.
Multiple segmentation iron cores 15 that surface is covered by insulating element 16 after being wound with driving coil 14, with the state shrink fit along the circumferential direction combined in being formed as the inner circumferential side of roughly cylindric cartridge 21 and integration (reference Fig. 1).That is, multiple segmentation iron core 15 shrink fit is in being configured in the inner circumferential side of cartridge 21 of outer radial periphery side of segmentation iron core 15 and integrated.In addition, the cartridge 21 of the manner not only forms a part for stator 3, but also forms the side of motor shell 4.
(concrete structure of permanent magnet and stator core)
During from end on observation, the center of curvature of the stationary plane 8a of permanent magnet 8 is roughly consistent with the center C1 of stator 3.On the other hand, during from end on observation, as shown in Figure 3, the center of curvature C2 of the opposed faces 8b of permanent magnet 8 is from the center C1 of stator 3 towards radial outside deviation distance L.Further, during from end on observation, a part of the opposed faces 8b of ten permanent magnets 8 (namely all permanent magnets 8) contacts with imaginary circle VC1.Specifically, during from end on observation, the center of all opposed faces 8b contacts from inner circumferential side with imaginary circle VC1.The center of imaginary circle VC1 is roughly consistent with the center C1 of stator 3.
In the manner, from the radius R 1 (with reference to Fig. 3) of imaginary circle VC1 during end on observation and the ratio of the radius of curvature R 2 (with reference to Fig. 3) of the opposed faces 8b of the permanent magnet 8 during end on observation, namely R2/R1 is 0.4 to 0.55.Specifically, R2/R1 is 0.43 to 0.45.More particularly, in the manner, R1 is 40.65mm, R2 be 18mm, R2/R1 is 0.443.Further, in the manner, the radius of curvature R 10 (with reference to Fig. 3) of stationary plane 8a is 37.45mm.That is, the outer peripheral face radius of laminated iron core 7 is 37.45mm.Further, distance L is 22.65mm, and the width of the circumferencial direction of permanent magnet 8 is 21.2mm.
As shown in Figure 2, during from end on observation, form the circle centered by the center C1 of stator 3 by the terminal surface 13e of 12 salient pole 13a.That is, from the shape of terminal surface 13e during end on observation be the arc-shaped contacted with the concentric circles second imaginary circle VC2 of imaginary circle VC1 (with reference to Fig. 3).In the manner, the radius R 11 (with reference to Fig. 3) of the second imaginary circle VC2 is 41.6mm.That is, the terminal surface 13e of salient pole 13a and the opposed faces 8b minimum clearance G diametrically (with reference to Fig. 3) of permanent magnet 8 is 0.95mm in design.The center of curvature of the lateral surface (namely splitting the lateral surface of the radial direction of peripheral part 15a) of the radial direction of peripheral part 13b is consistent with the center C1 of stator 3.In the manner, the radius of curvature R 12 (with reference to Fig. 3) of the lateral surface of the radial direction of peripheral part 13b is 61mm.
(simulation of cogging torque)
Fig. 4, Fig. 5 are the chart of the analog result of the cogging torque representing motor 1.The chart of Fig. 6 for the analog result shown in Fig. 4, Fig. 5 is summed up.
Be in the motor 1 of 40.65mm at radius R 1, when radius of curvature R 2 is changed, carry out the simulation of cogging torque.Specifically, when radius of curvature R 2 is set as 14mm, 16mm, 18mm, 20mm, 22.5mm and 25mm, carry out the simulation of the cogging torque of motor 1.This analog result is below described.
In addition, in this simulation, except radius of curvature R 2, other conditions are constant.Further, in this simulation, radius of curvature R 10 is set as 37.45mm, radius R 11 is set as 41.6mm, radius of curvature R 12 is set as 61mm, 22.65mm will be set as apart from L, the width of the circumferencial direction of permanent magnet 8 is set as 21.2mm.Further, in this simulation, rotor 2 often rotates specified angle, just calculates the cogging torque of motor 1.
Fig. 4 represents the analog result of the cogging torque when radius of curvature R 2 is 14mm, 16mm, 18mm, the analog result of cogging torque when Fig. 5 represents that radius of curvature R 2 is 20mm, 22.5mm and 25mm.Further, according to analog result, the value of 1/2 of the maximum of the peak value of the cogging torque shown in Fig. 4, Fig. 5 and the difference of valley and the relation of R2/R1 are summarized, draws the chart shown in Fig. 6.
In addition, R2/R1 when radius of curvature R 2 is 14mm is 0.344, R2/R1 when radius of curvature R 2 is 16mm is 0.394, R2/R1 when radius of curvature R 2 is 18mm is 0.443 as mentioned above, R2/R1 when radius of curvature R 2 is 20mm is 0.492, R2/R1 when radius of curvature R 2 is 22.5mm is 0.554, and R2/R1 when radius of curvature R 2 is 25mm is 0.615.
As shown in Figure 6, according to the result of simulation: sharply decline from R2/R1 substantially beyond cogging torque 0.4.Further, roughly sharply decline lower than cogging torque 0.55 from R2/R1.That is, according to analog result, if R2/R1 is 0.4 to 0.55, then cogging torque can be reduced.Further, according to analog result, when radius of curvature R 2 be 18mm, R2/R1 is 0.443, cogging torque is minimum.
(main efficacy results of the manner)
As described above, in the manner, the terminal surface 13e of salient pole 13a is formed as the concave curved surface shape be made up of level and smooth joint face.Therefore, in the manner, the opposing area of terminal surface 13e and permanent magnet 8 can be guaranteed, and the magnetic line of force can be made effectively to pass through at terminal surface 13e.Therefore, in the manner, effective magnetic circuit can be formed.
In the manner, R2/R1 is 0.4 to 0.55.Therefore, in the manner, be 12 and the quantity being formed at the magnetic pole of the outer peripheral face of rotor 2 is in the motor 1 of ten poles in the quantity of salient pole 13a, as shown in above-mentioned analog result, the cogging torque of motor 1 can be reduced.Particularly in the present embodiment, because R2/R1 is 0.443, therefore, as shown in above-mentioned analog result, the cogging torque of motor 1 can effectively be reduced.
(other execution modes)
Above-mentioned execution mode is an example of the preferred mode of the present invention, but the present invention is not limited to this, can carry out various change in the scope not changing purport of the present invention.
In aforesaid way, stator core 13 is made up of the multiple segmentation iron cores 15 can split by each salient pole 13a.In addition, such as stator core 13 also can be made up of the multiple segmentation iron cores can split by every plural salient pole 13a.Further, stator core 13 also can be integrally formed.Further, in aforesaid way, form insulating element 16 by insert-molded on the surface of segmentation iron core 15, but the insulating element also formed by split embeds segmentation iron core 15, and utilize insulating element by the surface coverage of segmentation iron core 15.Further, in aforesaid way, although the stationary plane 8a of permanent magnet 8 is formed as concave curved surface shape, stationary plane 8a also can be formed as plane.
Claims (9)
1. a motor, comprising:
Rotor; And
Stator, it is configured at the radial outside of described rotor,
Described stator comprises:
Stator core, it has the multiple salient pole outstanding towards the inner side of described radial direction; And
Driving coil, it is wound in described salient pole,
Described rotor comprises multiple permanent magnet, and described multiple permanent magnet configures in the circumferentially adjacent mode at described rotor, and opposed across space with the terminal surface of described salient pole,
The quantity of the described salient pole that described stator core has is 12,
The quantity being formed at the magnetic pole of the outer peripheral face of described rotor by multiple described permanent magnet is ten poles,
The described terminal surface of described salient pole is formed as the concave curved surface shape be made up of level and smooth joint face,
The shape when opposed faces opposed with the described terminal surface of described salient pole of described permanent magnet is formed as the end on observation from described rotor is the convex surface shape of arc-shaped,
If the imaginary radius of a circle that a part for the described opposed faces from described permanent magnets all during described end on observation contacts is set to R1, the radius of curvature of the described opposed faces from permanent magnet described during described end on observation is set to R2, then R2/R1 is 0.4 to 0.55.
2. motor according to claim 1, is characterized in that,
R2/R1 is 0.43 to 0.45.
3. motor according to claim 2, is characterized in that,
R2/R1 is 0.443.
4. motor according to claim 3, is characterized in that,
R1 is 40.65mm, R2 is 18mm.
5. motor according to claim 4, is characterized in that,
Be the arc-shaped contacted with concentric circles second imaginary circle of described imaginary circle from the shape of the described terminal surface of described salient pole during described end on observation,
Described second imaginary radius of a circle is 41.6mm.
6. motor according to claim 5, is characterized in that,
The minimum clearance of described terminal surface and described opposed faces is 0.95mm.
7. motor according to claim 1, is characterized in that,
The center of curvature of the lateral surface of the radial direction of peripheral part is consistent with the center of described stator, and described peripheral part forms the outer circumferential side part of described stator core,
The radius of curvature of described lateral surface is 61mm.
8. motor according to claim 1, is characterized in that,
Described rotor comprises rotating shaft and is fixed on the laminated iron core of outer peripheral face of described rotating shaft,
Described permanent magnet is fixed on the outer peripheral face of described laminated iron core,
Be formed with stationary plane at described permanent magnet, described stationary plane is configured at radially inner side and is fixed on described laminated iron core,
The radius of curvature of described stationary plane is 37.45mm.
9. motor according to claim 1, is characterized in that,
The center of curvature of described opposed faces departs from 22.65mm from the center of described stator towards radial outside.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-084495 | 2014-04-16 | ||
| JP2014084495A JP2015204732A (en) | 2014-04-16 | 2014-04-16 | motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105048748A true CN105048748A (en) | 2015-11-11 |
Family
ID=53637433
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520213057.XU Active CN204481660U (en) | 2014-04-16 | 2015-04-09 | Motor |
| CN201510167256.6A Pending CN105048748A (en) | 2014-04-16 | 2015-04-09 | Motor |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520213057.XU Active CN204481660U (en) | 2014-04-16 | 2015-04-09 | Motor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2015204732A (en) |
| CN (2) | CN204481660U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106505764A (en) * | 2016-11-18 | 2017-03-15 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor structure, motor and compressor |
| CN109217600A (en) * | 2017-07-06 | 2019-01-15 | 三花亚威科电器设备（芜湖）有限公司 | For the oblique pole magnetic shoe of motor and with its rotor and motor |
| CN109478811A (en) * | 2016-07-12 | 2019-03-15 | Lg伊诺特有限公司 | Rotor and motor including the rotor |
| CN111149286A (en) * | 2017-10-06 | 2020-05-12 | 日本电产株式会社 | Motor and electric power steering apparatus |
| CN112671130A (en) * | 2019-10-15 | 2021-04-16 | 上海海立电器有限公司 | Permanent magnet synchronous motor and magnetic ring thereof |
| CN112913114A (en) * | 2018-10-26 | 2021-06-04 | 日本电产株式会社 | Surface magnet type motor and motor module |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015204732A (en) * | 2014-04-16 | 2015-11-16 | 日本電産サンキョー株式会社 | motor |
| KR102625434B1 (en) | 2016-12-13 | 2024-01-16 | 엘지이노텍 주식회사 | Rotor and Motor having the same |
| JP6918111B2 (en) * | 2017-01-04 | 2021-08-11 | エルジー イノテック カンパニー リミテッド | Motors and transmissions |
| KR102589674B1 (en) * | 2018-01-31 | 2023-10-16 | 엘지이노텍 주식회사 | Rotor and motor having the same |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001275285A (en) * | 2000-03-29 | 2001-10-05 | Asmo Co Ltd | Permanent magnet motor |
| JP2002084695A (en) * | 2000-06-30 | 2002-03-22 | Kusatsu Electric Co Ltd | Permanent magnet type motor |
| CN1489821A (en) * | 2001-01-30 | 2004-04-14 | ��Ĭ���� | Electric power steering system including permanent magnet motor |
| JP2004328818A (en) * | 2003-04-21 | 2004-11-18 | Toyoda Mach Works Ltd | Magnet type motor |
| JP2006060920A (en) * | 2004-08-20 | 2006-03-02 | Shin Etsu Chem Co Ltd | Permanent magnet motor |
| CN2884661Y (en) * | 2003-01-07 | 2007-03-28 | 美国艾默生电气公司 | Electric motor having controlled cogging |
| CN101145423A (en) * | 2006-08-30 | 2008-03-19 | 信越化学工业株式会社 | Permanent magnet and permanent magnet rotating machine |
| CN101783559A (en) * | 2009-01-15 | 2010-07-21 | 株式会社富士通将军股份有限公司 | Permanent magnet motor |
| CN204481660U (en) * | 2014-04-16 | 2015-07-15 | 日本电产三协株式会社 | Motor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005348522A (en) * | 2004-06-03 | 2005-12-15 | Hitachi Ltd | Motor for electric power steering and its manufacturing method |
| JP2006197786A (en) * | 2004-12-14 | 2006-07-27 | Asmo Co Ltd | Brushless motor |
| JP4616306B2 (en) * | 2007-06-14 | 2011-01-19 | 信越化学工業株式会社 | Permanent magnet motor |
-
2014
- 2014-04-16 JP JP2014084495A patent/JP2015204732A/en active Pending
-
2015
- 2015-04-09 CN CN201520213057.XU patent/CN204481660U/en active Active
- 2015-04-09 CN CN201510167256.6A patent/CN105048748A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001275285A (en) * | 2000-03-29 | 2001-10-05 | Asmo Co Ltd | Permanent magnet motor |
| JP2002084695A (en) * | 2000-06-30 | 2002-03-22 | Kusatsu Electric Co Ltd | Permanent magnet type motor |
| CN1489821A (en) * | 2001-01-30 | 2004-04-14 | ��Ĭ���� | Electric power steering system including permanent magnet motor |
| CN2884661Y (en) * | 2003-01-07 | 2007-03-28 | 美国艾默生电气公司 | Electric motor having controlled cogging |
| JP2004328818A (en) * | 2003-04-21 | 2004-11-18 | Toyoda Mach Works Ltd | Magnet type motor |
| JP2006060920A (en) * | 2004-08-20 | 2006-03-02 | Shin Etsu Chem Co Ltd | Permanent magnet motor |
| CN101145423A (en) * | 2006-08-30 | 2008-03-19 | 信越化学工业株式会社 | Permanent magnet and permanent magnet rotating machine |
| CN101783559A (en) * | 2009-01-15 | 2010-07-21 | 株式会社富士通将军股份有限公司 | Permanent magnet motor |
| CN204481660U (en) * | 2014-04-16 | 2015-07-15 | 日本电产三协株式会社 | Motor |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109478811A (en) * | 2016-07-12 | 2019-03-15 | Lg伊诺特有限公司 | Rotor and motor including the rotor |
| US11431214B2 (en) | 2016-07-12 | 2022-08-30 | Lg Innotek Co., Ltd. | Rotor and motor comprising same |
| CN106505764A (en) * | 2016-11-18 | 2017-03-15 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor structure, motor and compressor |
| CN106505764B (en) * | 2016-11-18 | 2023-07-14 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor structure, motor and compressor |
| CN109217600A (en) * | 2017-07-06 | 2019-01-15 | 三花亚威科电器设备（芜湖）有限公司 | For the oblique pole magnetic shoe of motor and with its rotor and motor |
| CN111149286A (en) * | 2017-10-06 | 2020-05-12 | 日本电产株式会社 | Motor and electric power steering apparatus |
| CN112913114A (en) * | 2018-10-26 | 2021-06-04 | 日本电产株式会社 | Surface magnet type motor and motor module |
| CN112913114B (en) * | 2018-10-26 | 2024-05-17 | 日本电产株式会社 | Surface magnet type motor and motor module |
| CN112671130A (en) * | 2019-10-15 | 2021-04-16 | 上海海立电器有限公司 | Permanent magnet synchronous motor and magnetic ring thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015204732A (en) | 2015-11-16 |
| CN204481660U (en) | 2015-07-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204481660U (en) | Motor | |
| JP5930253B2 (en) | Permanent magnet embedded rotary electric machine | |
| CN110808643B (en) | Stator core for rotating electrical machine and rotating electrical machine | |
| JP6343127B2 (en) | motor | |
| CN106953440A (en) | Electric rotating machine, the manufacture method of rotor core | |
| CN204481593U (en) | Motor | |
| CN102751832A (en) | Embedded permanent magnet electric motor | |
| US9490669B2 (en) | Rotor and motor | |
| JP2012120326A (en) | Interior magnet rotor, motor, and method for assembling motor | |
| CN104756368A (en) | Rotor and motor | |
| JP2010226937A (en) | Core member for rotating machine and rotating machine | |
| JP2015012675A (en) | Rotor and axial rotary electric machine employing rotor | |
| CN204481659U (en) | Motor | |
| JP2017229136A (en) | Rotor for axial gap motor, and axial gap motor | |
| JP5571480B2 (en) | Manufacturing method of motor | |
| JP5491298B2 (en) | Rotor, motor, and method of manufacturing rotor | |
| JP6001379B2 (en) | Rotor and motor | |
| JP2004222492A (en) | Rotary machines of three dimensional stator structure | |
| JP2013021774A (en) | Motor | |
| CN109980814A (en) | Built-in permanent magnet motor rotor and magneto | |
| JP2009213309A (en) | Stator of rotating electrical machine and the rotating electrical machine | |
| CN209526570U (en) | Brushless motor and air supply device | |
| JP2015065764A (en) | Magnet embedded type rotor | |
| CN208986802U (en) | EPS brushless motor | |
| JP6040104B2 (en) | Rotor and motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151111 |