CN102904351B - Motor - Google Patents
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- CN102904351B CN102904351B CN201210260068.4A CN201210260068A CN102904351B CN 102904351 B CN102904351 B CN 102904351B CN 201210260068 A CN201210260068 A CN 201210260068A CN 102904351 B CN102904351 B CN 102904351B
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Abstract
A kind of motor, this motor (1) has the multiple permanent magnet blocks (4a) to arrange in the way of armature core (12) and magnetic flux guided rings (5), magnetic flux guided rings (5) is arranged between permanent magnet block (4a) and armature core (12), for magnetic flux is incorporated into armature core (12) from permanent magnet block (4a).Magnetic flux guided rings (5) has in the face of part (5a), the hole (Ak) being formed in part (5a) faced by each magnet block (4a) and connects adjacent two in the face of coupling part (5b) partly.Hole (Ak) is formed in the way of the border in the face of adjacent magnet block (4a).
Description
Technical field
It relates to a kind of motor, this motor is provided with the magnetic leader for magnetic flux is directed to armature core from permanent magnet being arranged between armature core and permanent magnet.
Background technology
For having the motor of armature core and permanent magnet, it is desirable to utilize simple structure to be efficiently used the magnetic flux from permanent magnet.In order to meet this requirement, JP-2008-35639A (US-2008/0024026A1) proposes a kind of motor between armature core and permanent magnet with soft magnetic material.The soft magnetic material being referred to as magnetic leader is arranged on the inner surface of permanent magnet.Therefore, the magnetic flux from permanent magnet flows through soft magnetic material, and is introduced in armature core.
In general, in motor, the axial length of permanent magnet is longer than the axial length of armature core.Therefore, may reduce more than the magnetic flux produced from other parts of permanent magnet from the magnetic flux being arranged in the part generation outside armature core of permanent magnet.Simultaneously, in motor disclosed in JP-2008-35639A (US-2008/0024026A1), owing to soft magnetic material is fixed on permanent magnet, even if so producing magnetic flux from the part outside armature core that is arranged in of permanent magnet, magnetic flux also can be appropriately introduced in armature core.Figure 50 is the diagram illustrating the magnetic flux flowing through soft magnetic material.
In order to make motor miniaturization, the number of poles of motor increases.That is, multiple permanent magnet is arranged in the way of N pole magnetic regions and S pole magnetic regions are alternately arranged along the direction of rotation of motor.As shown in figure 51, soft magnetic material (magnetic leader) arranges each magnetic regions, and thus magnetic flux is easily flowed in armature core by corresponding soft magnetic material.As a result, even if arranging multiple permanent magnet, the magnetic flux from permanent magnet is also effectively utilized.
But, arranging in the case of each permanent magnet at soft magnetic material (magnetic leader), the quantity of soft magnetic material increases.As a result, the quantity of the parts of motor increases, and the manufacturing step of motor also increases.
Summary of the invention
The one side of the disclosure provides a kind of motor, in this motor, effectively utilizes the magnetic flux produced from multiple permanent magnets, and improves the assembly properties of motor.
According to the disclosure, motor includes armature core, in the face of the permanent magnet of armature core and the magnetic leader for magnetic flux is incorporated into armature core from permanent magnet that is arranged between permanent magnet and armature core.Permanent magnet has the multiple magnetic fields arranged in the way of magnetic pole alternately changes along the direction of rotation of motor.Magnetic leader includes in the face of the direction of rotation in the face of part and along motor in each magnetic field connects adjacent two in the face of the coupling part of part.
Accompanying drawing explanation
By the detailed description carried out with reference to the accompanying drawings, above and other aspect, feature and the advantage of the disclosure will become apparent.In the accompanying drawings:
Fig. 1 is the axonometric chart of the motor according to first embodiment；
Fig. 2 is the top view of yoke；
Fig. 3 is the axonometric chart of the yoke eliminating armature；
Fig. 4 is the sectional view of the IV-IV line intercepting along Fig. 1；
Fig. 5 is the expansion view illustrating magnetic flux guided rings；
Fig. 6 is the axonometric chart of the yoke according to the second embodiment；
Fig. 7 is the expansion view illustrating the magnetic flux leader according to the second embodiment；
Fig. 8 is the axonometric chart of the yoke according to the 3rd embodiment；
Fig. 9 is the expansion view illustrating the magnetic flux leader according to the 3rd embodiment；
Figure 10 is the axonometric chart of the yoke according to the 4th embodiment；
Figure 11 is the expansion view illustrating the magnetic flux leader according to the 4th embodiment；
Figure 12 is the axonometric chart of the yoke according to the 5th embodiment；
Figure 13 is the expansion view illustrating the magnetic flux leader according to the 5th embodiment；
Figure 14 is the diagram of the advantage for explaining the 5th embodiment；
Figure 15 is the axonometric chart of the yoke according to sixth embodiment；
Figure 16 is the expansion view illustrating the magnetic flux leader according to sixth embodiment；
Figure 17 is the axonometric chart of the yoke of the modification according to sixth embodiment；
Figure 18 is the expansion view illustrating the magnetic flux leader according to the modification that figure 17 illustrates；
Figure 19 is the axonometric chart of the yoke according to the 7th embodiment；
Figure 20 is the top view of magnet ring；
Figure 21 is the axonometric chart of magnet ring；
Figure 22 is the axonometric chart of the motor according to the 8th embodiment；
Figure 23 is the top view of yoke；
Figure 24 is the axonometric chart of the rotor according to the 8th embodiment；
Figure 25 is the sectional view of the XXV-XXV line intercepting along Figure 22；
Figure 26 A is the expansion view illustrating the magnetic flux leader according to the 8th embodiment；
Figure 26 B is the expansion view of the magnetic flux leader illustrating the modification according to the 8th embodiment；
Figure 27 is the axonometric chart of the rotor according to the 9th embodiment；
Figure 28 is the expansion view illustrating the magnetic flux leader according to the 9th embodiment；
Figure 29 is the axonometric chart of the rotor according to the tenth embodiment；
Figure 30 is the expansion view illustrating the magnetic flux leader according to the tenth embodiment；
Figure 31 is the axonometric chart of the rotor according to the 11st embodiment；
Figure 32 is the expansion view illustrating the magnetic flux leader according to the 11st embodiment；
Figure 33 is the axonometric chart of the rotor according to the 12nd embodiment；
Figure 34 is the expansion view illustrating the magnetic flux leader according to the 12nd embodiment；
Figure 35 is the diagram of the advantage for explaining the 12nd embodiment；
Figure 36 is the axonometric chart of the rotor according to the 13rd embodiment；
Figure 37 is the expansion view illustrating the magnetic flux leader according to the 13rd embodiment；
Figure 38 is the axonometric chart of the rotor of the modification according to the 13rd embodiment；
Figure 39 is the expansion view illustrating the magnetic flux leader according to the modification that figure 38 illustrates；
Figure 40 is the axonometric chart of the rotor according to the 14th embodiment；
Figure 41 is the axonometric chart of the rotor according to the 15th embodiment；
Figure 42 and Figure 43 shows the first method for fixing magnetic flux guided rings；
Figure 44 is the zoomed-in view in " M " region in Figure 42；
Figure 45 is the zoomed-in view in " N " region in Figure 42；
Figure 46 shows the second method for fixing magnetic flux guided rings 105；
Figure 47,48 and 49 show the third method for fixing magnetic flux guided rings 105；
Figure 50 is the diagram illustrating the magnetic flux flowing through soft magnetic material according to conventional art；
Figure 51 is the axonometric chart of the yoke according to conventional art.
Detailed description of the invention
To 5, first embodiment is described below with reference to Fig. 1.Fig. 1 is the axonometric chart of the motor according to first embodiment.Fig. 2 is the top view of yoke.Fig. 3 is the axonometric chart of the yoke eliminating armature core.Fig. 4 is the sectional view of the IV-IV line intercepting along Fig. 1.Fig. 5 is the expansion view illustrating magnetic flux guided rings.It should be noted that Fig. 1 illustrate only the inside of yoke.
Motor 1 is the direct current generator with multipole multiple-grooved structure.This motor 1 is with acting on the micromachine automatically opening up the window with closing automobile.Motor 1 has the well-known structure in addition to magnetic flux guided rings (magnetic leader) 5.
That is, motor 1 has the cylindrical yoke 2 of receiving armature (rotor) 3 and stator 4.
Armature 3 is arranged radially at middle body along yoke 2.As illustrated in fig. 1 and 2, armature 3 has axle 11 and armature core 12.Axle 11 is made up of metal material, and is used as the output shaft of motor 1.Therefore, the direction of rotation of axle 11 is corresponding to the direction of rotation of motor 1.Armature core 12 has the multiple tooth T1-T8 and multiple groove R1-R8 extended radially outwardly.In the present embodiment, armature core has 8 tooth T1-T8 and 8 groove R1-R8.The quantity of tooth and groove can arbitrarily be set up.
Coil (not shown) is wound around around each tooth T1-T8.When providing energy to this coil, armature core 12 and axle 11 rotate.Brush and diverter is used to provide energy by well-known method to coil.
Stator 4 is the permanent magnet in yoke 2 around the armature 3 including armature core 12.In the present embodiment, stator 4 is made up of multiple magnet block 4a, and each magnet block 4a is respectively provided with N pole and S pole.These magnet block are arranged on the inwall of yoke 2.Therefore, stator 4 produces multiple magnetic field, and the plurality of field pole alternately changes along the direction of rotation of armature 3.Magnetic field produces magnetic flux towards armature core 12.
Magnet block 4a with N pole and magnet block 4a with S pole are arranged alternately to annular shape along the direction of rotation of armature 3.Specific gap is produced between adjacent magnet block 4a.When arranging magnet block 4a, magnet block 4a may be disposed to elliptical shape or rectangular shape.
In the present embodiment, 6 magnet block 4a are arranged along the direction of rotation of armature 3 with 60 ° of intervals.That is, magnet block 4a is arranged so that magnetic pole changes at regular intervals along the direction of rotation of armature 3.
Additionally, according to the present embodiment, magnet block 4a is longer along the axial length of axle 11 than armature core 12 along the axial length of axle 11.I.e., as shown in Figure 4, axial along axle 11, the middle body of magnet block 4a is in the face of armature core 12 (specifically, each tooth T1-T8).The two ends of magnet block 4a are axially arranged in the outside of armature core 12.By the way of the axially stacked length with armature core 12 is unlike the axial length length of magnet block 4a, stacking multiple iron core bar forms armature core 12, thus effectively obtains magnetic flux.
As shown in Figure 4, magnet block 4a is arranged in length L1 outside armature core 12 and is substantially equal to magnet block 4a and is arranged in length L2 outside armature core 12 along another direction along direction.
It should be noted that the axial length of magnet block 4a can be short equal to the axial length of the axial length of armature core 12 or comparable armature core 12.
Magnetic flux guided rings (magnetic leader) 5 is arranged in yoke 2.This magnetic flux guided rings 5 is corresponding to magnetic flux leader, and is arranged between magnet block 4a and armature core 12.That is, magnetic flux guided rings 5 is used as auxiliary iron core, so that magnetic flux is efficiently introduced into armature core 12 from each magnet block 4a.Magnetic flux guided rings 5 is made up of soft magnetic material by the compression molding of soft magnetic material powder.
More specifically, magnetic flux guided rings 5 is fixed on the inner surface of magnet block 4a, thus protects each magnet block 4a, from the uniform magnetic flux of each magnet block, and can improve anti-demagnetizing.In addition, magnetic flux guided rings 5 utilizes binding agent or other fixing component such as bolt and nuts to be fixed in magnet block 4a.
Although as it has been described above, the two ends of magnet block 4a are arranged in the outside of armature core 12, but magnetic flux is incorporated into armature core 12 by magnetic flux guided rings 5 from the two ends of magnet block 4a.
It should be noted that magnetic flux guided rings 5 is the annular construction member being only made up of parts.I.e., in the present embodiment, owing to only arranging a magnetic flux guided rings 5 not having end, so the quantity of parts can reduce, rather than magnetic flux leader arranges the situation of each magnet block 4a.As a result, magnetic flux guided rings 5 can easily be attached to motor 1.
More specifically, magnetic flux guided rings 5 have circumferentially be alternately arranged in the face of part 5a and coupling part 5b.In the face of part 5a is in the face of each magnet block 4a.That is, it is fixed on the inner surface of each magnet block 4a in the face of part 5a.From the magnetic flux of each magnet block 4a by being appropriately introduced in armature core 12 in the face of part 5a.
In the present embodiment, the axial length of magnetic flux guided rings 5 is equal to the axial length of magnet block 4a.Specifically, in the face of part 5a, there is the shape almost identical with magnet block 4a.The whole inner surface of magnet block 4a is coated with in the face of part 5a.Therefore, the magnetic flux from each magnet block 4a can more be appropriately introduced in armature core 12.The magnetic flux produced from the two ends of magnet block 4a and the magnetic flux produced from the middle body of magnet block 4a are incorporated into armature core 12.
Additionally, magnetic flux guided rings 5 has rectangular opening " Ak " adjacent between part 5a.Rectangular opening " Ak " is corresponding to the adjacent gap between part 5a.When magnetic flux guided rings 5 is arranged on ad-hoc location, above-mentioned rectangular opening " Ak " is arranged between adjacent magnet block 4a.
Coupling part 5b connects adjacent in the face of part 5a.Part 5a faced by multiple is connected by coupling part 5b, to become annular shape.As Fig. 3 is to shown in 5, and coupling part 5b is made up of the first pontes 5c and the second coupling part 5d.
Specifically, the first pontes 5c connects adjacent in the face of the axial first end of part 5a.Second coupling part 5d connects adjacent in the face of the axial the second end of part 5a.It is connected to each other by two coupling parts 5c, 5d, so magnetic flux guided rings 5 can be avoided to distort in the face of part 5a due to adjacent.
Additionally, the width of the first pontes 5c is substantially equal to the width of the second coupling part 5d.The width of first and second coupling part 5c, 5d is defined to guarantee for the joint face mechanical strength to part 5a.In other words, as long as guaranteeing that then the first and second coupling part 5c, the width of 5d can be narrower for the joint face mechanical strength to part 5a.Therefore, can reduce from the face of part 5a is to the leakage of the magnetic flux of coupling part 5b.
More specifically, the axial length of the magnetic flux guided rings 5 indicated by " G " in the diagram is equal to the axial length of magnet block 4a indicated by " X " in the diagram.Width d1, d2 of first and second coupling part 5c, 5d is less than the half of length " X " with the difference of the axial length " Y " of armature core 12.That is, the width d2 of the width d1 and the second coupling part 5d of the first pontes 5c meets equation below:
d1≤(X-Y)/2…(1)
d2≤(X-Y)/2…(2)
Preferably, width d1, d2 of first and second coupling part 5c, 5d are the narrowest, to prevent magnetic flux bleed-through.
Additionally, rectangular opening " Ak " is formed in the way of meeting aforesaid equation (1) and (2).Rectangular opening " Ak " is formed between the first pontes 5c and the second coupling part 5d.
The axial width " a " of rectangular opening " Ak " is in fig. 5 it is shown that meet equation below (3):
G=X=a+d1+d2 ... (3)
Moreover it is preferred that the axial width " a " of hole " Ak " is more than the length " Y " of armature core 12.
a≥Y…(4)
Magnetic flux guided rings 5 is formed by punching press annular material, to meet aforesaid equation.Magnetic flux guided rings 5 is arranged between magnet block 4a and armature core 12.
Therefore, magnetic flux can be appropriately introduced into armature core 12 from each magnet block 4a, and each magnet block 4a is individually equipped with the situation of magnetic flux leader.Additionally, the quantity of parts can reduce.Magnetic flux guided rings 5 can be easily fitted into motor 1.Manufacturing cost also can reduce.
As it has been described above, magnetic flux guided rings 5 is formed by single part.Even if the quantity of permanent magnet 4a increases, even if or the size reduction of magnet block 4a, magnetic flux guided rings 5 is also readily adhered to motor 1.Therefore, magnetic flux guided rings 5 is conducive to making motor 1 miniaturization and reducing its weight.
In second and subsequent embodiment, use identical label to indicate the parts identical with parts in the first embodiment and assembly and assembly, and identical description will not repeated.
[the second embodiment]
In a second embodiment, hole " Ak " be shaped differently than first embodiment.The shape of hole " Ak " will be described with reference to Fig. 6 and 7.Fig. 6 is the axonometric chart of the yoke according to the second embodiment.Fig. 7 is the expansion view illustrating the magnetic flux leader according to the second embodiment.
" Ak " is configured to hexagon in hole.As it is shown in fig. 7, the shape of hole " Ak " is by reducing, along the direction of rotation of armature 3, the hexagon that regular hexagon obtains.The first most advanced and sophisticated and the second tip diagonal that connection is arranged in two ends along direction of rotation is orthogonal with the centrage of axle 11.
The axial length in hole " Ak " becomes longer from the middle body of the first and second tips to hole " Ak ".In other words, the open area of hole " Ak " gradually changes from two tips towards its central authorities.
Changed also along the direction of rotation of armature 3 by the magnetic flux of magnetic flux guided rings 5, be derived from oblique (skew) function.Oblique function can limit magnetic variation together with the rotation of armature core, thus can limit vibration (cogging effect) and noise.
As long as the axial length of hole " Ak " becomes longer from the middle body of the first and second tips to hole " Ak ", then the shape of hole " Ak " is not limited to the hexagon illustrated in figs. 6 and 7.
[the 3rd embodiment]
According to the 3rd embodiment, magnetic flux guided rings 5 has three kinds of holes " Ak1 ", " Ak2 " and " Ak3 ".
With reference to Fig. 8 and 9, hole " Ak1 ", " Ak2 " and the shape of " Ak3 " will be described.Fig. 8 is the axonometric chart of the yoke according to the 3rd embodiment.Fig. 9 is the expansion view illustrating the magnetic flux leader according to the 3rd embodiment.
As it is shown in figure 9, the first rectangular opening " Ak1 " is formed between the first pontes 5c and the second coupling part 5d.Additionally, the second rectangular opening " Ak2 " is formed adjacent to the first rectangular opening " Ak1 " along the direction of rotation of armature 3.Second rectangular opening " Ak2 " is along the width ratio the first rectangular opening " Ak1 " of direction of rotation along the narrow width of direction of rotation.
Additionally, the 3rd rectangular opening " Ak3 " is formed adjacent to the second rectangular opening " Ak2 ".3rd rectangular opening " Ak3 " is along the width ratio the second rectangular opening " Ak2 " of direction of rotation along the narrow width of direction of rotation.
As above, three kinds of holes " Ak1 ", " Ak2 ", " Ak3 " are regularly arranged along the direction of rotation of armature 3.Therefore, total open area in hole gradually changes along the direction of rotation of armature 3.Changed also along the direction of rotation of armature 3 by the magnetic flux of magnetic flux guided rings 5, be derived from oblique function.Additionally, in the third embodiment, oblique function can limit magnetic variation together with the rotation of armature core, thus can limit vibration (cogging effect) and noise.
[the 4th embodiment]
According to the 4th embodiment, otch " S1 " be formed at magnetic flux guided rings 5 in part 5a.The shape of magnetic flux guided rings 5 will be described with reference to Figure 10 and 11.Figure 10 is the axonometric chart of the yoke according to the 4th embodiment.Figure 11 is the expansion view illustrating the magnetic flux leader according to the 4th embodiment.
Magnetic flux guided rings 5 has otch " S1 " at part 5a.Axially extending along axle 11 of rectangular slits " S1 ".This otch " S1 " improves the rotation efficiency of armature 3.
Specifically, when armature 3 rotates, generation magnetic field around magnetic flux guided rings 5, thus vortex flow is occurring in part 5a.Vortex flow is producing heat in part 5a.As a result, produce the energy loss corresponding to the heat produced, thus reduce the input energy (eddy current losses) for making armature 3 rotate.According to the 4th embodiment, eddy current path is blocked by otch " S1 ", thus is reduced vortex flow, and also reduces eddy current losses.
As shown in FIG. 10 and 11, along with the quantity of otch " S1 " increases larger, above-mentioned advantage (eddy current path is blocked) becomes more efficient.As long as otch " S1 " blocks eddy current path, then otch " S1 " can be to be formed in the way of the extension of the direction of rotation of armature 3.That is, otch " S1 " can axially or direction of rotation extend.
[the 5th embodiment]
As shown in Figures 12 and 13, multiple otch " S2 " are formed at regular intervals in part 5a.The shape of magnetic flux guided rings 5 will be described with reference to Figure 12 to 14.Figure 12 is the axonometric chart of the yoke according to the 5th embodiment.Figure 13 is the expansion view illustrating the magnetic flux leader according to the 5th embodiment.Figure 14 is the diagram of the advantage for explaining the 5th embodiment.
As shown in Figures 12 and 13, multiple otch " S2 " being axially formed at regular intervals in part 5a along axle 11.That is, magnetic flux guided rings 5 has well-regulated unevenness (unevenness) and multiple otch " S2 " on the surface of armature core 12 faced by it.In the unevenness of this rule, bossing is used as quasi-salient pole 16 (with reference to Figure 14).
As above, according to the 5th embodiment, the salient pole 16 that the direction of rotation along armature 3 arranges is formed in part 5a.As a result, magnetic flux passes through each salient pole 16.By in the face of the even density of the magnetic flux of part 5a formed.If magnetic flux localized clusters is in part 5a, then the magnetic flux intersected with coil can fluctuate, and this produces vibration and noise.On the other hand, according to the 5th embodiment, owing to being formed with passing through the even density of the magnetic flux in the face of part 5a, so the magnetic balance improved in motor 1, thus vibration and noise can be limited.
In addition, owing to salient pole 16 becomes higher, so the mechanical strength of salient pole 16 becomes much larger, and guarantee magnetic flux larger.
[sixth embodiment]
In the above-described embodiments, a certain amount of magnetic flux leaks into coupling part 5b from the face of part 5a.
According to sixth embodiment, coupling part 5b constructs as following, to reduce flux loss.The shape of magnetic flux guided rings 5 will be described with reference to Figure 15 to 18.Figure 15 is the axonometric chart of the yoke according to sixth embodiment.Figure 16 is the expansion view illustrating the magnetic flux leader according to sixth embodiment.Figure 17 is the axonometric chart of the yoke of the modification according to sixth embodiment.Figure 18 is the expansion view illustrating the magnetic flux leader according to the modification that figure 17 illustrates.
As shown in figs, magnetic flux guided rings 5 have connect adjacent in the face of the coupling part 5b of part 5a.In the face of the axial length of part 5a is substantially equal to the axial length of magnet block 4a.
Coupling part 5b is made up of the first pontes 5c being axially arranged at outside magnet block 4a and the second coupling part 5d.Specifically, the first and second coupling part 5c and 5d are U-shaped.In the face of two marginal portions of part 5a are defined as adjacent region 5e, coupling part 5c and 5d is connected to adjacent region 5e.That is, these adjacent region 5e are arranged in the two ends in the face of part 5a along the direction of rotation of armature 3.
Magnetic flux guided rings 5 has hole " Ak " adjacent between part 5a.In other words, adjacent in the face of part 5a and the first and second coupling part 5a (5c, 5d) restriction hole " Ak ".Each adjacent region 5e end line axially is arranged on magnet block 4a end line axially.Hole " Ak " two end lines axially are axially arranged in the outside of magnet block 4a.
As it has been described above, according to sixth embodiment, coupling part 5b is axially arranged at the outside of magnet block 4a.Therefore, the length of coupling part 5b becomes longer.That is, the magnetic resistance of coupling part 5b becomes much larger.It can flow into the 5a of coupling part from the face of part 5a by limiting magnetic flux.Can limiting magnetic flux leakage.
The annular material that above-mentioned magnetic flux guided rings 5 has wide portion by punching press at regular intervals is formed.Hole " Ak " is by being stamped and formed out in described wide portion.Coupling part 5b has the width that be enough to make magnetic flux guided rings 5 keep annular shape.
Alternatively, as shown in FIG. 17 and 18, magnetic flux guided rings 5 is formed by the annular material that punching press is wide.After hole " Ak " is by being stamped and formed out, remove the both sides of coupling part 5b.Remainder has the axial length identical with magnet block 4a.As shown in figure 18, removal part has width " d " along direction of rotation, it is preferable that width " d " is more than the twice of the air gap as the gap between stator and rotor.
[the 7th embodiment]
Figure 19 is the axonometric chart of the yoke according to the 7th embodiment.As shown in figure 19, in the face of part 5a, there is ledge 5t on its inner surface.This ledge 5t radially-inwardly highlights, and has rectangular shape.Magnet block 4a is radially disposed at the outside of ledge 5t.
Owing to ledge 5t is near armature core 12, so magnetic flux is efficiently introduced into armature core 12 from each magnet block 4a.Preferably, the axial length of ledge 5t is substantially equal to the axial length of armature core 12.
Figure 20 and 21 shows another modification.As shown in figs 20 and 21, stator 13 is made up of magnet ring.
Magnet ring (stator 13) has circumferentially magnetic regions 13a and magnetic regions 13a of S pole of the N pole that (direction of rotation of armature 3) alternately forms.Magnetic flux guided rings 5 can be set to above-mentioned structure.When arranging magnetic flux guided rings 5, hole " Ak " is to arrange in the way of the border in the territory, N polar region of magnet ring 13 and territory, S polar region.
In the above-described embodiments, motor 1 has the armature core 12 as rotor and the permanent magnet 13 as stator.Armature core 12 is arranged in the inner side of permanent magnet 13.In the following embodiments, motor has the armature core as stator and the permanent magnet as rotor.Armature core is arranged in the outside of permanent magnet.
[the 8th embodiment]
The structure of motor 101 will be described with reference to Figure 22 to 26A.Figure 22 is the axonometric chart of the motor 101 according to the 8th embodiment.Figure 23 is the top view of yoke.Figure 24 is the axonometric chart of the rotor according to the 8th embodiment.Figure 25 is the sectional view of the XXV-XXV line intercepting along Figure 22.Figure 26 A is the expansion view illustrating the magnetic flux leader according to the 8th embodiment.It should be noted that around tooth be wound around coil not shown in Figure 22 and 23.
Motor 101 is the brushless DC for automobile.In addition to magnetic flux guided rings 105, the structure of motor 101 is identical with well-known brushless electric machine, and this will be described later on.
That is, motor 101 has the case body 102 of cylinder, and stator core 104 and rotor 103 as armature core are contained in case body 102.Additionally, multiple magnet block 113 are circumferentially arranged on the cylindrical part 112 of rotor 103.In addition, shape and the arrangement of magnet block 113 is not limited to this.
Rotor 103 is arranged radially at middle body along case body 102.As depicted in figures 22 and 23, rotor 103 includes axle 111 and cylindrical part 112.Axle 111 is corresponding to the output shaft of motor 101.The direction of rotation of axle is corresponding to the direction of rotation of rotor 103.Cylindrical part 112 is supported by axle 111, to rotate together with the axis.
As it has been described above, multiple magnet block 113 are arranged on the outer surface of cylindrical part 112.Magnet block 113 produces magnetic flux towards stator core 104, so that rotor 103 rotates in case body 102.Magnet block 113 is arranged in the way of N pole and S pole the most alternately occur.
In the present embodiment, magnet block 113 is arranged at regular intervals, thus Existential Space between magnet block 113.
Stator core 104 is arranged in case body 102, and to be arranged in the outside of magnet block 113 in the way of rotor 103.As depicted in figures 22 and 23, stator core 104 has multiple tooth " T " and outer ring portion 104a.Each tooth " T " is T-shaped, and radially highlights towards rotor 103.The tip of tooth " T " is to arrange in the way of rotor 103.Coil (not shown) is wound around around each tooth " T ".When providing energy to coil, rotor 103 starts to rotate.
The quantity of tooth " T " can arbitrarily be set up.
The axial length of magnet block 113 is longer than the axial length of stator core 104.As shown in figure 25, each magnet block 113 is in the face of stator core 104.The two ends of magnet block 113 are along its outside being disposed axially in stator core 104.Stator core 104 is by being formed with stacking multiple iron core bar by the way of making the axially stacked length of stator core 104 unlike the axial length length of magnet block 113.
As shown in figure 25, magnet block 113 is arranged in length L1 outside stator core 104 and is substantially equal to magnet block 113 and is arranged in length L2 outside stator core 104 along another direction along direction.
In addition, the axial length of magnet block 113 can be equal to the axial length of stator core 104 or short than the axial length of stator core 104.
Magnetic flux guided rings 105 is arranged in case body 102.This magnetic flux guided rings 105 is corresponding to magnetic flux leader, and is arranged between magnet block 113 and stator core 104, and thus magnetic flux can be easily introduced to stator core 104 from magnet block 113.
Magnetic flux guided rings 105 has the function identical with the magnetic flux guided rings 5 in the first to the 7th embodiment.Additionally, due to magnetic flux guided rings 105 covers magnet block 113, so magnetic flux guided rings 105 is used as the protector of magnet block 113.Magnetic flux guided rings 105 is made up of soft magnetic material by the compression molding of soft magnetic material powder.
Magnetic flux guided rings 105 is fixed on the inner surface of each magnet block 113, thus protects each magnet block 113, from the uniform magnetic flux of each magnet block 113, and can improve anti-demagnetizing.In addition, magnetic flux guided rings 105 may utilize binding agent or other fixing component such as bolt and nuts are fixed in magnet block 113.
Although as it has been described above, the two ends of magnet block 113 are arranged in the outside of stator core 104, but magnetic flux is incorporated into stator core 104 by magnetic flux guided rings 105 from the two ends of magnet block 4a.
Owing to magnetic flux guided rings 105 is single part, so the quantity of parts can reduce.Magnetic flux guided rings 105 can be easily assembled into motor 101.
Other structures of magnetic flux guided rings 105 are substantially the same with magnetic flux guided rings 5 in the first embodiment with advantage.
The axial length of magnetic flux guided rings 105 is equal to the axial length of magnet block 113.The magnetic flux produced from the two ends of magnet block 113 and the magnetic flux produced from the middle body of magnet block 113 are incorporated into stator core 104.
As shown in Figure 24 to 26A, coupling part 5b is made up of the first pontes 105c and the second coupling part 105d.Therefore, limiting magnetic flux guided rings 105 distorts.
Additionally, the width of the first pontes 105c is substantially equal to the width of the second coupling part 105d.
Width d1, d2 of first and second coupling part 105c, 105d is less than the half of the axial length " X " of magnet block 113 and the difference of the axial length " Y " of stator core 104, as shown in figure 25.As long as guaranteeing that then the width of first and second coupling part 105c, 105d can be narrower for the joint face mechanical strength to part 105a.Therefore, can reduce from the face of part 105a is to the leakage of the magnetic flux of coupling part 105b.
Magnetic flux guided rings 105 has hole " Ak " between the first pontes 105c and the second coupling part 105d.The axial length " a " in hole " Ak " and width d1, d2 of first and second coupling part 105c, 105d meet equation below (5):
G=X=a+d1+d2 ... (5)
Wherein, " G " represents the axial length of magnetic flux guided rings 105.
Moreover it is preferred that the axial length " a " of hole " Ak " is more than the length " Y " of stator core 104.
Magnetic flux guided rings 105 is fixed to rotor 103 in the way of being arranged between magnet block 113 and stator core 104.After magnetic flux guided rings 105 is fixed to rotor 103, in the face of part 105a is overlapping with each magnet block 113, the border overlay of hole " Ak " and adjacent magnet block 113.Magnetic flux is appropriately introduced into stator core 104 from each magnet block 113.
Due to the border overlay of hole " Ak " with adjacent magnet block 113, so limiting magnetic flux leaks in the 105b of coupling part.
In the above-described embodiments, hole " Ak " is formed by the annular material of punching press magnetic.In addition to by being stamped and formed out hole " Ak ", the region corresponding to hole " Ak " can be formed by nonmagnetic substance.I.e., as shown in fig. 26b, magnetic flux guided rings 105 has mid portion 105e between 105c and 105d of coupling part.Magnetic flux guided rings 105 is made up of soft magnetic material, and only mid portion 105e passes through heat treatment demagnetization.Figure 26 B is the expansion view of the magnetic flux leader illustrating the modification according to the 8th embodiment.
Owing to magnetic flux guided rings 105 is attached to rotor 103 so that the gap between mid portion 105e and adjacent magnet block 113 is overlapping, so during limiting magnetic flux flows into the part in addition in the face of part 105a admirably.Additionally, due to need not be stamped or cut out annular material, so magnetic flux guided rings 105 can be readily available.Also can keep the mechanical strength of magnetic flux guided rings 105.
[the 9th embodiment]
In the 9th embodiment, hole " Ak " is shaped differently than the 8th embodiment.The shape of hole " Ak " will be described with reference to Figure 27 and 28.Figure 27 is the axonometric chart of the rotor according to the 9th embodiment.Figure 28 is the expansion view illustrating the magnetic flux leader according to the 9th embodiment.
Hole " Ak " is hexagon.As shown in figure 28, the hexagon being shaped as by reducing regular hexagon acquisition along direction of rotation of hole " Ak ".The diagonal that one end is most advanced and sophisticated and the other end is most advanced and sophisticated is connected orthogonal with the centrage of axle 111 along direction of rotation.
The axial length in hole " Ak " becomes longer from the middle body of the first and second tips to hole " Ak ".In other words, the open area of hole " Ak " gradually changes from two tips towards its central authorities.
Changed also along the direction of rotation of motor 101 by the magnetic flux of magnetic flux guided rings 105, be derived from oblique function.Oblique function can limit magnetic variation together with the rotation of motor 101, thus can limit vibration (cogging effect) and noise.
As long as the axial length of hole " Ak " becomes longer from the middle body of the first and second tips to hole " Ak ", then the shape of hole " Ak " is not limited to the hexagon shown in Figure 26 and 27.
[the tenth embodiment]
According to the tenth embodiment, magnetic flux guided rings 105 has three kinds of holes " Ak1 ", " Ak2 ", " Ak3 ", to obtain above-mentioned oblique effect.With reference to Figure 29 and 30, hole " Ak1 ", " Ak2 " and the shape of " Ak3 " will be described.Figure 29 is the axonometric chart of the rotor according to the tenth embodiment.Figure 30 is the expansion view illustrating the magnetic flux leader according to the tenth embodiment.
As shown in figure 30, the first rectangular opening " Ak1 " is formed between the first pontes 105c and the second coupling part 105d.Additionally, the second rectangular opening " Ak2 " is formed adjacent to the first rectangular opening " Ak1 " along the direction of rotation of motor 101.Second rectangular opening " Ak2 " is along the width ratio the first rectangular opening " Ak1 " of direction of rotation along the narrow width of direction of rotation.
Additionally, the 3rd rectangular opening " Ak3 " is formed adjacent to the second rectangular opening " Ak2 ".3rd rectangular opening " Ak3 " is along the width ratio the second rectangular opening " Ak2 " of direction of rotation along the narrow width of direction of rotation.
As above, three kinds of holes " Ak1 ", " Ak2 ", " Ak3 " are regularly arranged along the direction of rotation of motor 101.Therefore, total open area in hole gradually changes along the direction of rotation of motor 101.Gradually changed by the magnetic flux of magnetic flux guided rings 105.Result, it is thus achieved that oblique effect.The rotation magnetic variation together in company with motor 101, vibration (cogging effect) and noise can be limited.
[the 11st embodiment]
According to the 11st embodiment, in the face of part 105a has otch " S1 ", to alleviate its weight.The shape of magnetic flux guided rings 105 will be described with reference to Figure 31 and 32.Figure 31 is the axonometric chart of the rotor according to the 11st embodiment.Figure 32 is the expansion view illustrating the magnetic flux leader according to the 11st embodiment.
Part 105a faced by each has rectangular slits " S1 ".Magnetic flux guided rings 105 has otch " S1 " at part 105a.Axially extending along axle 111 of rectangular slits " S1 ".This otch " S1 " improves the rotation efficiency of motor 101.According to the mode similar with the 4th embodiment, eddy current path is blocked by otch " S1 ", thus is reduced vortex flow, and also reduces eddy current losses.
As shown in figs. 31 and 32, more along with otch " S1 " increases, and above-mentioned advantage (eddy current path is blocked) becomes more efficient.As long as otch " S1 " blocks eddy current path, then otch " S1 " can be to be formed in the way of the extension of the direction of rotation of motor 101.That is, otch " S1 " can axially or direction of rotation extend.
[the 12nd embodiment]
As seen in figs. 33 and 34, multiple otch " S2 " are formed in part 105a at regular intervals along the direction of rotation of motor 101.The shape of magnetic flux guided rings 105 will be described with reference to Figure 33 to 35.Figure 33 is the axonometric chart of the rotor according to the 12nd embodiment.Figure 34 is the expansion view illustrating the magnetic flux leader according to the 12nd embodiment.Figure 35 is the diagram of the advantage for explaining the 12nd embodiment.
As seen in figs. 33 and 34, multiple otch " S2 " being axially formed at regular intervals in part 105a along axle 111.That is, magnetic flux guided rings 105 has well-regulated unevenness and multiple otch " S2 " on the surface of stator core 104 faced by it.In the unevenness of this rule, bossing is used as salient pole 106 (with reference to Figure 35).
As above, according to the 12nd embodiment, salient pole 106 is formed in part 105a.Salient pole 106 arranges along the direction of rotation of motor 101.These salient poles 106 have the advantage identical with the salient pole 16 in the 5th embodiment.I.e., as shown in figure 35, owing to being formed with passing through the even density of the magnetic flux in the face of part 105a, so the magnetic balance improved in motor 101, thus vibration and noise can be limited.
In addition, owing to salient pole 106 becomes higher, so the mechanical strength of salient pole 106 becomes much larger, and guarantee magnetic flux larger.
[the 13rd embodiment]
According to the 13rd embodiment, coupling part 105b constructs as following, to reduce from the face of part 105a is to the leakage of the magnetic flux of coupling part 105b.The shape of magnetic flux guided rings 105 will be described with reference to Figure 36 to 39.Figure 36 is the axonometric chart of the rotor according to the 13rd embodiment.Figure 37 is the expansion view illustrating the magnetic flux leader according to the 13rd embodiment.Figure 38 is the axonometric chart of the rotor of the modification according to the 13rd embodiment.Figure 39 is the expansion view illustrating the magnetic flux leader according to the modification that figure 38 illustrates.
In the face of the axial length of part 105a is substantially equal to the axial length of magnet block 113.Coupling part 105b is made up of the first pontes 105c being axially arranged at outside magnet block 113 and the second coupling part 105d.Specifically, the first and second coupling part 105c and 105d are U-shaped.In the face of two marginal portions of part 105a are defined as adjacent region 105f, coupling part 105c and 105d is connected to adjacent region 105f.That is, these adjacent region 105f are arranged in the two ends in the face of part 105a along the direction of rotation of motor 101.
Magnetic flux guided rings 105 has hole " Ak " adjacent between part 105a.Part 105a faced by adjacent and the first and second coupling part 105a (105c, 105d) limit hole " Ak ".Each adjacent region 105f in the face of part 105a is axially in the face of the both ends of magnet block 113.Axial two ends in hole " Ak " are arranged in the outside of magnet block 113.Coupling part 105b is axially arranged at the outside of magnet block 4a, and thus, the length of coupling part 105b becomes longer.As a result, the magnetic resistance of coupling part 105b becomes much larger.Can flow into the 105a of coupling part from the face of part 105a by limiting magnetic flux.Can limiting magnetic flux leakage.
The annular material that above-mentioned magnetic flux guided rings 105 has wide portion by punching press at regular intervals is formed.Hole " Ak " is by being stamped and formed out in described wide portion.Coupling part 105b has the width that be enough to make magnetic flux guided rings 105 keep annular shape.
Alternatively, as shown in figures 38 and 39, magnetic flux guided rings 105 is formed by the annular material that punching press is wide.After hole " Ak " is by being stamped and formed out, remove the both sides of coupling part 105b.Remainder has the axial length identical with magnet block 113.As shown in figure 39, removal part has width " d " along direction of rotation, and preferably, width " d " is more than the twice of the air gap as the gap between stator and rotor.
[the 14th embodiment]
As shown in figure 40, on the outer surface of stator core 104 faced by it, there is ledge 105t in the face of part 105a.This ledge 105t projects radially outwardly, and has rectangular shape.Magnet block 113 is radially disposed at the inner side of ledge 105t.Figure 40 is the axonometric chart of the rotor according to the 9th embodiment.
Owing to ledge 105t is near stator core 104, so magnetic flux is efficiently introduced into stator core 104 from each magnet block 113.Preferably, the axial length of ledge 105t is substantially equal to the axial length of stator core 104.
[the 15th embodiment]
According to the 15th embodiment, as shown in figure 41, coupling part 105s is from the cylindrical part 112 extending to axle 111 in the face of the axial end portion of part 105a.Coupling part 105a is connected to the end surfaces of cylindrical part 112.In other words, as shown in figure 41, the end surfaces of coupling part 105a connecting cylinder shape part 112 and each in the face of part 105a.Additionally, part 105a is connected to each other by cylindrical part 112 faced by each.
More specifically, coupling part 105s is formed at the axial end portion in the face of part 105a, and coupling part 105s is arranged in the middle body of the periphery, end in the face of part 105a.Coupling part 105s highlights with right angle from the face of part 105a, and its tip is connected to the end surfaces of cylindrical part 112.Therefore, each it is connected to each other by cylindrical part 112 in the face of part 105a.Additionally, magnet block 113 is arranged between adjacent coupling part 105s.Coupling part 105s is used as to keep the keeper of magnet block 113.
In above-mentioned 8th to the 15th embodiment, multiple magnet block 113 is set.These magnet block 113 may be configured to annular shape.Magnet ring has magnetic regions and the magnetic regions of S pole of the N pole circumferentially alternately formed.The magnetic flux guided rings 105 hole " Ak " in magnetic flux guided rings 105 is arranged in the way of the border overlay of magnetic regions.
In the 8th to the 14th embodiment, magnetic flux guided rings 105 is fixed to the cylindrical part 112 of rotor 103 by compressing the end of (caulk) magnetic flux guided rings 105.Below with reference to Figure 42 to 49, the method for fixing magnetic flux guided rings 105 is described.Figure 42 to 45 shows the first method for fixing magnetic flux guided rings 105.Figure 42 is the sectional view of the rotor of the axle intercepting along motor.Figure 43 is the top view illustrating cylindrical part along the axial end of motor.Figure 44 is the zoomed-in view in " M " region in Figure 42.Figure 45 is the zoomed-in view in " N " region in Figure 42.Figure 46 shows the second method for fixing magnetic flux guided rings 105.Figure 47 to 49 shows the third method for fixing magnetic flux guided rings 105.Figure 47 is the axonometric chart of the rotor illustrating that magnetic flux guided rings 105 is fixed thereon.Figure 48 is the sectional view of the rotor of the axle intercepting along motor.Figure 49 is the top view illustrating cylindrical part along the axial end of motor.
According to first method, as shown in figure 42, the first end of magnetic flux guided rings 105 is pressed on cylindrical part 112, and this first end corresponds to region " M ", the second end of magnetic flux guided rings 105 contacts with cylindrical part 112, and this second end corresponds to region " N ".Therefore, magnetic flux guided rings 105 is fixed to rotor 103.
More specifically, rotor 103 has fixed ring piece 103b in one end of cylindrical part 112.This fixed ring piece 103b has the diameter bigger than the diameter of cylindrical part 112.The second end of magnetic flux guided rings 105 is pressed on fixed ring piece 103b, as shown in figure 45.
The first end of magnetic flux guided rings 105 is pressed on cylindrical part 112, as shown in figure 44.
Therefore, magnetic flux guided rings 105 is fixed to the cylindrical part of rotor 103.In addition, in the case of fixed ring piece 103b is made up of magnetic material, it is preferred that square wave shaped cutout 103c is formed at regular intervals along the periphery of fixed ring piece 103b, with limiting magnetic flux short circuit, as shown in figure 43.Meanwhile, in the case of fixed ring piece 103b is made up of nonmagnetic substance, it is not necessary to above-mentioned square wave shaped cutout 103c.
It follows that second method for fix magnetic flux guided rings 105 is described below.As shown in figure 46, the two ends of magnetic flux guided rings 105 are pressed on cylindrical part 112.Specifically, cylindrical part 112 has fixed ring piece 103b at its two ends.The two ends of magnetic flux guided rings 105 are pressed on fixed ring piece 103b respectively.
It follows that third method for fix magnetic flux guided rings 105 is described below.Motor 101 is alternately polar form motor.That is, as shown in Figure 47 and 48, magnet block 113 only have N pole and S extremely in a pole.Another pole is formed, as quasi-pole 114 by the salient pole iron core being arranged between magnet block 113.
That is, cylindrical part 112 has the quasi-pole 114 arranged at regular intervals.Cylindrical part 112 has recessed portion, and magnet block 113 is separately positioned in the female part.In the present embodiment, magnetic flux guided rings 105 engages with quasi-pole 114, so that magnetic flux guided rings 105 is fixed to rotor 103.
More specifically, when magnetic flux guided rings 105 is radially disposed at rotor 103 outside, axial two ends of magnetic flux guided rings 105 highlight from the end surfaces of cylindrical part 112.This ledge is pressed on the end surfaces of cylindrical part 112, so that magnetic flux guided rings 105 engages with a part for quasi-pole 114.
[other embodiments]
Although described the disclosure with reference to embodiment of the disclosure it should be understood that, the disclosure is not limited to embodiment and structure.The disclosure is intended to cover various modification and equivalent arrangements.Although it addition, various combination and structure, but including other combinations of more, less or only a single element and construct also in the spirit and scope of the disclosure.
That is, in the face of part 5a, 105a and coupling part 5b, 105b, 105s can be individually formed in advance.Then, these parts link together, to form magnetic flux guided rings.
In the above-described embodiments, motor is used for automobile.The motor of the disclosure can be used for ships, aircraft, building, house etc..
Claims (13)
1. a motor, including:
Armature core (12)；
Permanent magnet (4,4a, 13,13a, 113), in the face of armature core；And
Magnetic leader (5,105), is arranged between permanent magnet (4,4a, 13,13a, 113) and armature core (12), for being incorporated into armature core from permanent magnet by magnetic flux, wherein:
Permanent magnet (4,4a, 13,13a, 113) has the multiple magnetic fields arranged in the way of magnetic pole alternately changes along the direction of rotation of motor；
Magnetic leader (5,105) includes in the face of the direction of rotation in the face of part (5a, 105a) and along motor in each magnetic field connects the coupling part (5b, 105b) of part faced by adjacent two,
(5b, 105b) including in coupling part:
The first pontes (5c, 105c), connects adjacent two respectively in the face of the axial first end of part (5a, 105a)；And
Second coupling part (5d, 105d), connect respectively described adjacent two in the face of the axial the second end of part (5a, 105a),
Magnetic leader (105) has mid portion (105e) between the first pontes (105c) and the second coupling part (105d)；
In the face of part (105a), the first pontes (105c), the second coupling part (105d) and mid portion (105e) are made up of soft magnetic material；
Only have mid portion (105e) by heat treatment demagnetization.
Motor the most according to claim 1, it is characterised in that:
The first pontes (5c, 105c) He the second coupling part (5d, length each in 105d) is less than permanent magnet (4,4a, 13,13a) half of the difference of the axial length (Y) of axial length (X) and armature core (12).
Motor the most according to claim 1, it is characterised in that:
Arrange in the way of the magnetic leader (105) border overlay between mid portion (105e) with described adjacent magnetic field.
Motor the most according to claim 1 and 2, it is characterised in that:
Magnetic leader (5,105) has hole (Ak) between the first pontes (5c, 105c) and the second coupling part (5d, 105d).
Motor the most according to claim 4, it is characterised in that:
Arrange in the way of the magnetic leader (5,105) border overlay between hole (Ak) with described adjacent magnetic field.
Motor the most according to claim 5, it is characterised in that:
Hole (Ak) have along direction of rotation extend to adjacent two in the face of part (5a, 105a) in the end of at least one；And
Hole length axially is elongated along direction of rotation towards the central authorities in hole from described end.
Motor the most according to claim 5, it is characterised in that:
Magnetic leader (5,105) has the second hole (Ak2) being formed along direction of rotation near hole (Ak1)；And it is formed along the direction of rotation the 3rd rectangular opening (Ak3) near the second rectangular opening (Ak2), wherein:
Second hole (Ak2) is along the width ratio hole (Ak1) of direction of rotation along the narrow width of direction of rotation, and the 3rd hole (Ak3) is along width ratio second hole (Ak2) of direction of rotation along the narrow width of direction of rotation.
8. according to the motor described in any one in claims 1 to 3, it is characterised in that:
Magnetic leader (5,105) has otch (S1) in the face of part (5a, 105a) place；And
Otch (S1) is the axially extended rectangular slits of the direction of rotation along motor or motor.
Motor the most according to claim 8, it is characterised in that:
Magnetic leader (5,105) has multiple otch (S1) in the face of part (5a, 105a) place；And
Axially extending along motor of each otch, and arrange at regular intervals along direction of rotation.
Motor the most according to claim 1, it is characterised in that:
Permanent magnet (4,4a, 13,13a, 113) is longer along the axial axial length of motor than armature core along the axial axial length of motor；And
The axial length of magnetic leader (5,105) is substantially equal to permanent magnet (4,4a, 13,13a, 113) length axially.
11. motors according to claim 1, it is characterised in that:
(5b, 105b) including in coupling part:
The first pontes (5c, 105c), connects adjacent two respectively in the face of the axial first end of part (5a, 105a)；
Second coupling part (5d, 105d), connect respectively described adjacent two in the face of the axial the second end of part (5a, 105a), wherein,
The first pontes (5c, 105c) and the second coupling part (5d, 105d) are arranged in the permanent magnet (4,4a, 13,13a, the 113) outside along the axial two ends of permanent magnet (4,4a, 13,13a, 113).
12. motors according to claim 11, it is characterised in that:
Magnetic leader (5,105) has by the first pontes (5c, 105c), the second coupling part (5d, 105d) and described two adjacent holes (Ak) limited in the face of part (5a, 105a)；
Faced by each, part (5a, 105a) has adjacent region (5e, 105f), first and second coupling part (5c, 5d, 105c, 105d) direction of rotation along motor is connected to described adjacent region (5e, 105f)；
Each adjacent region (5e, 105f) end line axially is arranged on permanent magnet (4,4a, 13,13a, 113) end line axially；And
Hole (Ak) end line axially is arranged in the outside of permanent magnet (4,4a, 13,13a, 113) end line axially.
13. according to the motor described in any one in claims 1 to 3 and 10 to 12, it is characterised in that:
Magnetic leader (5,105) is formed by single annular construction member.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP161926/2011 | 2011-07-25 | ||
| JP2011161926 | 2011-07-25 | ||
| JP2011227230 | 2011-10-14 | ||
| JP227230/2011 | 2011-10-14 | ||
| JP2011227229 | 2011-10-14 | ||
| JP227229/2011 | 2011-10-14 |
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| Publication Number | Publication Date |
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| CN102904351A CN102904351A (en) | 2013-01-30 |
| CN102904351B true CN102904351B (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210260068.4A Expired - Fee Related CN102904351B (en) | 2011-07-25 | 2012-07-25 | Motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105207380A (en) * | 2014-06-16 | 2015-12-30 | 德昌电机(深圳)有限公司 | Motor and rotor thereof |
| JP6560588B2 (en) * | 2015-10-08 | 2019-08-14 | 住友電気工業株式会社 | Induction heating apparatus and power generation system |
| CN106057397B (en) * | 2016-07-20 | 2019-02-01 | 浙江品创知识产权服务有限公司 | Multi-pole magnet-ring |
| CN106057398B (en) * | 2016-07-20 | 2019-02-26 | 浙江品创知识产权服务有限公司 | Multi-pole magnet-ring |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4587449A (en) * | 1982-11-22 | 1986-05-06 | Lucas Industried Limited | Permanent magnet rotary dynamo electric machine |
| US5723929A (en) * | 1995-09-19 | 1998-03-03 | Nippondenso Co., Ltd. | D.C. Motor with primary and auxiliary magnetic poles |
| CN101232205A (en) * | 2008-01-25 | 2008-07-30 | 东南大学 | Variable flux permanent magnet synchronous motor |
-
2012
- 2012-07-25 CN CN201210260068.4A patent/CN102904351B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4587449A (en) * | 1982-11-22 | 1986-05-06 | Lucas Industried Limited | Permanent magnet rotary dynamo electric machine |
| US5723929A (en) * | 1995-09-19 | 1998-03-03 | Nippondenso Co., Ltd. | D.C. Motor with primary and auxiliary magnetic poles |
| CN101232205A (en) * | 2008-01-25 | 2008-07-30 | 东南大学 | Variable flux permanent magnet synchronous motor |
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