CN101447705B - Magnet-embedding type motor and manufacture method thereof - Google Patents
Magnet-embedding type motor and manufacture method thereof Download PDFInfo
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- CN101447705B CN101447705B CN200810178386XA CN200810178386A CN101447705B CN 101447705 B CN101447705 B CN 101447705B CN 200810178386X A CN200810178386X A CN 200810178386XA CN 200810178386 A CN200810178386 A CN 200810178386A CN 101447705 B CN101447705 B CN 101447705B
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Abstract
In a magnet-embedding type motor, a N electrode is composed of a radial magnet (9) and a first inclined magnet (71); a S electrode is composed of the radial magnet (9) and a second inclined magnet (72); each chip (11) is provided with P/2 front-overlopping radial acceptance holes (11a, 11b), some of which are short holes (11a), another are long holes (11b). The short holes (11a) are arranged on axial part of each radial acceptance hole (8a). The axial inner end of the short holes (11a) limit the radial magnet (9) to move along an axial direction inside.
Description
Technical field
The present invention relates to a kind of magnet type motor and manufacturing approach thereof imbedded.
Technical background
(Japan Patent) spy opens the rotor core of imbedding the magnet type motor of 2007-195391 communique, has P/2 radially accommodation hole, P/2 first an inclination accommodation hole and P/2 the second inclination accommodation hole.From axially, each is accommodation hole radially, all roughly towards the radially extension of rotor core.The pair of holes that the first inclination accommodation hole and the second inclination accommodation hole are formed, the V word accommodation hole of a V font of formation.Each is accommodation hole radially, is holding radial magnet respectively.Each first inclination accommodation hole is holding the first inclination magnet respectively.Each second inclination accommodation hole is holding the second inclination magnet respectively.The adjacent radial magnet and the first inclination magnet constitute the N utmost point.The adjacent radial magnet and the second inclination magnet constitute the S utmost point.Its result constitutes P/2 the N utmost point and P/2 the S utmost point.
The radial inner end of the radial magnet of above-mentioned communique is all seamlessly surrounded by the wall of the radial inner end of accommodation hole radially.
Summary of the invention
The object of the invention, what be to provide a kind of novelty imbeds magnet type motor and manufacturing approach thereof.
According to a viewpoint of the present invention, provide have a rotor imbed the magnet type motor.Call rotor axis to the axis of rotor.This rotor has rotor core, a P/2 radial magnet, P/2 first an inclination magnet and P/2 the second inclination magnet.This rotor core has P/2 radially accommodation hole, P/2 first an inclination accommodation hole and P/2 the second inclination accommodation hole.Radially accommodation hole, the first inclination accommodation hole and the second inclination accommodation hole run through rotor core respectively in the axial direction.Each is accommodation hole radially, roughly towards the radially extension of rotor core.The first inclination accommodation hole and the second inclination accommodation hole, the mode to tilt respectively with respect to accommodation hole radially, the shape that is in line extends.The pair of holes that the first inclination accommodation hole and the second inclination accommodation hole are formed, the V word accommodation hole of formation V font.V-shape is convex at the rotor core radially outer.Radially accommodation hole and V word accommodation hole are in the mutual alternate configurations of the circumferencial direction of rotor core.Each is accommodation hole radially, is holding radial magnet respectively.Each first inclination accommodation hole is holding the first inclination magnet respectively.Each second inclination accommodation hole is holding the second inclination magnet respectively.Each radial magnet is between the first inclination magnet and the second inclination magnet.At the circumferencial direction adjacent radial magnet and the first inclination magnet, constitute the N utmost point and the S utmost point in extremely.At the circumferencial direction adjacent radial magnet and the second inclination magnet, constitute the N utmost point and S another utmost point in extremely.Its result constitutes P/2 the N utmost point and P/2 the S utmost point.That is to say that the number of magnetic poles of rotor is P.Rotor core through many chips axial range upon range of formation.Every chip all has radially accommodation hole of P/2 prestack.Each prestack is accommodation hole radially, is distributed in the circumferencial direction of chip.Through each prestack accommodation hole range upon range of radially, form radially accommodation hole.Radially in the accommodation hole, have several is short holes to prestack, and other are slotted holes.The radial inner end in short hole and the distance between the rotor axis, being called is the first radius distance R1.The distance between the radial inner end of slotted hole and the rotor axis, be called the second radius distance R2.Set R2＜R1.Short hole, is positioned on the axial part radially in the accommodation hole at each.Its result, the radial inner end in short hole, the restriction radial magnet moves towards inner radial.
According to another viewpoint of the present invention, each prestack is the radial dimension of accommodation hole radially, and all specific diameter wants big to the radial dimension of magnet.Every chip has at least one towards prestack outstanding protuberance in the accommodation hole radially.With respect to radially vertical direction, be called Width.Each protuberance, radially in the accommodation hole, only outstanding at prestack from one side of Width.Protuberance, is positioned on axial at least a portion radially in the accommodation hole at each.Its result, protuberance restriction radial magnet moves towards inner radial.
According to another viewpoint of the present invention, every chip all has P/2 prestack radially accommodation hole, P/2 first a prestack inclination accommodation hole and P/2 the second prestack inclination accommodation hole.Each prestack is accommodation hole radially, is distributed in the circumferencial direction of chip.Through a plurality of prestacks accommodation hole range upon range of radially, form radially accommodation hole.Range upon range of through a plurality of first prestack inclination accommodation holes forms the first inclination accommodation hole.Range upon range of through a plurality of second prestack inclination accommodation holes forms the second inclination accommodation hole.In every chip, all have several prestacks radially accommodation hole be both sides' intercommunicating pores, remaining is a separate wells.The radial inner end of each both sides' intercommunicating pore all with at the adjacent first prestack inclination accommodation hole of circumferencial direction and the both sides of the second prestack inclination accommodation hole is communicated with.Each separate wells is not communicated with the first prestack inclination accommodation hole and the second prestack inclination accommodation hole.Between the separate wells and the first prestack inclination accommodation hole, there is internal bridge.Between the separate wells and the second prestack inclination accommodation hole, also there is an internal bridge.Radially in the accommodation hole, separate wells is positioned on the axial part at each.Its result, the corresponding first inclination magnet and the second inclination magnet of internal bridge restriction moves towards inner radial.
According to another viewpoint of the present invention, at least one chip, it is folk prescription intercommunicating pores that its prestack radially has several in the accommodation hole.The folk prescription intercommunicating pore is communicated with a accommodation hole in the first prestack inclination accommodation hole and the second prestack inclination accommodation hole, is not communicated with another accommodation hole.That is to say, between another accommodation hole and folk prescription intercommunicating pore in the first prestack inclination accommodation hole and the second prestack inclination accommodation hole, have internal bridge.Radially in the accommodation hole, the folk prescription intercommunicating pore is positioned on axial at least a portion at each.
According to another viewpoint of the present invention, at least one chip, radially in the accommodation hole, having several is outstanding intercommunicating pores at prestack.The radial inner end of outstanding intercommunicating pore and is communicated with at the circumferencial direction adjacent first inclination accommodation hole and the second inclination accommodation hole.In the radial inner end of outstanding intercommunicating pore, be provided with towards the outstanding restricting projection of radially outer.Outstanding intercommunicating pore, is present on axial at least a portion radially in the accommodation hole at each.Its result, restricting projection, the restriction radial magnet moves towards inner radial.Restricting projection through limiting the first inclination magnet and the second inclination magnet moves towards inner radial, is bumped the first inclination magnet and the second inclination magnet and is not received radial magnet.
According to another viewpoint of the present invention, from axial read fortune for the vertical direction of accommodation hole bearing of trend radially, be called Width.Each radially the radial outer end of accommodation hole have wide hole.Second width dimensions in each wide hole is greater than first width dimensions of radial magnet.In accommodation hole radially, form than wide hole more at the protuberance of inner radial.The partial width size of the radially accommodation hole that narrows because of protuberance is less than first width dimensions of radial magnet.Its result, protuberance restriction radial magnet moves towards radially outer.Call big width radial dimension Y to the radial dimension in wide hole.The thick thick T of chip that calls of the sheet of chip.Set Y≤4T.
According to another viewpoint of the present invention, between the radial outer end and rotor core outer peripheral face of accommodation hole radially, there is outside bridge.Radial dimension outside bridge is called AB.Between the outer peripheral face of the radial outer end of V word accommodation hole and rotor core, there is the outside bridge in V hole.The radial dimension of the outside bridge in V hole also is AB.Between the radial outer end of the radial outer end of the first inclination accommodation hole and the second inclination accommodation hole, there is bridge between angling hole.The width dimensions of bridge between angling hole, be called bridge size BB between angling hole.Set BB＞AB.
According to another viewpoint of the present invention, between the radial inner end of the radial inner end of accommodation hole radially and the first inclination accommodation hole, there is internal bridge.Between the radial inner end of the radial inner end of accommodation hole radially and the second inclination accommodation hole, also there is another internal bridge.The width dimensions of each internal bridge, be called internal bridge size CB.Between the radial outer end of the radial outer end of the first inclination accommodation hole and the second inclination accommodation hole, there is bridge between angling hole.The width dimensions of bridge between angling hole, be called bridge size BB between angling hole.Set BB＞CB.
According to another viewpoint of the present invention, imbed the magnet type motor, have Magnetic Sensor.Magnetic Sensor is through detecting the axial magnetic leakage flux from rotor, the rotation that comes detection rotor.Magnetic Sensor is configured to the axial end of rotor face-to-face, and is in the radially outer zone.Be configured in the Magnetic Sensor of radially outer zone state, detect magnetic flux.In the rotor rotation process, at Magnetic Sensor through during between the first inclination magnet and the second inclination magnet, the both positive and negative polarity of magnetic flux, only counter-rotating is once in the one-period of magnetic flux change.
According to another viewpoint of the present invention, the manufacturing approach of imbedding the magnet type motor is provided.This manufacturing approach comprises: with the axial end aspectant step of magnetic sensor configuration one-tenth with rotor; Radial position with through the change Magnetic Sensor makes and in each radial position, all measures the determination step by the detected magnetic characteristic of Magnetic Sensor.In addition, this manufacturing approach also comprises the result according to determination step, confirms the radially outer zone, thus the positioning step that in the radially outer zone, Magnetic Sensor is positioned.
Other characteristics of the present invention and advantage can specify through following accompanying drawing and embodiment.
Description of drawings
Fig. 1 is the plane graph of imbedding the magnet type motor that first embodiment of the invention relates to.
Figure 1A is the radially inner enlarged drawing of accommodation hole of Fig. 1.
Fig. 2 is the plane graph of Fig. 1 chip.
Fig. 3 is the amplification stereogram of Fig. 1 rotor core.See the stereogram of inner radial from radially outer.
Fig. 4 is the performance plot that expression concerns between overlapping dimension R and the radial magnet magnetic susceptibility shown in Figure 1A.Overlapping dimension R is the lap in opposite face SX and short hole.
Fig. 5 is the plane graph of imbedding the magnet type motor of second execution mode.
Fig. 6 is the plane graph of Fig. 5 chip.
Fig. 7 is the amplification stereogram of Fig. 5 rotor core.See the stereogram of radially outer from inner radial.
Fig. 8 is the amplification stereogram reverse with Fig. 7.See the stereogram of inner radial from radially outer.
Fig. 9 is the plane graph of the 3rd execution mode chip.
Figure 10 is the amplification stereogram of the rotor core that forms of range upon range of Fig. 9 chip.See the stereogram of radially outer from inner radial.
Figure 11 is the plane graph of imbedding the magnet type motor of the 4th execution mode.
Figure 12 is the plane graph of Figure 11 chip.
Figure 13 is the amplification stereogram of Figure 11 rotor core.See the stereogram of inner radial from radially outer.
Figure 14 is the plane graph of imbedding the magnet type motor of the 5th execution mode.
Figure 15 is the plane graph of Figure 14 chip.
Figure 16 is the amplification stereogram of Figure 14 rotor core.See the stereogram of inner radial from radially outer.
Figure 17 is the plane graph of the 6th execution mode chip.
Figure 18 is the plane graph of imbedding the magnet type motor of the 7th execution mode.
Figure 19 is the plane graph of Figure 18 chip.
Figure 20 is the amplification stereogram of Figure 18 rotor core.See the stereogram of inner radial from radially outer.
Figure 21 is the plane graph of imbedding the magnet type motor of the 8th execution mode.
Figure 22 is the plane graph of Figure 21 chip.
Figure 23 is the stereogram of Figure 21 rotor core.
Figure 23 A is the radially amplification stereogram of the radial inner end of accommodation hole of Figure 23.
Figure 24 is the plane graph of imbedding the magnet type motor of the 9th execution mode.
Figure 25 is the plane graph of Figure 24 chip.
Figure 26 is the stereogram of Figure 24 rotor core.
Figure 26 A is the radially amplification stereogram of the radial inner end of accommodation hole of Figure 26.
Figure 27 be the tenth execution mode imbed magnet type motor plane graph.
Figure 28 is the plane graph of Figure 27 chip.
Figure 29 is the stereogram of Figure 27 rotor core.
Figure 29 A is the radially amplification stereogram of the radial inner end of accommodation hole of Figure 29.
Figure 30 is the plane graph of imbedding the magnet type motor of the 11 execution mode.
Figure 31 is the plane graph of Figure 30 chip.
Figure 32 is the stereogram of Figure 30 rotor core.
Figure 32 A is the radially amplification stereogram of the radial inner end of accommodation hole of Figure 32.
Figure 33 is the plane graph of imbedding the magnet type motor of the 12 execution mode.
Figure 34 is the plane graph of Figure 33 chip.
Figure 35 is the stereogram of Figure 33 rotor core.
Figure 35 A is the radially amplification stereogram of the radial inner end of accommodation hole of Figure 35.
Figure 36 is the plane graph of imbedding the magnet type motor of the 13 execution mode.
Figure 37 is the plane graph of Figure 36 chip.
Figure 38 is the stereogram of Figure 36 rotor core.
Figure 38 A is the radially amplification stereogram of the radial inner end of accommodation hole of Figure 38.
Figure 39 is the plane graph of imbedding the magnet type motor of the 14 execution mode.
Figure 40 A is the cascade partial side view of chip of Figure 39.
The amplification view in the wide hole of Figure 40 B Figure 29.
The amplification view of the radial outer end of Figure 40 C Figure 29 V word accommodation hole.
Figure 40 D is the amplification view of the radial inner end of Figure 29 V word accommodation hole.
Figure 41 is the radial dimension in wide hole and the performance plot between the rotor physique ratio.
Figure 42 is the chart of rotor physique ratio.
The longitudinal section of imbedding the magnet type motor of Figure 43 the 15 execution mode.
Figure 44 is the plane graph of Figure 43 rotor and stator.The expression yoke is inner.
Figure 45 is the amplification view of Figure 44 V word accommodation hole.
Figure 46 is the amplification view of the determination step measured of the position of selecting hole IC in Figure 45.
Figure 47 is the anglec of rotation-magnetic flux density performance plot with Figure 46 hole IC51a～51e corresponding characteristics curve Za～Ze.
Figure 48 is the anglec of rotation-magnetic flux density performance plot with Figure 46 hole IC51f～51h corresponding characteristics curve Zf～Zh.
Embodiment
Fig. 1～Fig. 3, first execution mode that the present invention has been specialized in expression.
Fig. 1 representes that first execution mode relates to imbeds the magnet type motor.Imbed the magnet type motor, have stator 1 and rotor 2.Imbedding the magnet type motor is the inner-rotor type motor.The axis of rotor 2, promptly central axis is called rotor axis 13.
Fig. 2 representes a chip 11.Rotor core 8, range upon range of through many chips 11 as shown in Figure 3 axially, and form the approximate circle tubular.With every chip 11, around rotor axis 13, in a circumferential direction, respectively stagger 360 °/(P/2) carry out range upon range of.That is to say, in the first embodiment, every chip 11 changeed 90 ° carry out range upon range of.Every chip 11 all has four connections with hole 18.As the rivet 19 of coupling components, intert connection with hole 18, many chips 11 are connected and fixed.In the centre bore of rotor core 8, inlaying rotating shaft 7.Its result, rotor core 8 rotatably is supported on the inside of stator 1.
Rotor core 8 has four radially accommodation hole 8a, four first inclination accommodation holes 81 and four second inclination accommodation holes 82.The pair of holes that the first inclination accommodation hole 81 and the second inclination accommodation hole 82 are formed constitutes a V word accommodation hole 8b.From axially seeing rotor core 8, each V word accommodation hole 8b is the approximate V font of convex at the radially outer of rotor core 8.The pair of holes that the first inclination accommodation hole 81 and the second inclination accommodation hole 82 are formed, more towards radially outer, each other the closer to.That is to say that rotor core 8 has four V word accommodation hole 8b.The first inclination accommodation hole 81 and the second inclination accommodation hole 82 respectively with respect to rotor core 8 radially, are the linearity that favours the direction that has nothing in common with each other each other.Each connects with hole 18, is positioned at the center of V word accommodation hole 8b.That is to say that each connects with hole 18, between the first inclination accommodation hole 81 and the second inclination accommodation hole 82.The first inclination accommodation hole 81 and the second inclination accommodation hole 82 are not communicated with each other mutually, and be promptly independently of one another.In Fig. 1, each first inclination accommodation hole 81 with respect to adjacent radially accommodation hole 8a, is positioned at and is rotated counterclockwise direction.Each second inclination accommodation hole 82, the radially accommodation hole 8a with respect to adjacent is positioned at the dextrorotation veer.
In radially accommodation hole 8a and V word accommodation hole 8b, axially interting the accommodation hole of rotor core 8 respectively.Each is accommodation hole 8a radially, towards the radially extension of rotor core 8.Each is accommodation hole 8a radially, is holding radial magnet 9 respectively.Each first inclination accommodation hole 81 is holding the first inclination magnet 71.Each second inclination accommodation hole 82 is holding the second inclination magnet 72.The radial magnet 9 adjacent one another are and the first inclination magnet 71 constitute the N utmost point.The radial magnet 9 adjacent one another are and the second inclination magnet 72 constitute the S utmost point.Its result, rotor core 8 has four N utmost points and four S utmost points.Radial magnet 9, the first inclination magnet 71 and the second inclination magnet 72 are considered in accommodation hole 8a radially and V word accommodation hole 8b and are inserted easily, magnetize afterwards in the accommodation hole 8a and V word accommodation hole 8b being configured to radially again.
As shown in Figure 1, each is the radial outer end of accommodation hole 8a radially, has the wide hole 8c as big wide.From axially seeing rotor core 8,, be called Width with respect to radially vertical direction.With the width dimensions of each wide hole 8c, it is big to the width dimensions of magnet 9 to set specific diameter for.That is to say, the width dimensions of each wide hole 8c is bigger than the width dimensions of the part except that the wide hole 8c of accommodation hole 8a radially.Wide hole 8c is at the axial whole rotor core 8 that connects.
As shown in Figure 1, rotor core 8 at each radial outer end of accommodation hole 8a radially, has a plurality of exterior periphery direction protuberance 8d.Pair of outer circumferencial direction protuberance 8d is from each circumferencial direction both sides of accommodation hole 8a radially, towards radially accommodation hole 8a is inner, in the outstanding respectively same amount of circumferencial direction.Pair of outer circumferencial direction protuberance 8d does not bump mutually and connects.Each exterior periphery direction protuberance 8d is positioned at than wide hole 8c more in inner radial.That is to say that radially between accommodation hole 8a and the wide hole 8c, 8d attenuates because of exterior periphery direction protuberance at each.Width dimensions between the pair of outer circumferencial direction protuberance 8d, specific diameter is little to the width dimensions of the width dimensions of accommodation hole 8a and wide hole 8c.Each exterior periphery direction protuberance 8d is the outside protuberance that restriction radial magnet 9 moves towards radially outer.That is to say that each exterior periphery direction protuberance 8d is the offset that prevents radial magnet 9.
As shown in Figure 3, each exterior periphery direction protuberance 8d is positioned on the axial part of accommodation hole 8a radially.In this execution mode, with axially adjacent exterior periphery direction protuberance 8d each other, have three chips 11.
As shown in Figure 1, rotor core 8 in each radial inner end of accommodation hole 8a radially, has the 8e of internal limitations portion.The 8e of each internal limitations portion is from each radial inner end of accommodation hole 8a radially, towards radially accommodation hole 8a is inner, towards the outstanding inside protuberance of radially outer.The width dimensions of the 8e of each internal limitations portion is identical with the width dimensions of accommodation hole 8a radially.The 8e of each internal limitations portion, restriction radial magnet 9 moves towards inner radial.
As shown in Figure 3, the 8e of each internal limitations portion is positioned on the axial part of accommodation hole 8a radially.In this execution mode, between the axially adjacent 8e of internal limitations portion, there are three chips 11.
As shown in Figure 1, the first inclination accommodation hole 81 and the second inclination accommodation hole, 82 each radial outer ends all have the V hole external void 8g that does not dispose the first inclination magnet 71 and the second inclination magnet 72.The width dimensions of each V hole external void 8g forms with the width dimensions of the first inclination magnet 71 and the second inclination magnet 72 roughly the samely.Rotor core 8, each radial outer end at the first inclination accommodation hole 81 and the second inclination accommodation hole 82 has V hole protuberance 8h.Each V hole protuberance 8h, it is positioned at than V hole external void 8g and more leans on inner radial.Each V hole protuberance 8h, towards each inside of the first inclination accommodation hole 81 and the second inclination accommodation hole 82, outstanding respectively towards circumferencial direction.That is to say, between the first inclination magnet 71 and V hole external void 8g, because of protuberance 8 centres, V hole attenuate.Between the second inclination magnet 72 and the V hole external void 8g, also attenuate because of protuberance 8h centre, another V hole.V hole protuberance 8h limits the first inclination magnet 71 and the second inclination magnet 72 at radially outer, and promptly V hole external void 8g moves.A pair of V hole protuberance 8h distinguishes only with outstanding with same in the other direction amount along circumferencial direction.
Shown in Figure 1A, each is accommodation hole 8a radially, is divided and is formed by a pair of radially accommodation hole side 8p that extends in approximate radial.In the first inclination accommodation hole 81 and the second inclination accommodation hole 82 radial inner end separately, has opposite face SX.Each opposite face SX facing to accommodation hole side 8p radially, and accommodation hole side 8p radially, approximately extends abreast.At it and radially between the accommodation hole 8a, there is internal bridge 8i in each opposite face SX.The width dimensions of each internal bridge 8i radially is changeless.The first inclination accommodation hole 81 and the second inclination accommodation hole 82 radial inner end separately all have triangle space 8j.Each triangle space 8j is to be the leg-of-mutton portion that extends substantially from axially seeing, its result forms each opposite face SX.
As shown in Figure 1, rotor core 8 has bridge 8m between the outside bridge 8k of P/2 wide cut, a P V hole outside bridge 8w and P/2 angling hole.The outside bridge 8k of each wide cut is the bridge portion that lays respectively between wide hole 8c and the rotor outer peripheral face 8r.Rotor outer peripheral face 8r is the outer peripheral face of rotor core 8.The outside bridge 8w in each V hole is the bridge portion that lays respectively between V hole external void 8g and the rotor outer peripheral face 8r.Bridge 8m between each angling hole is between the radial outer end of the radial outer end of the first inclination accommodation hole 81 and the second inclination accommodation hole 82, the bridge portion that links to each other with the outside bridge 8w in a pair of V hole.
As shown in Figure 2, every chip 11 all has a short hole 11a and three slotted hole 11b.That is to say that in every chip 11, the number of slotted hole 11b is obtained through the number that deducts short hole 11a from P/2.Short hole 11a and slotted hole 11b are through many chips 11 range upon range of formations accommodation hole 8a radially.That is to say that short hole 11a and slotted hole 11b are respectively as the prestack of range upon range of radially accommodation hole before accommodation hole radially.That is to say that every chip 11 all has radially accommodation hole of P/2 prestack.
In addition, every chip 11 all has four first prestack inclination accommodation holes 61 and four second prestack inclination accommodation holes 62.Range upon range of through the first prestack inclination accommodation hole 61 constitutes the first inclination accommodation hole 81.Range upon range of through the second prestack inclination accommodation hole 62 constitutes the second inclination accommodation hole 82.The pair of holes that the first prestack inclination accommodation hole 61 and the second prestack inclination accommodation hole 62 are formed constitutes prestack V word accommodation hole.That is to say that every chip 11 has P/2, and four prestack V word accommodation holes are promptly arranged.Prestack V word accommodation hole is the prestack V word accommodation hole by many range upon range of V of formation word accommodation hole 8b.
Each chip 11 is divided into inner loop 11s and external rings 11t.Inner loop 11s is positioned at, and leans on inner radial more than short hole 11a, slotted hole 11b, the first prestack inclination accommodation hole 61 and the second prestack inclination accommodation hole 62, and external rings 11t is positioned at radially outer.Bridge 8m between each internal bridge 8i and angling hole links to each other inner loop 11s with external rings 11t.Inner loop 11s and external rings 11t account in chip 11 respectively greatly.
The radial inner end of short hole 11a constitutes the internal limitations 8e of portion.Slotted hole 11b more leans on inner radial to extend than short hole 11a.As shown in Figure 2, the radial inner end of short hole 11a and the distance between the rotor axis 13, be called the first radius distance R1.The distance between the radial inner end of slotted hole 11b and the rotor axis 13, be called the second radius distance R2.The first inclination accommodation hole, 81 radial inner end, and the distance between the rotor axis 13, the 3rd radius distance R3 be called.In this execution mode, the 3rd radius distance R3 equates with the radial inner end of the second inclination accommodation hole 82 and the distance between the rotor axis 13.
The first radius distance R1 is than the big (R2＜R1) of the second radius distance R2.In this execution mode, the first radius distance R1 sets the big (R3＜R1) than the 3rd radius distance R3 for.The second radius distance R2, set for below the 3rd radius distance R3 (R2≤R3).In this execution mode, the second radius distance R2 sets for identical substantially with the 3rd radius distance R3.
In the first embodiment, in each chip 11, exterior periphery direction protuberance 8d only is positioned at short hole 11a.
Shown in Figure 1A,, be called opposite face size SW along the size of the opposite face SX of accommodation hole side 8p radially.Each opposite face SX, the size with short hole 11a counterpart is called overlapping dimension R.Overlapping dimension R sets the relation that can satisfy 0＜R≤SW/2 for.In this execution mode, set overlapping dimension R=SW/2.In this execution mode, opposite face size SW=2mm, overlapping dimension R=1mm.
First execution mode has the following advantages:
(1) as shown in figures 1 and 3, on the axial part of accommodation hole 8a radially, dispose short hole 11a, i.e. the 8e of internal limitations portion.The 8e of internal limitations portion, restriction radial magnet 9 moves towards inner radial.In accommodation hole 8a radially, there is the part of slotted hole 11b, because are spaces, so magnetic resistance increases with respect to radial magnet 9.That is to say, slotted hole 11b, from radial magnet 9 away from magnetic circuit.Its result can reduce the magnetic leakage flux of imbedding the magnet type motor.Thereby, keep the effective flux of imbedding the magnet type motor easily, realize high moment of torsionization.
For example, in the document of background technology, the radial inner end of each radial magnet is all by the radially radial inner end wall of accommodation hole, seamlessly encirclement.Its result divides the radial inner end of accommodation hole radially and the part of the rotor core that forms, constitutes the little magnetic circuit of magnetic resistance, can produce magnetic leakage flux.In this execution mode, with solving such problem.
(2) as shown in Figure 2, every chip 11 all has only a short hole 11a.Lack hole 11a, reduce the magnetic resistance of chip 11.This execution mode all has the situation of many short hole 11a to compare with each chip 11, can reduce magnetic leakage flux.That is to say, can be increased to maximum to the magnetic resistance of rotor core 8 on the whole.
(3) as shown in Figure 2, the second radius distance R2, be set in below the 3rd radius distance R3 (R2≤R3).That is to say that the distance between the radial inner end of slotted hole 11b and the rotor axis 13 is set in below the distance between the radial inner end of the rotor axis 13 and the first inclination accommodation hole 81.Therefore, as the internal bridge 8i of magnetic circuit, attenuate with the part of dividing by slotted hole 11b at least.Thereby, can positively reduce magnetic leakage flux.
(4) as shown in Figure 2, the first radius distance R1 sets the also big (R3＜R1) than the 3rd radius distance R3 for.That is to say that with the radial inner end of short hole 11a, promptly the distance between the radial inner end of radial magnet 9 and the rotor axis 13 is set for bigger than the distance between the radial inner end of the rotor axis 13 and the first inclination accommodation hole 81.After the first inclination magnet 71 and the second inclination magnet 72, magnetize under the situation of radial magnet 9, have following advantage.That is to say, be difficult to make be contained in the radially magnetic material of accommodation hole 8a, be subjected to the influence of the first inclination magnet 71 and the second inclination magnet 72, thus be easy to the magnetization and magnetizable get fine.Thereby, can reduce the waste of radial magnet 9.This advantage can obtain confirming from following experiment.That is to say; Under the first radius distance R1 and the 3rd radius distance R3 situation about equally, after the first inclination magnet 71 and the second inclination magnet 72, magnetize again under the situation of radial magnet 9, in the radial inner end of radial magnet 9; It is bad to tend to that magnetization takes place, i.e. the phenomenon of magnet waste.In order to address this problem, set R3＜R1.
(5) shown in Figure 1A, each radial inner end of the first inclination accommodation hole 81 and the second inclination accommodation hole 82 all has opposite face SX.Thereby the width dimensions of each internal bridge 8i is being changeless on the direction of diameter.Thereby, can make internal bridge 8i, promptly the width dimensions of magnetic circuit radially attenuates equably, just can further reduce magnetic leakage flux.
(6) Fig. 4 representes the experimental result that concerns between the radial inner end magnetic susceptibility of overlapping dimension R with respect to the ratio of opposite face size SW and radial magnet 9.Magnetic susceptibility is according to R=0, R=SW/4, and R=SW/2, the order of R=3SW/4 and R=SW reduces successively.That is to say that magnetic susceptibility reduces along with the increase of overlapping ratio R/SW.Hence one can see that, and the situation of 0＜R≤SW/2 is bigger than the situation magnetic susceptibility of SW/2＜R≤SW.Thereby first execution mode should satisfy the relation of 0＜R≤SW/2, so be set at R=SW/2.Thereby, can obtain good magnetic susceptibility, also can significantly reduce the waste of radial magnet 9.
(7) chip 11 as shown in Figure 2 is to carry out range upon range of with every 360 °/(P/2) the mode that staggers in a circumferential direction.In this execution mode, range upon range of through letting chip 11 whenever once carry out at a distance from 90 ° of commentaries on classics, form rotor core 8.Therefore, rotary chip 11 and to carry out range upon range of action be changeless is so can be easy to make.That is to say that the range upon range of operation of chip 11 can be easy to realize automation.
As shown in Figure 3, through chip 11 is every at a distance from the certain angles dislocation, carry out simultaneously many range upon range of, short hole 11a, i.e. the 8e of internal limitations portion can be configured on the axial location in accommodation hole 8a radially at regular intervals.In this execution mode, with the axially adjacent 8e of internal limitations portion each other, have three chips 11.Thereby many 8e of internal limitations portion are present in to periodicity axially.Many the 8e of internal limitations portion can balance support radial magnet 9 well.Because axially have the equal angles 8e of internal limitations portion at interval, can be axially at regular intervals, zero deflection ground restriction radial magnet 9 moves towards inner radial.
What Fig. 5～Fig. 8 represented second embodiment of the invention imbeds the magnet type motor.
As shown in Figure 5, the rotor core 8 of second execution mode replaces exterior periphery direction protuberance 8d, has P/2 inner protuberance 8n.Each inner protuberance 8n, respectively from the radial outer end of accommodation hole 8a radially, outstanding towards inner radial.The width dimensions of radial magnet 9, be called the first width dimensions W1.The width dimensions of wide hole 8c, be called the second width dimensions W2.The width dimensions of inner protuberance 8n, be called the 3rd width dimensions W3.
W3＜W1＜W2。
That is to say, the width dimensions of each inner protuberance 8n, specific diameter is little to the width dimensions of magnet 9.Each inner protuberance 8n lays respectively at the pars intermedia of wide hole 8c circumferencial direction.Each inner protuberance 8n, restriction radial magnet 9 moves towards radially outer.
As shown in Figure 6, the chip 11 in this execution mode only has inner protuberance 8n in short hole 11a.The chip 11 of Fig. 6, around rotor axis 13, by 360 ° of every rotations/(P/2), promptly every half-twist the time, carry out many range upon range of.Its result produces rotor core 8.The radial dimension of the radial magnet 9 of Fig. 5 can be bigger than the radial dimension of the radial magnet 9 of Fig. 1.Because in Fig. 5, there is not exterior periphery direction protuberance 8d.
Radial dimension from radial magnet 9, deduct and the internal bridge 8i subtend resulting size of radial dimension partly, be called the exposure size of radial magnet 9.That is to say, the exposure size of radial magnet 9, the flux flow of expression radial magnet 9 is gone into effluent face, goes into the relative size of effluent face with the first inclination magnet 71 and the second inclination magnet, 72 each flux flows.The flux flow of radial magnet 9 is gone into effluent face, is the face that is connected with accommodation hole side 8p radially.The flux flow of the first inclination magnet 71 is gone into effluent face, is the face that extends along the first inclination magnet 71.Under the situation of Fig. 5, the exposure size of radial magnet 9 is set in 4.75mm.Under the situation of Fig. 1, the radial dimension of establishing exterior periphery direction protuberance 8d is 0.5mm, and the exposure size of radial magnet 9 is exactly 4.25mm.That is to say, the exposure size of the radial magnet 9 of Fig. 1, littler than the exposure size of the radial magnet 9 of Fig. 5, its size is exactly the radial dimension of exterior periphery direction protuberance 8d.
Its result, according to using the onesize electric current result that experimentizes, the generation moment of torsion of imbedding the magnet type motor of Fig. 5, the generation moment of torsion of imbedding the magnet type motor than Fig. 1 is high by 4%.Simultaneously, the teeth groove moment of imbedding the magnet type motor (Cogging Torque) of Fig. 5 all also hangs down 27% than the teeth groove moment of imbedding the magnet type motor of Fig. 1.Simultaneously, the torque ripple of imbedding the magnet type motor of Fig. 5 (torque ripple) is than the torque ripple of imbedding the magnet type motor of Fig. 1 all also low 7%.
Second execution mode has the following advantages:
(8) each inner protuberance 8n lays respectively at the pars intermedia of each wide hole 8c circumferencial direction.The radial dimension of inner protuberance 8n is set for identical with the radial dimension of wide hole 8c.Thereby the radial position that inner protuberance 8n is most advanced and sophisticated conforms to the radial position of wide hole 8c radial inner end.For example, the exterior periphery direction protuberance 8d of Fig. 1 is because towards radially giving prominence in the accommodation hole 8a, so hinder radial magnet 9 extending towards wide hole 8c the most nearby.But, the inside protuberance 8n of Fig. 5 because only be present within the wide hole 8c, so allow radial magnet 9 extend to wide hole 8c the most nearby.Thereby Fig. 5 imbeds the magnet type motor, than Fig. 1 imbed the magnet type motor, raise the efficiency more easily.
(9) as shown in Figure 7, the width dimensions of the inside protuberance 8n of this execution mode is set in about 1/3 place of radial magnet 9 width dimensions.That is to say that the width dimensions of inner protuberance 8n is set in below 1/2 of radial magnet 9 width dimensions.For example, the pair of outer circumferencial direction protuberance 8d of Fig. 1 makes that radially the width dimensions of accommodation hole 8a narrows down.That is to say,, just can produce magnetic leakage flux because thin in the middle of radially accommodation hole 8a makes.This is because pair of outer circumferencial direction protuberance 8d, though leave mutually, all extends from accommodation hole side 8p radially respectively, has dwindled radially the accommodation hole side 8p cause in gap each other.
But the width dimensions of the inner protuberance 8n of Fig. 5 sets for from accommodation hole side 8p radially and leave, and specific diameter is also little to the width dimensions of magnet 9.Thereby, the inside protuberance 8n of Fig. 5, the very difficult magnetic circuit that constitutes magnetic leakage flux is easy to make magnetic leakage flux to reduce.Therefore, Fig. 5 imbeds the magnet type motor, than Fig. 1 imbed the magnet type motor, more further raise the efficiency easily.
(10) inner protuberance 8n is in the radially axial part formation of accommodation hole 8a.That is to say that inner protuberance 8n forms in rotor core 8 axial parts.With axially adjacent inside protuberance 8n each other, have three chips 11.Thereby, and compare in whole situation of axially all extending such as inner protuberance 8n, can strengthen the radially magnetic resistance of accommodation hole 8a integral body.Thereby, can reduce magnetic leakage flux.That is to say that the situation that inner protuberance 8n magnetic resistance is reduced is suppressed.
(11) as shown in Figure 6, every chip 11 all has with the short hole 11a of inner protuberance 8n with not with the slotted hole 11b of inner protuberance 8n.As will more than 11 of chip range upon range of, just be easy to process rotor core 8, make inner protuberance 8n only be positioned on the axial part of rotor core 8.
(12) inner protuberance 8n only is positioned at short hole 11a in every chip 11.That is to say that the pair of holes that 8e of internal limitations portion and inner protuberance 8n form all is positioned at short hole 11a in chip 11.Thereby the pair of holes that 8e of internal limitations portion and inner protuberance 8n form radially all is being positioned at identical axial location among the accommodation hole 8a.Thereby radial magnet 9 is towards moving of radially outer and inner radial, identical axially being restricted.Thereby it is supported well that radial magnet 9 is able to balance.
Fig. 9 and Figure 10 represent the 3rd execution mode.
Figure 11～Figure 13 representes the 4th execution mode of the present invention.
Shown in figure 13, at each radial outer end of accommodation hole 8a radially, there are wide hole 8c and pair of outer circumferencial direction protuberance 8d.With axially adjacent circumferencial direction protuberance 8d each other, have three chips 11.
Shown in figure 11, rotor core 8 radially in the accommodation hole 8a, all has internal circumference direction protuberance 8u at each.Each internal circumference direction protuberance 8u, its position all leaves what a bit from the radial inner end of accommodation hole 8a radially.In this execution mode, will be from the overhang of the internal circumference direction protuberance 8u of accommodation hole side 8p radially, set specific diameter for and also want big to half of accommodation hole 8a width dimensions.Its result, each internal circumference direction protuberance 8u just can limit radial magnet 9 and move towards inner radial.
Each internal circumference direction protuberance 8u only is arranged in the utmost point of a pair of radially accommodation hole side 8p.Under the situation of Figure 11, internal circumference direction protuberance 8u, only, outstanding towards circumferencial direction from being rotated counterclockwise the radially accommodation hole side 8p of direction, to be located at radially in the accommodation hole 8a.Each internal circumference direction protuberance 8u is positioned on the axial part of accommodation hole 8a radially.Shown in figure 13, with axially adjacent internal circumference direction protuberance 8u each other, have three chips 11.
Shown in figure 12, every chip 11 all has P/2 i.e. four slotted hole 11b.The radial dimension of each slotted hole 11b, specific diameter wants big to the radial dimension of magnet 9.In this execution mode, every chip 11 only in a slotted hole 11b, has internal circumference direction protuberance 8u and pair of outer circumferencial direction protuberance 8d.That is to say, in this execution mode, in three slotted hole 11b of every chip 11, neither form internal circumference direction protuberance 8u, also do not form exterior periphery direction protuberance 8d.Distance between rotor axis 13 and the internal circumference direction protuberance 8u is called the first radius distance R1.
The 4th execution mode has the following advantages:
(13) shown in figure 13, internal circumference direction protuberance 8u is configured on the axial part of accommodation hole 8a radially.Internal circumference direction protuberance 8u, restriction radial magnet 9 moves towards inner radial.The radial dimension of accommodation hole 8a radially, specific diameter wants big to the radial dimension of magnet 9.The radial inner end of accommodation hole 8a radially because of there being internal circumference direction protuberance 8u, and is left radial magnet 9.That is to say that magnetic circuit is away from radial magnet 9.Thereby in the radially magnetic resistance increase of accommodation hole 8a radial inner end, magnetic leakage flux reduces.
Like Figure 11 and shown in Figure 13, each internal circumference direction protuberance 8u only is arranged in one side of a pair of radially accommodation hole side 8p.Thereby for example, the situation that internal circumference direction protuberance 8u all is set with two sides at a pair of radially accommodation hole side 8p is compared, and easier with the punching operation of the chip 11 of Figure 11～Figure 13, it is easier to make.
(14) shown in figure 12, every chip 11 only has an internal circumference direction protuberance 8u.Thereby, for example, all there is the situation of a plurality of internal circumference direction protuberance 8u to compare with every chip 11, can strengthen the magnetic resistance of rotor core 8 integral body, reduce magnetic leakage flux.
(15) second radius distance R2 are set in below the 3rd radius distance R3.In this execution mode, the second radius distance R2 is set in only than a little bit smaller point of the 3rd radius distance R3.Therefore, just attenuate, just can reduce magnetic leakage flux as the internal bridge 8i of magnetic circuit.
(16) first radius distance R1 set the big (R3＜R1) than the 3rd radius distance R3 for.Therefore, after the first inclination magnet 71 and the second inclination magnet 72, again magnet 9 is radially carried out under the magnetized situation, be difficult to receive the influence of the first inclination magnet 71 and the second inclination magnet 72, therefore magnetize easily and well.Thereby, can reduce the waste of radial magnet 9.
(17) chip 11 shown in figure 12 is at circumferencial direction, every squint 360 °/(P/2), promptly respectively squinting 90 ° cascades.Therefore, it is changeless that chip 11 is rotated range upon range of action, is easy to realize automation.Simultaneously, because a plurality of internal circumference direction protuberance 8u is axially existing at regular intervals, so but balance supports radial magnet 9 well.
Figure 14～Figure 16 representes the 5th execution mode of the present invention.
Figure 14 representes the rotor core 21 of the 5th execution mode.Like Figure 14 and shown in Figure 16, radially among the accommodation hole 21a,, all there is inner radial protuberance 22b on the two sides of a pair of radially accommodation hole side 8p at each.
Shown in figure 15, every chip 22 all has P/2 slotted hole 11b.In all slotted hole 11b, all dispose inner radial protuberance 22b.Inner radial protuberance 22b only is positioned at one side of slotted hole 11b circumferencial direction.In Figure 15, inner radial protuberance 22b only is positioned at the side that is rotated counterclockwise direction.A pair of separately exterior periphery direction protuberance 8d forms in all slotted hole 11b.
Through with Figure 15 chip 22, reverse in every table, carry out many range upon range of methods, form the rotor core 21 of Figure 14.Shown in figure 16, inner radial protuberance 22b, interconnected axially.
The 5th execution mode has the following advantages:
(18) inner radial protuberance 22b from every chip 11, replaces different radially accommodation hole side 8p each other and gives prominence to.Thereby the inner radial protuberance 22b of Figure 16 than the internal circumference direction protuberance 8u of Figure 13, can balance support radial magnet 9 better.
(19) inner radial protuberance 22b, each number with identical is configured on the radially accommodation hole side 8p in pairs.Thereby the balance of rotor core 21 self spin balancing etc. is good.Thereby, by the unbalance vibration that causes of rotor core 21 self, be minimized.
(20) with the overhang of each inner radial protuberance 22b, it is also little to half of the width dimensions of accommodation hole 21a to set specific diameter for.Thereby inner radial protuberance 22b contact each other is able to prevent.That is to say, can suppress rotor core 21 magnetic resistance and diminish.That is to say, can suppress magnetic circuit and shorten.
Figure 17 representes the chip 31 of the 6th execution mode.
Figure 18～Figure 20 representes the 7th execution mode of the present invention.
Each wide hole 8c runs through the whole axial of rotor core 8.At each wide hole 8c with radially between the radial outer end of accommodation hole 8a, dispose pair of outer circumferencial direction protuberance 8d.Exterior periphery direction protuberance 8d is positioned at the whole axial of rotor core 8.Identical with the overhang of each exterior periphery direction protuberance 8d.
Shown in figure 20, the internal bridge 8i of this execution mode is present on the axial part.With axially adjacent internal bridge 8i each other, have three chips 11.
Shown in figure 19, every chip 11 all has a separate wells 11c and three both sides' intercommunicating pore 11d.These separate wells 11c and both sides' intercommunicating pore 11d are four altogether, i.e. P/2 prestack accommodation hole radially.The radial inner end of each both sides' intercommunicating pore 11d, first prestack inclination accommodation hole 61 and the second prestack inclination accommodation hole 62 adjacent with circumferencial direction interconnect.Separate wells 11c is not communicated with the first prestack inclination accommodation hole 61 and the second prestack inclination accommodation hole 62 mutually.That is to say, between the separate wells 11c and the first prestack inclination accommodation hole 61, have internal bridge 8i.Between the separate wells 11c and the second prestack inclination accommodation hole 62, also there is internal bridge 8i.
The 7th execution mode has the following advantages:
(21) separate wells 11c is configured on the axial part of accommodation hole 8a radially.Its result, but restricted internal bridge 8i, the inner radial of the court's first inclination magnet 71 and the second inclination magnet 72 moves.Its result, the first inclination magnet 71 and the second inclination magnet 72 in the axial part of rotor core 8, are able to restriction towards inner radial mobile.That is to say, because between the inner of the part of the radially accommodation hole 8a corresponding and the first inclination magnet 71, do not have internal bridge 8i, so there is the space to exist with both sides' intercommunicating pore 11d.Between the part and the second inclination magnet, 72 radial inner end of the radially accommodation hole 8a corresponding, also there is the space with both sides' intercommunicating pore 11d.Thereby in the first inclination magnet 71 and the second inclination magnet, 72 each radial inner end, it is big that magnetic resistance becomes, and can reduce magnetic leakage flux.
Both sides' intercommunicating pore 11d and separate wells 11c are easy to make through punching processing chip 11.The punching processing of both sides' intercommunicating pore 11d and separate wells 11c, for example, the formation of also such than the 8e of internal limitations portion of Fig. 1 protuberance is easier.Internal bridge 8i with the inner loop 11s of chip 11, radially is connected on the external rings 11t.Thereby internal bridge 8i for example, compares with the 8e of internal limitations portion of Fig. 1, and on restriction first inclination magnet 71 and the second inclination magnet 72 direction that moves separately, even very thin, intensity is also big.Ability attenuate internal bridge 8i's is that part of, and the first inclination magnet 71 and the second inclination magnet 72 can be used for extending respectively.
(22) separate wells 11c forms one in every chip 11.Separate wells 11c than both sides' intercommunicating pore 11d, can reduce the magnetic resistance of rotor core 8.But, in this execution mode,,, can reduce magnetic leakage flux so can strengthen the magnetic resistance of rotor core 8 integral body because separate wells 11c is one in every chip 11.
(23) chip 11, along rotor axis 13, every change 360 °/(P/2), promptly change 90 °, carry out many range upon range of.Because the rotary operation of chip 11 and range upon range of operation all are changeless,, realize automation so can be easy to make rotor core 8.Separate wells 11c and internal bridge 8i along rotor axis 13, exist at regular intervals.In this execution mode, with axially adjacent separate wells 11c each other, have three chips 11.Thereby internal bridge 8i can limit the first inclination magnet 71 equably and the second inclination magnet 72 moves towards inner radial with respect to axial respectively.Thereby it is supported well that the first inclination magnet 71 and the second inclination magnet 72 all are able to balance separately.
(24) width dimensions of internal bridge 8i from axially seeing, all is changeless along radial direction.Thereby can all impartial the attenuating of internal bridge 8i be reduced magnetic leakage flux.
Be not communicated with mutually between (25) the first inclination accommodation holes 81 and the second inclination accommodation hole 82.That is to say, between the first inclination accommodation hole 81 and the second inclination accommodation hole 82, be formed with towards bridge 8m between the angling hole of radial direction extension.The outside bridge 8k of big width links to each other with bridge 8m between angling hole.Thereby the rotor core 8 of this execution mode for example, is compared with the situation that the second inclination accommodation hole 82 is communicated with the first inclination accommodation hole 81, and intensity improves, and can prevent distortion.
Particularly, before range upon range of under the state of each chip 11 monomers, for example, as with the occasion of the first prestack inclination accommodation hole 61 with the second prestack inclination accommodation hole is communicated with, the rigidity of chip 11 will reduce and be difficult to handle.The inner loop 11s of chip 11 only is connected on the external rings 11t by internal bridge 8i.But this execution mode, because bridge 8m is connected inner loop 11s between angling hole with external rings 11t, thereby the intensity of chip 11 is improved, and can prevent the distortion of chip 11, and handles easily.
Figure 21～Figure 23 A representes the 8th execution mode of the present invention.
Through the chip 11 of Figure 22, on rotor axis 13, every change 90 ° carry out many range upon range of, just make like Figure 21 and rotor core 8 shown in Figure 23.
The 8th execution mode has the following advantages:
(26) on axial at least a portion of accommodation hole 8a radially, dispose the first folk prescription intercommunicating pore 11e.Thereby, with the corresponding part of the first folk prescription intercommunicating pore 11e of accommodation hole 8a radially, and between the radial inner end of the first inclination magnet 71, be formed with the space.Thereby it is big that magnetic resistance becomes, and just can reduce magnetic leakage flux.Punching processing through chip 11 just can form the first folk prescription intercommunicating pore 11e, and for example, this formation with Fig. 1 internal limitations 8e of portion is compared, and just seems easy to manufacture.In addition, internal bridge 8i is because radially be connected inner loop 11s, so can increase the intensity of chip 11 with external rings 11t.Through attenuate internal bridge 8i, the first inclination magnet 71 and the second inclination magnet 72 can extend respectively.
In addition, the chip 11 of Figure 22 is not limited on rotor axis 13, rotating one by one carry out range upon range of, for example, also can be when every be changeed 90 °, reversing in again will every chip 11 showing, it is range upon range of to carry out.In the case, at the both direction of accommodation hole 8a circumferencial direction radially, rotor core 8 whole axially, it is impartial that the cross-sectional area of internal bridge 8i all becomes.
Figure 24～Figure 26 A representes the 9th execution mode.
Shown in figure 25, chip 11 has two first folk prescription intercommunicating pore 11e and two second folk prescription intercommunicating pore 11f.That is to say that chip 11 has radially accommodation hole of four prestacks altogether, is the folk prescription intercommunicating pore all.The second folk prescription intercommunicating pore 11f is not communicated with mutually each other with the first prestack inclination accommodation hole 61, and is communicated with the second prestack inclination accommodation hole 62.
The chip 11 of Figure 25, through on rotor axis 13, every change 90 ° carry out many range upon range of, and form the rotor core 8 of Figure 24 and Figure 26.
The 9th execution mode has the following advantages:
(27) radially in the accommodation hole 8a, dispose the first folk prescription intercommunicating pore 11e and the second folk prescription intercommunicating pore 11f at each.Its result, each internal bridge 8i limits the first inclination magnet 71 and the second inclination magnet 72 moves towards inner radial.
(28) all prestack accommodation hole radially all is the some of the first folk prescription intercommunicating pore 11e and the second folk prescription intercommunicating pore 11f.Thereby, for example, with prestack radially several of accommodation hole be exactly that the situation of separate wells 11c is compared, can increase the magnetic resistance of rotor core 8, reduce magnetic leakage flux.
Both sides' intercommunicating pore 11d, separate wells 11c, the first folk prescription intercommunicating pore 11e and second folk prescription intercommunicating pore 11f radial dimension separately, it is changeless being not limited to.Also can several prestacks radially accommodation hole be short hole 11a, all the other are slotted hole 11b.Short hole 11a, restriction radial magnet 9 moves towards inner radial.
Figure 27～Figure 29 A representes the tenth execution mode.
The chip 11 of Figure 28 along rotor axis 13, changes 90 ° through every, carry out many range upon range of.Its result makes like Figure 27 and rotor core 8 shown in Figure 29.
The tenth execution mode has the following advantages:
(29) on the axial part of accommodation hole 8a radially, dispose short hole, promptly short separate wells 11g.Short separate wells 11g forms the internal limitations 8e of portion.The 8e of internal limitations portion, restriction radial magnet 9 moves towards inner radial.In accommodation hole 8a radially, with slotted hole, i.e. the corresponding part of both sides' intercommunicating pore 11d between itself and radial magnet 9, exists the space.Thereby it is big that the magnetic resistance of rotor core 8 becomes, and can reduce magnetic leakage flux.
Figure 30～Figure 32 A representes the 11 execution mode.
Figure 31 chip 11, through on rotor axis 13, every change 90 ° carry out many range upon range of, and make the rotor core 8 of Figure 30 and Figure 32.
Therefore, the 11 execution mode had both had the advantage of Figure 21～Figure 23 A, had the advantage of Figure 27～Figure 29 A again.
In addition, also can be with the chip 11 of Figure 31, every reverse in all showing carry out range upon range of.In the case, at the both direction of accommodation hole 8a circumferencial direction radially, with respect to rotor core 8 whole axially, it is impartial that the cross-sectional area of internal bridge 8i all becomes.
Figure 33～Figure 35 A representes the 12 execution mode.
11 of Figure 34 chip, through along rotor axis 13, every change 90 ° carry out many range upon range of, promptly make the rotor core 8 of Figure 33 and Figure 35.
Therefore, the 12 execution mode had both had the advantage of Figure 24～Figure 26 A, had the advantage of Figure 27～Figure 29 A again.
Figure 36～Figure 38 A representes the 13 execution mode.
The chip 11 of Figure 37, through along rotor axis 13, every change 90 ° carry out many range upon range of, and process the rotor core 8 of Figure 36 and Figure 38.
The 13 execution mode has the following advantages:
(30) in the axial part of accommodation hole 8a radially, dispose the outstanding intercommunicating pore 11j that possesses restricting projection 11i.Restricting projection 11i separately when inner radial moves, forms the space at restriction radial magnet 9, the first inclination magnet 71 and the second inclination magnet 72 between the radial magnet 9 and the first inclination magnet 71.In addition, restricting projection 11i forms the space between the second inclination magnet 72 and radial magnet 9.That is to say that restricting projection 11i omits internal bridge 8i.Thereby it is big that rotor core 8 magnetic resistance become, and can reduce magnetic leakage flux.
(31) punching processing through chip 11 forms outstanding intercommunicating pore 11j, for example, compares towards the little protuberance that inner radial moves with the second inclination magnet 72 with formation restriction radial magnet 9, the first inclination magnet 71, makes and becomes easier.
(32) Figure 37 chip 11, have an outstanding intercommunicating pore 11j, and remaining prestack radially accommodation hole all is both sides' intercommunicating pore 11d.Thereby, for example, have the outstanding such situation of intercommunicating pore 11j more than two with chip 11, have the such situation of separate wells 11c with replacing both sides intercommunicating pore 11d and compare, can reduce magnetic leakage flux.
Figure 39～Figure 42 representes the 14 execution mode.
Shown in Figure 40 A, thick the sheet of chip 11, be called the thick T of chip.Shown in Figure 40 B,, be called big width radial dimension Y the radial dimension of wide hole 8c.Set for and satisfy Y≤4T, as satisfy Y=4T.The thick T=0.4mm that is set at of the chip of this execution mode, setting big width radial dimension is Y=1.6mm.
Shown in Figure 40 B, the circumferencial direction between the pair of outer circumferencial direction protuberance 8d at interval, be called the radially thin XC at interval in centre of accommodation hole 8a.
Shown in Figure 40 B, the radial dimension the outside bridge 8k of big width is called outside bridge size AB.The radial dimension of exterior periphery direction protuberance 8d, be called protuberance radial dimension W.
Shown in Figure 40 C, the radial dimension of the outside bridge 8w in V hole is also set outside bridge size AB for.
In this execution mode, outside bridge size is set AB=0.4mm for.That is to say that outside bridge size AB is set in equal values (AB=T) with the thick T of chip.
The circumferencial direction size of bridge 8m between angling hole, be called bridge size BB between angling hole.With bridge size BB between angling hole, set big (BB＞AB) for than outside bridge size AB.In this execution mode, set bridge size between angling hole for BB=0.6mm.
Shown in Figure 40 D,, be called internal bridge size CB the width dimensions of internal bridge 8i.With bridge size BB between angling hole, set big (BB＞CB) for than internal bridge size CB.This execution mode the internal bridge size is set at CB=0.4mm (AB=CB=T).
The 14 execution mode has the following advantages:
(33) wide hole 8c can increase the magnetic resistance in the accommodation hole 8a radial outer end radially, and magnetic circuit is broken away from radial magnet 9, reduces rotor core 8 magnetic leakage fluxes.
According to the experimental result of Figure 41, and setting Y≤4T (Y≤1.6mm).Thereby, needn't excessively strengthen the width radial dimension Y of wide hole 8c, just can guarantee the intensity of exterior periphery direction protuberance 8d.Thereby exterior periphery direction protuberance 8d can guarantee to move necessary intensity for restriction radial magnet 9 towards radially outer.That is to say, need the protuberance radial dimension W of exterior periphery direction protuberance 8d be reduced on the needed size, just can reduce the physique (size) of rotor 2.Wide hole 8c can effectively reduce magnetic leakage flux, reduces the physique of rotor 2.
Figure 41 representes the variation of big width radial dimension Y, and the physique of the needed rotor 2 of torque characteristics of acquisition certain value is than the experimental result of relation between (size ratio).According to experiment (result), the diameter of rotor 2, promptly the diameter of rotor core 8 is made as necessarily, is made as outside bridge size AB necessarily, is made as the radial position of the size of radial magnet 9 and radial magnet 9 necessarily.That is to say rotor physique ratio, the axial dimension ratio of expression rotor 2, the i.e. axial dimension of rotor core 8 ratio.The certain value of torque characteristics is set at the torque characteristics that does not have the situation of wide hole 8c lower rotor part core 8.For the various situation of the thin interval XC=0.4mm in centre, 0.8mm, 1.6mm, 2.4mm, measured to obtaining the necessary rotor physique ratio of certain value of torque characteristics.Shown in the explanation of the 14 execution mode, its result is AB=T=CB=0.4mm.
Shown in figure 41ly know that middle thin XC at interval increases more, the physique of rotor 2 is more little.Its reason is that middle thin XC at interval increases more, due to the magnetic leakage flux of rotor core 8 reduces more.According to Figure 41, no matter in the middle of thin XC at interval, big width radial dimension Y, from 0 to 4T (1.6mm), the physique of rotor 2 can both reduce.But even big width radial dimension is set in Y＞4T, 2 physique of rotor can not be littler than the situation of Y=4T.
Thereby, can know according to Figure 41, as set big width radial dimension Y＞4T that the intensity of rotor core 8 reduces lavishly.The protuberance radial dimension W of exterior periphery direction protuberance 8d also must diminish, and the intensity of exterior periphery direction protuberance 8d also can descend.
But, in this execution mode, be to set Y≤4T.Thereby, exterior periphery direction protuberance 8d intensity is reduced lavishly, and can dwindle the physique of rotor 2.For example, under the situation that externally intensity of circumferencial direction protuberance 8d is low, radial magnet 9 receives rotor 2 rotations to produce action of centrifugal force, can not damaged exterior periphery direction protuberance 8d.That is to say that radial magnet 9 has the possibility that moves towards radially outer.
But this execution mode can be guaranteed the intensity of exterior periphery direction protuberance 8d.Its result just can both make rotor 2 miniaturizations, can prevent the offset of radial magnet 9 again.That is to say that this execution mode can at length make the shape and size optimization of wide hole 8c.This execution mode is provided as the size of the required wide hole 8c of effective reduction magnetic leakage flux.Its result can realize the miniaturization of motor physique.
(34) set Y=4T (Y=1.6mm).Thereby, the intensity of exterior periphery direction protuberance 8d is reduced lavishly, and can make the physique minimum (with reference to Figure 41) of rotor 2.
(35) bridge size BB between outside bridge size AB and angling hole sets BB＞AB for.Can know by Figure 42 experimental result, this execution mode, same with the situation of setting BB=AB, can reduce magnetic leakage flux, reduce the physique of rotor 2.This execution mode for example, is compared with the situation of setting BB=AB, both can guarantee the intensity of bridge 8m between angling hole, can guarantee the intensity of rotor core 8 again.
Figure 42 representes under the situation that bridge size BB and internal bridge size CB change respectively between outside bridge size AB, angling hole, for obtaining the torque characteristics of certain value, the experimental result of necessary rotor 2 physique ratio.As fiducial value, under the situation of AB=BB=CB=0.4mm, set rotor physique than=1.Bridge size BB and internal bridge size CB between outside bridge size AB, angling hole are made as 0.6mm respectively, ask rotor physique ratio.Only working as outside bridge size AB is under the situation of 0.6mm, rotor physique ratio=about 1.09.Only bridge size BB is under the situation of 0.6mm when between the angling hole, rotor physique than=about 1.06.Only working as internal bridge size CB is under the situation of 0.6mm, rotor physique ratio=about 1.00.
Shown in figure 42, the rotor physique ratio under the situation of BB=0.6mm almost equates with 1.00.That is to say, when internal bridge size CB is under the situation of fixing, even if make bridge size BB between angling hole, than outside bridge size AB big (BB＞AB), rotor physique ratio, also almost constant with the situation of BB=AB.Thereby, the situation of BB＞AB, same with the situation of BB=AB, can reduce the physique of rotor 2.That is to say that the situation of BB＞AB than the situation of BB=AB, more can be guaranteed the intensity of bridge 8m between angling hole.That is to say,, just can keep torque characteristics, can improve the intensity of rotor core 8 again through setting bridge size BB between angling hole bigger than outside bridge size AB.
(36) bridge size BB between internal bridge size CB and angling hole sets BB＞CB for.Can know from Figure 42, the same with the situation of BB=CB, can reduce magnetic leakage flux, reduce the physique of rotor 2.And the situation of BB＞CB, also than the situation of BB=CB, more can improve the intensity of bridge 8m between angling hole.
Shown in figure 42ly know, when outside bridge size AB is under the situation of fixing, even bridge size BB between angling hole is set in the big 0.6mm than internal bridge size CB, its rotor physique ratio, it is big also can not become than the situation of BB=CB=0.4mm.Thereby, through with bridge size BB between angling hole, set greatlyyer than internal bridge size CB, can be same with the situation of BB=CB, reduce the physique of rotor 2.And, also can improve the intensity of bridge 8m between the ability angling hole, thereby improve the intensity of rotor core 8.
(37) outside bridge size AB is set at AB=T.Thereby in every chip 11, outside bridge 8k of big width and V hole outside bridge 8w section separately are set at square.Thereby this execution mode for example, is compared with the situation that is not AB=T, both can dwindle the magnetic leakage flux of outside bridge 8k of big width and the outside bridge 8w in V hole, can improve intensity again.
Figure 43～Figure 48 representes the 15 execution mode.
Shown in figure 43, imbed the magnet type motor, have the motor field frame 41 that holds stator 1.Motor field frame 41 has yoke 42 and end plate 43.Yoke 42 is tubulars that the end is arranged.End plate 43, plug closes the opening of yoke 42.Yoke 42 inner peripheral surfaces are fixed with stator 1.
In the bottom of yoke 42, dispose clutch shaft bearing 33.In the central authorities of end plate 43, dispose second bearing 34.The clutch shaft bearing 33 and second bearing 34, rotatably supporting revolving shaft 7.
Shown in figure 43, on end plate 43,, dispose porose IC51 by substrate 52.Hole IC51 is the axial magnetic leakage flux through detection rotor 2, comes the Magnetic Sensor of detection rotor 2 rotations.That is to say hole IC51, the position of rotation of detection rotor 2, the i.e. anglec of rotation.Hole IC51, face-to-face with the axial end 2a of rotor 2.Controller (diagram is omitted) according to the signal from hole IC51, produces best rotating magnetic field from stator 1, and its result just can carry out good Spin Control to rotor 2.
Like Figure 44 and shown in Figure 45, hole IC51 between the first inclination magnet 71 and the second inclination magnet 72, is configured in than connects with hole 18 and more leans on radially outer.Hole IC51 is configured in radially outer zone H in the rotor core 8.The both positive and negative polarity of the magnetic flux that in the H of radially outer zone, detects, in the one-period of rotor 2 rotations, only counter-rotating once.
The first inclination magnet 71 and the second inclination magnet, 72 aspectant sides, be called inclination magnet face 71a, 72a.From axially seeing, inclination magnet face 71a, 72a center separately are called central point MX.In this execution mode, radially outer zone H more is positioned at by radially outer than central point MX.That is to say that radially outer zone H is the zone between central point MX and the rotor outer peripheral face 8r.
Radially outer zone H between the first inclination magnet 71 and the second inclination magnet 72, when coil 6 is not had energising, means in rotor core 8, is the high zone of magnetic flux density.That is to say that radially outer zone H is the high magnetic flux density zone that motor does not have the rotor core 8 when switching on.Radially outer zone H is corresponding to the magnetic saturation zone (never giving illustrated experimental result can know) of rotor core 8.Being radially outer zone H, is the magnetic saturation zone in rotor core 8.
Figure 46～Figure 48 explanation is used to determine method for designing hole IC51 radial position, that imbed the magnet type motor.Method for designing comprises determination step S1 and positioning step S2.That is to say that method for designing is exactly to imbed the manufacturing approach of magnet type motor.
At first, determination step S1 is positioned to rotor 2 axial end 2a hole IC51 face-to-face.Change the radial position of hole IC51 on one side again, Yi Bian measure the magnetic flux characteristic of each radial position.Shown in figure 46, the position of first hole IC51a～octal IC51h, set inner peripheral surface 8v from rotor 2 for to rotor outer peripheral face 8r.Figure 47 represent the first hole IC51a～the 5th hole IC51e, the first magnetic flux density characteristic Za～the 5th magnetic flux density characteristic Ze is with respect to the anglec of rotation of rotor core 8.Figure 48 represent the 6th hole IC51f～octal IC51h, the 6th magnetic flux density characteristic Zf～the 8th magnetic flux density characteristic Zh.
Shown in figure 47, the first magnetic flux density characteristic Za～the 5th magnetic flux density characteristic Ze is between the one-period of magnetic flux change, repeatedly through magnetic flux density=0.That is to say, between the one-period of magnetic flux change, repeatedly carry out zero crossing (zero cross).That is to say, repeatedly carry out the positive and negative counter-rotating of magnetic flux density.The counter-rotating of magnetic flux both positive and negative polarity detects on extremely at each N utmost point of rotor 2 and S.The one-period of magnetic flux change, be exactly rotor 2 half-twists during, i.e. the first inclination magnet 71 and the second inclination magnet, 72 pair of magnet are during the IC51 of hole.That is to say, the one-period of magnetic flux change, be exactly between a pair of first inclination magnet 71 and the second inclination magnet 72 during.For example, the 4th magnetic flux density characteristic Zd from magnetic flux density=0, is increased to about after the 130mT, approximately reduces to 30mT.And after being increased to about 30mT, approximately reduce to 150mT, magnetic flux density=0 then.That is to say that the 4th magnetic flux density characteristic Zd between one-period, carries out zero crossing 3 times.
Shown in figure 48, the 6th magnetic flux density characteristic Zf～the 8th magnetic flux density characteristic Zh is between the one-period of magnetic flux change, for once through magnetic flux density=0.Promptly for once do zero crossing.That is to say that between the first inclination magnet 71 and the second inclination magnet 72, the both positive and negative polarity of the magnetic flux that is detected only reverses once in one-period.
In positioning step S2, according to the result of determination step S1, refer in particular to sizing to perimeter H, hole IC51 is positioned at radially outer zone H.Shown in figure 48, the both positive and negative polarity of magnetic flux is specified in the one-period of magnetic flux change only counter-rotating the 6th magnetic flux density characteristic Zf～the 8th magnetic flux density characteristic Zh once especially.Its result the radial position of the 6th hole IC51f～octal IC51h shown in figure 46, refers in particular to and is decided to be radially outer zone H.
Shown in figure 45, this execution mode is configured in hole IC51 on the position of the seven apertures in the human head IC51g corresponding with the 7th magnetic flux density characteristic Zg.Shown in figure 46, the first inclination magnet 71 and the second inclination magnet 72, link closest approach line each other, be called the narrowest line L.Seven apertures in the human head IC51g, be positioned at the narrowest line L near the inner radial place.
Shown in figure 45, connect with hole 18 and rivet 19, with respect to radially outer zone H, it is adjacent that configuration is formed in inner radial.In like Figure 45, represent middle circle MC with double dot dash line, this middle circle MC around rotor axis 13, the circle of the central point MX through the first inclination magnet 71 and the central point MX of the second inclination magnet 72.Connect with hole 18,, be configured in inner radial adjacent with respect to middle circle MC.Seven apertures in the human head IC51g and connecting with the distance between the hole 18, than the 6th hole IC51f greatly.
The 15 execution mode has the following advantages:
(38) hole IC51 is configured to the axial end 2a of rotor 2 face-to-face.Hole IC51 is configured in the H of radially outer zone.In the H of radially outer zone, between the first inclination magnet 71 and the second inclination magnet 72, by the both positive and negative polarity of the detected magnetic flux of hole IC51, in the one-period of magnetic flux change, only counter-rotating once.That is to say, detect magnetic flux density, in the one-period of magnetic flux change, only do zero crossing once.Thereby this execution mode does not use resolver (resolver) and sensor-magnet, with simply constituting, and the position of rotation of detection rotor 2 accurately just.
That is to say, this execution mode, without the resolver of complex structure and expensive just.In addition, this execution mode uses the radial magnet 9, the first inclination magnet 71 and the second inclination magnet 72 magnetic flux separately that constitute rotor 2 magnetic poles.Thereby sensor-magnet that need not be other just.Thereby this execution mode can reduce the parts number of packages, and can realize miniaturization, accomplishes simple in structure.That is to say that this execution mode neither needs the rotor sensor of resolver, also need sensor-magnet be positioned on the rotor accurately.
Shown in figure 46, the first hole IC51a～the 5th hole IC51e is configured in specific diameter more leans on place from inner radial to perimeter H.In the case; The first magnetic flux density characteristic Za shown in figure 47～the 5th magnetic flux density characteristic Ze is such; Hole IC51 is between the first inclination magnet 71 and the second inclination magnet 72; If the both positive and negative polarity of the detection magnetic flux of hole IC51, the counter-rotating secondary is above, and the utmost point that beyond the magnetic pole transition point of rotor 2, detects magnetic flux also can reverse.That is to say that under the situation of Figure 47, the detection of rotor 2 position of rotation is very difficult.But this execution mode shown in figure 48 can be avoided this problem.That is to say that this execution mode can detect the position of rotation of rotor 2 easily and accurately with simple structure.Thereby, can produce best rotating magnetic field to stator 1, rotor 2 is carried out good rotation drive controlling.
As comparative example, for example, use resolver to come to detect accurately the position of rotation of rotor sometimes.But the structure of resolver is very complicated and cost an arm and a leg.In addition, under the situation of resolver,, need carry out accurately and the rotor sensor of rotor one rotation location at circumferencial direction for high Precision Detection goes out the position of rotation (angle) of rotor.In addition, using and the sensor-magnet of rotor one rotation and the Magnetic Sensor of detecting sensor magnet magnetic flux, substitute under the situation of resolver, sensor-magnet is positioned at circumferencial direction needs precision very high.That is to say, the first inclination magnet 71 and the second inclination magnet 72 are shoulded be regarded as a different matter,, also have with the same problem existence of resolver even if under the situation of using sensor-magnet.This execution mode through hole IC51 being configured in radially outer zone H, detects the magnetic flux of the first inclination magnet 71 and the second inclination magnet 72, just need not use resolver and other sensor-magnet.
(39) radially outer zone H is to imbed the magnet type motor when not having energising, the high zone of magnetic flux density in the rotor core 8.That is to say that radially outer zone H is the magnetic saturation zone of rotor core 8.Connect with hole 18 and rivet 19,, be configured in inner radial adjacent with respect to radially outer zone H.
For example, in magnetic saturation zone, configuration connects with under the such situation of hole 18 and rivet 19, has to teeth groove moment and torque ripple and brings dysgenic danger.But the connection of this execution mode is disposed because avoiding radially outer zone H, so can avoid harmful effect with hole 18 and rivet 19.And, connect with hole 18 and rivet 19, be the radial inner end of disposed adjacent at radially outer zone H.So, connect with hole 18 and rivet 19, do one's utmost to be configured in radially outer, so can do one's utmost to improve the mechanical strength of rotor core 8.
(40) imbed the method for designing of magnet type motor, promptly manufacturing approach comprises determination step S1 and positioning step S2.Determination step S1, the rotation of axial magnetic leakage flux that can detection rotor 2 detects the hole IC51 of usefulness, is configured to the axial end 2a of rotor 2 face-to-face.Determination step S1 Yi Bian change hole IC51 radial position, measures the magnetic characteristic of the rotor 2 of every each radial position.Positioning step S2 according to the result of determination step S1, judges radially outer zone H, and hole IC51 is positioned at radially outer zone H.Both positive and negative polarity by the detected magnetic flux of Magnetic Sensor that is configured in radially outer zone H only reverses once in the one-period of magnetic flux.Thereby that can easily design and produce this execution mode imbeds the magnet type motor.
Above-mentioned execution mode also can change by the following stated.
In Fig. 2, each chip 11 has the number of short hole 11a, is not limited to only one, also can be more than two.Each chip 11 has the number of slotted hole 11b, can deduct the number of short hole 11a and tries to achieve from (P/2) is individual.
Also can be with a plurality of short hole 11a, promptly a plurality of internal limitations 8e of portion, with unequal interval, be configured in each radially among the accommodation hole 8a axially.
The second radius distance R2 is not limited to be set in below the 3rd radius distance R3, also can be set in also bigger than the 3rd radius distance R3.
The first radius distance R1 is not limited to set for also bigger than the 3rd radius distance R3, also can set below the 3rd radius distance R3.
In Figure 1A, be not limited to be set in R=SW/2 to overlapping dimension, also can set the relation that satisfies 0＜R≤SW/4 for.According to the experimental result of Fig. 4, under the situation of 0＜R≤SW/4, magnetic susceptibility is near maximum.Thereby, can further reduce the waste of radial magnet 9.
In Fig. 2, exterior periphery direction protuberance 8d only is not limited on every chip 11, to be formed in the short hole 11a, also can be formed in the slotted hole 11b.Can also be with exterior periphery direction protuberance 8d, be formed on all prestacks radially in the accommodation hole.That is to say that in Fig. 3, exterior periphery direction protuberance 8d is not limited to only be configured on the axial part of accommodation hole 8a radially, also can be configured in accommodation hole 8a radially whole axially on.
In Fig. 8, inner protuberance 8n only is not limited to form in the axial part of accommodation hole 8a radially, also can be in the radially whole axial formation of accommodation hole 8a.
In the chip 11 of Fig. 6, be not limited to only be configured in inner protuberance 8n in the short hole 11a, also can be configured in the slotted hole 11b.
The 3rd width dimensions W3 of the inside protuberance 8n of Fig. 7, be not limited to be set in radial magnet 9 the first width dimensions W1 about 1/3.The 3rd width dimensions W3 of the inside protuberance 8n of Fig. 7 is also can specific diameter little to the first width dimensions W1 of magnet 9.In order to suppress magnetic leakage flux via inner protuberance 8n, the 3rd width dimensions W3 of inner protuberance 8n, with the first width dimensions W1 that is set in radial magnet 9 below 1/2 for good.
In Figure 12, internal circumference direction protuberance 8u is not limited to only to be configured in the radially accommodation hole side 8p that is rotated counterclockwise direction with respect to accommodation hole 8a radially, also can be configured on the radially accommodation hole side 8p of dextrorotation veer.
In Figure 12, internal circumference direction protuberance 8u is not limited to only on chip 11, form one, also can form more than two.Internal circumference direction protuberance 8u, with rotor core 8 axially, be configured to good at regular intervals.In addition, with internal circumference direction protuberance 8u, at circumferencial direction; Under the situation that two prestacks radially form in the accommodation hole continuously, both can chip 11 is every at a distance from 180 ° of commentaries on classics once, carry out many range upon range of; In also can chip 11 being shown one by one the counter-rotating, carry out many range upon range of.In these cases, can make internal circumference direction protuberance 8u, axial at rotor core 8, exist at regular intervals.
In Figure 13, internal circumference direction protuberance 8u, also can by unequal arranged spaced rotor core 8 axially.
In Figure 19, separate wells 11c is not limited on chip 11, only form one, also can form more than two.The number of both sides' intercommunicating pore 11d that each chip 11 has can be individual from (P/2), deducts the number of separate wells 11c and try to achieve.Separate wells 11c, with at regular intervals, the axial arrangement in rotor core 8 is good.Because internal bridge 8i, in rotor core 8, be configured at regular intervals axial.
In the chip 11 of Figure 19, also can be altered to separate wells 11c and establish two continuously, and both sides' intercommunicating pore 11d establishes 2 continuously at circumferencial direction at circumferencial direction.Separate wells 11c and the both sides' intercommunicating pore 11d circumferencial direction between separately is 90 ° at interval.In the case, both can be with 180 ° of chip 11 revolutions, carry out once many range upon range of, counter-rotating in also can chip 11 being shown one by one, carry out many range upon range of.In these cases, separate wells 11c all be configured at regular intervals rotor core 8 axially on.
In addition, separate wells 11c and internal bridge 8i also can be by unequal intervals, be configured in the rotor core 8 axially on.
Figure 19 chip 11 in, prestack is accommodation hole radially, which of separate wells 11c and both sides' intercommunicating pore 11d do not limit is.Internal bridge 8i also can be formed on the axial part of rotor core 8.
The chip 11 of Figure 22, at each radially among the accommodation hole 8a, in axial at least a portion, also can the laminated configuration first folk prescription intercommunicating pore 11e.
In Figure 40 B, the big width radial dimension Y that is not limited to set wide hole 8c becomes the relation of Y=4T with the thick T of chip, also can set Y＜4T for, and for example, Y=2T promptly equals 0.8mm.
In Figure 40 B～Figure 40 D, bridge size BB and internal bridge size CB are not limited to be set at BB=0.6mm and AB=CB=0.4mm between outside bridge size AB, angling hole.That is to say, be not limited to be set at BB＞AB=CB.For example, also can be set at AB=BB=CB, i.e. 0.4mm.But each is different if make outside bridge size AB and internal bridge size CB, can know that from Figure 42 in order to satisfy big size value, the physique of rotor 2 will become greatly, so be good to set AB=BB.
In Figure 39 and Figure 44, wide hole 8c and exterior periphery direction protuberance 8d are not limited to form in rotor core 8 axial integral body, also can only form in rotor core 8 axial parts.For example, also can form wide hole 8c and exterior periphery direction protuberance 8d at rotor core 8 axial both ends with on per ten chips 11.In addition, in Figure 44, also can delete wide hole 8c.Also can radial magnet 9 be extended to the radially radial outer end of accommodation hole.
In Figure 39, exterior periphery direction protuberance 8d, being not limited to from the circumferencial direction both sides of accommodation hole 8a radially all is same overhang, also can be only one-sided outstanding from accommodation hole 8a circumferencial direction radially.In addition, also can be pair of outer circumferencial direction protuberance 8d, from the circumferencial direction two side-prominent overhangs that have nothing in common with each other.
In Figure 46, hole IC51 is not limited to only dispose as seven apertures in the human head IC51g, also can be altered to as the 6th hole IC51f and octal IC51h and disposes.The 6th hole IC51f is with respect to middle circle MC, adjacent with radially outer.That is to say that the 6th hole IC51f with respect to connecting with hole 18 and rivet 19, is positioned near radially outer.Distance between the 6th hole IC51f and the narrowest line L is bigger than seven apertures in the human head IC51g.Octal IC51h is adjacent with radially outer with respect to the narrowest line L.
Shown in figure 48, in the middle of the 6th magnetic flux density characteristic Zf～the 8th magnetic flux density characteristic Zh, near magnetic flux density=0, the gradient steepest be the 8th magnetic flux density characteristic Zh.That is to say that octal IC51h can clearly distinguish the variation of magnetic pole, is suitable for the detection of rotor 2 position of rotation most.Octal IC51h is configured in rotor 2 and leans on radially outer most.For this reason, the 8th magnetic flux density characteristic Zh is near the counter-rotating of the both positive and negative polarity of magnetic flux, bigger than the gradient of the 6th magnetic flux density characteristic Zf and the 7th magnetic flux density characteristic Zg.
In Figure 45, connect with hole 18 and rivet 19, do not limit with respect to radially outer zone H, adjacent with inner radial.Rivet 19 also can change to other such coupling components of bolt and nut.Rotor core 8 is not limited to make through stacked die 11.For example, also can make rotor core 8 through the sintering magnetic powder.That is to say that rotor core 8 can be the sintering core, the sintering core then need not connect with hole 18 and rivet 19.
Determination step S1 is not limited to measure the first magnetic flux density characteristic Za～the 8th magnetic flux density characteristic Zh of first hole IC51a～octal IC51h.Also can decide radially outer zone H according to the central point MX of the first inclination magnet 71 and the second inclination magnet 72.
In Fig. 1, be not limited to form V hole external void 8g.Also can be with the radial outer end of the first inclination accommodation hole 81, bump with the first inclination magnet 71 and to connect.Can also be with the radial outer end of the second inclination accommodation hole 82, bump with the second inclination magnet 72 and to connect.
In Fig. 1, be not limited to the first inclination accommodation hole 81 and the second inclination accommodation hole 82 is not communicated with mutually, also can be to interconnect.That is to say that the pair of holes that the first inclination accommodation hole 81 and the second inclination accommodation hole 82 are formed is not limited to only independently of one anotherly, also can constitute a hole through interconnecting at the radial outer end of V word accommodation hole 8b.
In Figure 1A, the width dimensions of each internal bridge 8i is not limited to radially immobilize, and also can be radially to change.For example, in Figure 1A, can delete triangle space 8j.
The chip 11 of Fig. 2 is not limited to around rotor axis 13 Zhang Xuanzhuan and range upon range ofly, each is opened all misplace at circumferencial direction.Also can rotary chip 11, with many group covers, carry out range upon range of to every cover.In the case, because can reduce the number of revolutions of chip 11, so easy to manufacture.
Constitute the chip 11 of rotor core 8, it only is a kind of being not limited to, and also can be multiple.For example, the short hole 11a number of each chip 11, different.
In Fig. 1, the first inclination magnet 71 and the second inclination magnet 72, being not limited to all is respectively approximate rectangular shape, also can be respectively crooked circular shape, width dimensions can not fixed yet.
That is to say that V word accommodation hole 8b both can be each straight line bending separately that constitutes the V word, also can be that the width dimensions of each straight line of V word accommodation hole 8b is not fixed.
The radial magnet 9 of Fig. 1, the first inclination magnet 71, the second inclination magnet 72 and rotor core 8, being not limited to is the whole thing that extends in rotor core 8 entire axial length.Also can be with radial magnet 9, the first inclination magnet 71, the second inclination magnet 72 and rotor core 8, each is comfortable axially separately.These barrier also can stagger at circumferencial direction respectively, carry out range upon range of in rotor axis 13 directions.In the case, can further reduce teeth groove moment and the torque ripple of imbedding the magnet type motor.This is the variation of flowing owing to the rapid magnetic flux between stator 1 and rotor 2, the cause that can further reduce.
Also can the number and the number of magnetic poles P of the tooth 4 of Fig. 1 be changed to other number respectively.That is to say, also can the quantity of radial magnet 9, the first inclination magnet 71 and the second inclination magnet 72 be changed to other quantity except that four respectively.
Claims (10)
1. imbed the magnet type motor for one kind, have rotor (2), the axis of this rotor is called as rotor axis (13), it is characterized in that:
Above-mentioned rotor (2) has rotor core (8), a P/2 radial magnet (9), P/2 first an inclination magnet (71) and P/2 the second inclination magnet (72);
Above-mentioned rotor core (8); Have P/2 radially accommodation hole (8a), P/2 first an inclination accommodation hole (81) and P/2 the second inclination accommodation hole (82), above-mentioned radially accommodation hole (8a), the above-mentioned first inclination accommodation hole (81) and the above-mentioned second inclination accommodation hole (82) are axially running through above-mentioned rotor core (8) respectively;
Each above-mentioned radially accommodation hole (8a), towards roughly radially extending of above-mentioned rotor core (8), above-mentioned first inclination accommodation hole (81) and the above-mentioned second inclination accommodation hole (82), respectively with the mode with respect to above-mentioned radially accommodation hole (8a) inclination, the shape that is in line extends;
The pair of holes that above-mentioned first inclination accommodation hole (81) and the above-mentioned second inclination accommodation hole (82) are formed, the V word accommodation hole (8b) of formation V font, above-mentioned V font; Radially outer at above-mentioned rotor core (8) is convex; Above-mentioned radially accommodation hole (8a) and above-mentioned V word accommodation hole (8b), in the circumferencial direction configuration alternate with each other of above-mentioned rotor core (8), each above-mentioned radially accommodation hole (8a) is holding above-mentioned radial magnet (9) respectively; Each above-mentioned first inclination accommodation hole (81); Holding the above-mentioned first inclination magnet (71) respectively, each above-mentioned second inclination accommodation hole (82) is holding the above-mentioned second inclination magnet (72) respectively;
Each above-mentioned radial magnet (9) is positioned between above-mentioned first inclination magnet (71) and the above-mentioned second inclination magnet (72);
At circumferencial direction adjacent above-mentioned radial magnet (9) and the above-mentioned first inclination magnet (71); Constitute the N utmost point and the S utmost point in extremely, adjacent to above-mentioned radial magnet (9) and each above-mentioned second inclination magnet (72) of circumferencial direction, the formation N utmost point and S another utmost point in extremely; Its result; Constitute P/2 the N utmost point and P/2 the S utmost point, that is to say, the number of magnetic poles of above-mentioned rotor is P;
Above-mentioned rotor core (8), by many chips (11) above-mentioned axially range upon range of and form each said chip (11); Have P/2 prestack radially accommodation hole (11a, 11b), each above-mentioned prestack is accommodation hole (11a radially; 11b), be distributed in the circumferencial direction of said chip (11), through each above-mentioned prestack accommodation hole (11a radially; 11b) range upon range of forms above-mentioned radially accommodation hole (8a);
Above-mentioned prestack radially accommodation hole (11a, 11b) in, having several is short holes (11a), other are slotted hole (11b);
Distance between the radial inner end in above-mentioned short hole (11a) and the above-mentioned rotor axis (13) is called the first radius distance R1;
Distance between the radial inner end of above-mentioned slotted hole (11b) and the above-mentioned rotor axis (13) is called the second radius distance R2, sets R2＜R1;
Above-mentioned short hole (11a) is positioned on the axial part in each above-mentioned radially accommodation hole (8a), its result, and the above-mentioned radial inner end in above-mentioned short hole (11a) limits above-mentioned radial magnet (9) and moves towards inner radial.
According to claim 1 record imbed the magnet type motor, it is characterized in that:
Each said chip (11) has only an above-mentioned short hole (11a).
According to claim 1 record imbed the magnet type motor, it is characterized in that:
As the radial inner end of the above-mentioned first inclination accommodation hole (81) and the distance between the above-mentioned rotor axis (13) are called the 3rd radius distance R3, then set R2≤R3.
According to any one record of claim 1～3 imbed the magnet type motor, it is characterized in that:
As with the radial inner end of the above-mentioned first inclination accommodation hole (81) and the distance between the above-mentioned rotor axis (13), be called the 3rd radius distance R3, then set R3＜R1.
According to claim 4 record imbed the magnet type motor, it is characterized in that:
Each above-mentioned radially accommodation hole (8a) is by forming in a pair of radially accommodation hole side (8p) zoning of radially extending substantially;
From the above-mentioned above-mentioned rotor core (8) of axially seeing; Above-mentioned first inclination accommodation hole (81) and the above-mentioned second inclination accommodation hole (82) radial inner end separately; All has opposite face (SX); Above-mentioned opposite face (SX), face-to-face with above-mentioned radially accommodation hole side (8p), and with respect to above-mentioned radially accommodation hole side (8p) extension abreast substantially;
The size of each above-mentioned opposite face (SX), be called opposite face size SW;
The size of each above-mentioned opposite face (SX), be called overlapping dimension R with the face-to-face part in above-mentioned short hole (11a);
Above-mentioned opposite face size SW and above-mentioned overlapping dimension R are the sizes of extending along above-mentioned radially accommodation hole side (8p) respectively, set 0＜R≤SW/2.
According to any one record of claim 1～3 imbed the magnet type motor, it is characterized in that:
Axially see from above-mentioned, calling Width with respect to the vertical direction of above-mentioned radially accommodation hole (8a) bearing of trend;
The radial outer end of each above-mentioned radially accommodation hole (8a) has wide hole (8c);
The width dimensions (W2) in each above-mentioned wide hole (8c) is bigger than the width dimensions (W1) of above-mentioned radial magnet (9);
Above-mentioned rotor core (8) has from the pars intermedia of the Width in each above-mentioned wide hole (8c), towards the outstanding inside protuberance (8n) of inner radial;
The width dimensions (W3) of each above-mentioned inner protuberance (8n), littler than the width dimensions (W1) of each above-mentioned radial magnet (9), each above-mentioned inner protuberance (8n) limits above-mentioned radial magnet (9) and moves towards radially outer.
According to claim 6 record imbed the magnet type motor, it is characterized in that:
Each above-mentioned inner protuberance (8n) is positioned on the axial part of above-mentioned rotor core (8).
According to claim 7 record imbed the magnet type motor, it is characterized in that:
Each said chip (11) has with the above-mentioned prestack of above-mentioned inner protuberance (8n) accommodation hole and not with the above-mentioned prestack of above-mentioned inner protuberance (8n) accommodation hole radially radially.
According to Claim 8 record imbed the magnet type motor, it is characterized in that:
Above-mentioned inner protuberance (8n) is positioned at above-mentioned short hole (11a).
According to claim 2 record imbed the magnet type motor, it is characterized in that:
Each said chip (11) is carried out range upon range of with every 360 °/(P/2) the mode that staggers in a circumferential direction.
Applications Claiming Priority (24)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007307368 | 2007-11-28 | ||
| JP2007307370 | 2007-11-28 | ||
| JP2007307370A JP5117833B2 (en) | 2007-11-28 | 2007-11-28 | Embedded magnet type motor |
| JP2007307369 | 2007-11-28 | ||
| JP2007307369 | 2007-11-28 | ||
| JP2007307368 | 2007-11-28 | ||
| JP2007-307368 | 2007-11-28 | ||
| JP2007-307369 | 2007-11-28 | ||
| JP2007-307370 | 2007-11-28 | ||
| JP2008081412 | 2008-03-26 | ||
| JP2008-081412 | 2008-03-26 | ||
| JP2008081412A JP5301860B2 (en) | 2008-03-26 | 2008-03-26 | Embedded magnet type motor |
| JP2008-097195 | 2008-04-03 | ||
| JP2008097195 | 2008-04-03 | ||
| JP2008097195 | 2008-04-03 | ||
| JP2008108006 | 2008-04-17 | ||
| JP2008-108006 | 2008-04-17 | ||
| JP2008108006A JP5133765B2 (en) | 2008-04-17 | 2008-04-17 | Internal magnet type motor and design method thereof |
| JP2008170266A JP5128387B2 (en) | 2007-11-28 | 2008-06-30 | Embedded magnet type motor |
| JP2008170266 | 2008-06-30 | ||
| JP2008-170266 | 2008-06-30 | ||
| JP2008-286866 | 2008-11-07 | ||
| JP2008286866 | 2008-11-07 | ||
| JP2008286866A JP5373370B2 (en) | 2007-11-28 | 2008-11-07 | Embedded magnet type motor |
Related Child Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210187106.8A Division CN102738929B (en) | 2007-11-28 | 2008-11-28 | Magnet-embedding type motor |
| CN201210187181.4A Division CN102738931B (en) | 2007-11-28 | 2008-11-28 | Magnet-embedding type motor |
| CN201210187108.7A Division CN102738930B (en) | 2007-11-28 | 2008-11-28 | embedded magnet type motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101447705A CN101447705A (en) | 2009-06-03 |
| CN101447705B true CN101447705B (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210187106.8A Expired - Fee Related CN102738929B (en) | 2007-11-28 | 2008-11-28 | Magnet-embedding type motor |
| CN200810178386XA Expired - Fee Related CN101447705B (en) | 2007-11-28 | 2008-11-28 | Magnet-embedding type motor and manufacture method thereof |
| CN201210187181.4A Expired - Fee Related CN102738931B (en) | 2007-11-28 | 2008-11-28 | Magnet-embedding type motor |
| CN201210187108.7A Expired - Fee Related CN102738930B (en) | 2007-11-28 | 2008-11-28 | embedded magnet type motor |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210187106.8A Expired - Fee Related CN102738929B (en) | 2007-11-28 | 2008-11-28 | Magnet-embedding type motor |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210187181.4A Expired - Fee Related CN102738931B (en) | 2007-11-28 | 2008-11-28 | Magnet-embedding type motor |
| CN201210187108.7A Expired - Fee Related CN102738930B (en) | 2007-11-28 | 2008-11-28 | embedded magnet type motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (4) | CN102738929B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11780061B2 (en) | 2019-02-18 | 2023-10-10 | Milwaukee Electric Tool Corporation | Impact tool |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011122023A1 (en) | 2011-12-23 | 2013-06-27 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Robot sheet package of an electric motor |
| CN203219023U (en) * | 2012-12-10 | 2013-09-25 | 艾默生环境优化技术(苏州)有限公司 | Motor rotor |
| JP6131691B2 (en) * | 2013-04-17 | 2017-05-24 | 株式会社ジェイテクト | Rotating electric machine |
| JP6385712B2 (en) * | 2014-04-30 | 2018-09-05 | マブチモーター株式会社 | Rotor and brushless motor |
| JP6673707B2 (en) * | 2016-02-03 | 2020-03-25 | 日本電産サンキョー株式会社 | Interior magnet type motor |
| CN105958782A (en) * | 2016-05-12 | 2016-09-21 | 张学义 | Radial-tangential permanent magnet and brushless electromagnetism hybrid excitation driving motor |
| CN105811714A (en) * | 2016-05-12 | 2016-07-27 | 张学义 | Salient pole electromagnetic and built-in combined type permanent magnet hybrid excitation type driving motor for electric automobile |
| CN110326190B (en) * | 2017-03-03 | 2022-08-19 | 三菱电机株式会社 | Rotor, motor, compressor, and blower |
| TWM576750U (en) | 2017-07-25 | 2019-04-11 | 美商米沃奇電子工具公司 | Electrical composition, electric device system, battery pack, electric motor, motor assembly and electric motor assembly |
| CN109831071A (en) * | 2018-12-29 | 2019-05-31 | 太仓富华特种电机有限公司 | A kind of motor for refrigeration compressor with proof and electric leakage-proof safety structure |
| JP7150181B2 (en) * | 2019-07-30 | 2022-10-07 | 三菱電機株式会社 | motors, compressors, and air conditioners |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1835340A (en) * | 2006-03-30 | 2006-09-20 | 上海大学 | 'V' type builti-in rotor of permanent megnet dynamo |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100581029C (en) * | 2004-08-17 | 2010-01-13 | 山洋电气株式会社 | Permanent magnet rotary motor |
| US7705504B2 (en) * | 2005-11-07 | 2010-04-27 | Asmo Co., Ltd. | Embedded magnet type motor |
-
2008
- 2008-11-28 CN CN201210187106.8A patent/CN102738929B/en not_active Expired - Fee Related
- 2008-11-28 CN CN200810178386XA patent/CN101447705B/en not_active Expired - Fee Related
- 2008-11-28 CN CN201210187181.4A patent/CN102738931B/en not_active Expired - Fee Related
- 2008-11-28 CN CN201210187108.7A patent/CN102738930B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1835340A (en) * | 2006-03-30 | 2006-09-20 | 上海大学 | 'V' type builti-in rotor of permanent megnet dynamo |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2007-195391A 2007.08.02 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11780061B2 (en) | 2019-02-18 | 2023-10-10 | Milwaukee Electric Tool Corporation | Impact tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102738931B (en) | 2014-09-17 |
| CN102738930A (en) | 2012-10-17 |
| CN102738929B (en) | 2014-08-20 |
| CN102738930B (en) | 2014-10-01 |
| CN102738931A (en) | 2012-10-17 |
| CN102738929A (en) | 2012-10-17 |
| CN101447705A (en) | 2009-06-03 |
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