CN102904360A - Surface-magnet permanent magnet type rotating motor - Google Patents
Surface-magnet permanent magnet type rotating motor Download PDFInfo
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- CN102904360A CN102904360A CN201210265026XA CN201210265026A CN102904360A CN 102904360 A CN102904360 A CN 102904360A CN 201210265026X A CN201210265026X A CN 201210265026XA CN 201210265026 A CN201210265026 A CN 201210265026A CN 102904360 A CN102904360 A CN 102904360A
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Abstract
The invention provides a surface-magnet permanent magnet type rotating motor which can suppress leakage magnetic flux between adjacent permanent magnets in a circumferential direction and reliably perform rotation stopping of the permanent magnets in the circumferential direction. The surface-magnet permanent magnet type rotating motor (1) has a structure that enables the adjacent permanent magnets in the circumferential direction to be arranged for different polarities with their surface on a rotor (4) surface opposite the stator (3). Engaging grooves (16) extending in an axial direction are respectively formed at boundary positions of the permanent magnets (18a to 18f) of the mounting surface (12) of the permanent magnets of the rotor (4) in the circumferential direction, and the engaging grooves (16) comprises an engagement stopping member (17) which contact side surfaces of the adjacent permanent magnets to suppress the leakage magnetic flux between adjacent permanent magnets in a circumferential direction and stop rotation.
Description
Technical field
The present invention relates to surperficial magnet-type permanent magnet type rotating electrical machine, it has the structure that the mode of permanent magnet take its surface as opposed polarity that make adjacency on the circumferencial direction on the surface relative with stator of rotor arranged
Background technology
Electric rotating machine with surperficial magnet type rotor, be to stick magnet at rotor surface, utilize the flux of interlinkage of the magnet exciting coil that possesses corresponding to the magnetic flux that produces from magnet and stator and the electric rotating machine of the magnetic torque that produces, be able to extensive use by servo centered by with electric rotating machine owing to the feature such as high responsiveness.
As surperficial magnet-type permanent magnet type rotating electrical machine in the past, motion has the rotational structure in the permanent magnet synchronous rotation motor of putting down in writing in the patent documentation 1.
In this past case, along the outer peripheral face of rotating shaft with many to permanent magnet configuration be the polarity of peripheral part be NS alternately.And, the position that contacts with rotating shaft in the side that adjacent permanent magnet joins each other forms cancave embedded part, position at the rotating shaft corresponding with the cancave embedded part of selecting from this cancave embedded part forms keyway, the cancave embedded part of selecting is connected with key (key) with the keyway that forms at rotating shaft, carries out thus the spline of permanent magnet.In addition, the axial anticreep of permanent magnet is undertaken by the positioning element in rotating shaft configuration ring-type.
In addition, in the motor rotor construction of patent documentation 2 records, outer peripheral face at ring-type rotor yoke iron (yoke), configure in a circumferential direction a plurality of magnet, on the ring-type rotor yoke iron relative with the magnet connecting portion each other of adjacency, axially forming groove, by at the logical pin of this groove interpolation, come to prevent with pin the rotation of magnet.In addition, the axial location of magnet is undertaken by on the axial end of ring-type yoke the magnet fixed charge method end plate being fixed with bolt.
And then, in the servomotor and its manufacture method of patent documentation 3 records, the outer peripheral face formation keyway at rotating shaft is fastened on this keyway with key, the opposite flank of the magnet of adjacency on side and the circumferencial direction of circumferencial direction of this key is contacted, thereby carry out the spline of magnet.
The prior art document
Patent documentation
Patent documentation 1: TOHKEMY 2004-304943 communique
Patent documentation 2: TOHKEMY 2001-339887 communique
Patent documentation 3: Japanese kokai publication hei 9-331643 communique
Summary of the invention
The problem that invention will solve
But in the past case of above-mentioned patent documentation 1 record, the permanent magnet of adjacency contacts with each other on the circumferencial direction, and the cancave embedded part that the key that engages with keyway is sticked in form in the side of two permanent magnets carries out the spline of permanent magnet.Therefore because the contacts side surfaces of permanent magnet of adjacency on the circumferencial direction, so exist leakage magnetic flux more, with the such unsolved problem of the flux of interlinkage minimizing between the magnet exciting coil of stator.In addition, need to form cancave embedded part in the side of permanent magnet, exist the machining period of permanent magnet to increase so unsolved problem.
In addition, in the past case of patent documentation 2 records, with the past case of above-mentioned patent documentation 1 record similarly, the permanent magnet of adjacency contacts with each other on the circumferencial direction, exist leakage magnetic flux more, with the such unsolved problem of the flux of interlinkage minimizing between the magnet exciting coil of stator.In addition, owing between the permanent magnet of adjacency, insert logical pin, so exist unwanted effect of stress in the so unsolved problem of permanent magnet.
And then, in the past case of patent documentation 3 records, between adjacent magnet, insertion is sticked in the key of the keyway that forms at rotating shaft, between the magnet of adjacency, form the gap, and because the height of key is the height near the thickness of magnet, therefore have following problem: the leakage magnetic flux by key is more between the magnet of adjacency in a circumferential direction, flux of interlinkage for the magnet exciting coil of stator reduces, and because producing in the axial direction the part have the part of key and not have key between the magnet of adjacency, and axial magnetic flux density changes.
So, the present invention is conceived to the unsolved problem of above-mentioned past case and finishes, its purpose is to provide a kind of surperficial magnet-type permanent magnet type rotating electrical machine, it can reduce the leakage magnetic flux between the permanent magnet of adjacency on the circumferencial direction, and can carry out reliably the spline on the circumferencial direction of permanent magnet.
Be used for solving the method for problem
In order to reach above-mentioned purpose, the first mode of surperficial magnet-type permanent magnet type rotating electrical machine of the present invention is a kind of surperficial magnet-type permanent magnet type rotating electrical machine, it has the structure that the mode of permanent magnet take its surface as opposed polarity that make adjacency on the circumferencial direction on the surface relative with stator of rotor arranged, constitute: the boundary position of the circumferencial direction of the above-mentioned permanent magnet on the above-mentioned permanent magnet installed surface of above-mentioned rotor is respectively formed at the upwardly extending slot of axle, engaging has stop component in this slot, this stop component contacts respectively with the side of the above-mentioned permanent magnet of adjacency, leakage magnetic flux on the inhibition circumferencial direction between the above-mentioned permanent magnet of adjacency, and stop above-mentioned permanent magnet to rotate.
In addition, the second mode of surperficial magnet-type permanent magnet type rotating electrical machine of the present invention constitutes: above-mentioned stop component is formed the cross section tetragonal bar-shaped.
And then, the Third Way of surperficial magnet-type permanent magnet type rotating electrical machine of the present invention constitutes: above-mentioned slot is by axially being divided into a plurality of engagement groove parts of cutting apart and consisting of at above-mentioned rotating shaft, the engagement groove part of cutting apart of adjacency separates predetermined distance ground and forms, and engages individually respectively above-mentioned stop component respectively cutting apart engagement groove part.
In addition, the cubic formula of surperficial magnet-type permanent magnet type rotating electrical machine of the present invention constitutes: above-mentioned slot forms axially extending at above-mentioned rotating shaft, above-mentioned stop component is divided into a plurality of, the stop component of cutting apart that is split to form is fastened in the above-mentioned slot across the distance piece of non magnetic system.
And then about the 5th mode of surperficial magnet-type permanent magnet type rotating electrical machine of the present invention, above-mentioned stop component is formed by nonmagnetic substance.
In addition, the 6th mode about surperficial magnet-type permanent magnet type rotating electrical machine of the present invention, when above-mentioned stop component is fastened in the above-mentioned slot, be less than the thickness of above-mentioned permanent magnet with above-mentioned stop component from the outstanding outstanding length setting of above-mentioned permanent magnet installed surface.
And then, about the 7th mode of surperficial magnet-type permanent magnet type rotating electrical machine of the present invention, be below half of maximum ga(u)ge of above-mentioned permanent magnet from the outstanding outstanding length setting of above-mentioned permanent magnet installed surface with above-mentioned stop component.
In addition, all directions formula of surperficial magnet-type permanent magnet type rotating electrical machine of the present invention constitutes: above-mentioned stop component is fixed on above-mentioned slot with adhesive.
And then the 9th mode of surperficial magnet-type permanent magnet type rotating electrical machine of the present invention constitutes: above-mentioned permanent magnet is fixed on above-mentioned permanent magnet installed surface with adhesive.
In addition, the tenth mode of surperficial magnet-type permanent magnet type rotating electrical machine of the present invention constitutes: above-mentioned rotor has rotating shaft, described rotating shaft has arranges the permanent magnet installation surface that a plurality of above-mentioned permanent magnets are installed in the axial direction, and the axial both ends that the surface is installed at this permanent magnet form respectively the anticreep stage portion less than the thickness of above-mentioned permanent magnet.
And then about the 11 mode of surperficial magnet-type permanent magnet type rotating electrical machine of the present invention, above-mentioned anticreep is made of the annular flange flange of extending in a circumferential direction with stage portion.
In addition, the 12 mode of surperficial magnet-type permanent magnet type rotating electrical machine of the present invention constitutes: with above-mentioned anticreep installing below half of maximum ga(u)ge that the surface is above-mentioned permanent magnet to the height setting of outer peripheral face from above-mentioned permanent magnet with stage portion.
And then the 13 mode of surperficial magnet-type permanent magnet type rotating electrical machine of the present invention constitutes: above-mentioned permanent magnet, its outer peripheral face prevent to splash covering with band.
The effect of invention
According to the present invention, a kind of electric rotating machine is provided, its permanent magnet owing to adjacency on the circumferencial direction suppresses leakage magnetic flux and carries out spline by stop component, therefore need not the spline that any processing just can be carried out permanent magnet is reliably carried out in the side of permanent magnet, and by suppressing leakage magnetic flux, make the flux of interlinkage increase for the magnet exciting coil of stator, efficient is good.
Description of drawings
Fig. 1 is the sectional view of an execution mode of expression surperficial magnet-type permanent magnet type rotating electrical machine of the present invention.
Fig. 2 is that the rotor with Fig. 1 cuts a part and to its side view that represents.
Fig. 3 is the amplification sectional view on the A-A line of Fig. 2.
Fig. 4 is the side view that the rotating shaft behind the permanent magnet is unloaded in expression.
Fig. 5 is the amplification sectional view on the B-B line of Fig. 4.
Fig. 6 is the figure of expression stop component, (a) is side view, (b) is front elevation.
Fig. 7 is the side view of other embodiment of expression rotating shaft of the present invention.
Symbol description
1 ... surface magnet-type permanent magnet-type motor, 2 ... motor rack, 3 ... stator, 4 ... rotor, 7 ... groove, 8 ... magnet exciting coil, 11 ... rotating shaft, 12 ... the permanent magnet installed surface, 13a, 13b ... the anticreep stage portion, 14a, 14b ... rolling bearing, 16 ... slot, 16a～16d ... cut apart engagement groove part, 17 ... stop component, 18 ... the permanent magnet group, 18a～18f ... permanent magnet, 19 ... bundling belt, 21 ... distance piece
Embodiment
Below, based on the description of drawings embodiments of the present invention.
Fig. 1 be expression an embodiment of the invention, expression is as the sectional view of the surperficial magnet-type permanent magnet-type motor of surperficial magnet-type permanent magnet type rotating electrical machine.
Among Fig. 1, surperficial magnet-type permanent magnet-type motor 1 has motor rack 2 cylindraceous, disposes stator 3 in interior all sides of this motor rack 2.Interior all sides at this stator 3 relatively dispose rotor 4 across the space of regulation.
As shown in Figure 2, stator 3 has stator core 6, and this stator core 6 in the axial direction stator of lamination after to the electromagnetic steel plate stamping-out of high magnetic permeability forms with central layer.At this stator core 6, be formed with the groove 7 that extends in the axial direction in inner peripheral surface one side.In this groove 7, be wound with magnet exciting coil 8.Herein, the method for winding of magnet exciting coil 8 can adopt any in concentrated coiling and the coiling that distributes.
On the other hand, such as Fig. 2～shown in Figure 5, rotor 4 possesses rotating shaft 11.This rotating shaft 11 as shown in Figure 4 and Figure 5, is formed with permanent magnet installed surface 12 as the outer peripheral face of larger diameter cylindrical portion at axial central portion.In addition, be formed with anticreep that the annular flange portion by the external diameter larger than the external diameter of permanent magnet installed surface 12 forms at the axial two ends of the permanent magnet installed surface 12 of rotating shaft 11 with stage portion 13a and 13b.
These anticreeps are below half of maximum ga(u)ge (for example 18mm) of each permanent magnet 18a～18f of permanent magnet group 18 described later to the outstanding length of radial direction with stage portion 13a and 13b, be preferably set to 1/3～1/4 degree, suppress the leakage magnetic flux of permanent magnet 18a～18f.This anticreep outstanding length of the radial direction of stage portion 13a and 13b, if it is more short better to consider to reduce the magnetic leakage general rule, but owing to can not bring into play the anticreep effect when too short, so be preferably set to 1/3～1/4 degree of the maximum ga(u)ge of permanent magnet 18a～18f.
And then, with the outside of stage portion 13a and 13b rolling bearing 14a and 14b are installed at the anticreep of rotating shaft 11.The outer ring of this rolling bearing 14a and 14b for example is embedded in the central opening 2c that the 2a of end plate section, 2b at the axial two ends of motor rack 2 form.By this rolling bearing 14a and 14b, rotating shaft 11 is supported by motor rack 2, and can rotate freely.
At permanent magnet installed surface 12, as shown in Figure 4 and Figure 5, be formed with six slots 16 that extend in the axial direction by 60 ° interval in a circumferential direction.These slots 16 as shown in Figure 4, consist of by being divided in the axial direction the tetrameric engagement groove part 16a～16d of cutting apart.Cutting apart of the adjacency of respectively cutting apart engagement groove part 16a～16d be formed with between the slot specific length without slot part 16e.
And, each slot 16 cut apart engagement groove part 16a～16d, engaging have Fig. 6 (a) and (b) shown in the cross section quadrangle and have bar-shaped such as the stop component 17 that is consisted of by magnetics such as iron.The thickness of this stop component 17 and the degree of depth of cutting apart engagement groove part 16a～16d are set as, and are below half of maximum ga(u)ge (18mm) of for example each permanent magnet 18a～18f of permanent magnet group 18 described later being sticked in when cutting apart in engagement groove part 16a～16d from the permanent magnet installed surface 12 outstanding length of its outer peripheral face.Herein, stop component 17 is from the more short leakage magnetic flux that more can suppress permanent magnet 18a～18f of the outstanding length of permanent magnet installed surface 12, but can not expect stopping effect when too short, therefore be preferably permanent magnet 18a～18f maximum ga(u)ge about 1/6.
Herein, cut apart engagement groove part 16a～16d and cut apart the stop component 17 that engagement groove part 16a～16d engages with these, except simple snap-fit relationship, stop component 17 is entrenched in cuts apart among engagement groove part 16a～16d, and then also can fixedly cut apart engagement groove part 16a～16d and stop component 17 with adhesive.
And, at the permanent magnet installed surface 12 of rotating shaft 11, for example 11 group permanent-magnet groups 18 are installed in the axial direction.These permanent magnet groups 18 respectively as shown in Figure 3, six permanent magnet 18a～18f that for example are magnetized at thickness direction install in such a way: the polarity of outer peripheral face one side is opposed polarity between the permanent magnet of adjacency, i.e. in a circumferential direction the N utmost point and S utmost point alternative arrangement.In addition, to be configured to be that axial end between the magnet of mode adjacency of identical polar is in contact with one another to each permanent magnet 18a～18f of each permanent magnet group 18 in the axial direction.
In addition, each permanent magnet 18a～18f of each permanent magnet group 18 is configured to two contacts side surfaces on the circumferencial direction of outstanding protuberance from permanent magnet installed surface 12 to foreign side of two end faces of circumferencial direction and stop component 17.Thereby two sides of the circumferencial direction of each permanent magnet 18a～18f of the adjacency of each permanent magnet group 18 are not in contact with one another, but it is relative to clip the space of amount of thickness of circumferencial direction of stop component 17.
Herein, each permanent magnet 18a～18f of each permanent magnet group 18, side face has applied under the state of adhesive within it, is installed on the permanent magnet installed surface 12, and fixes by adhesive.
And then the outer peripheral face of each permanent magnet 18a～18f of each permanent magnet group 18 of installing at permanent magnet installed surface 12 is wound with what inner face had formed adhesive surface and prevents from splashing the bundling belt 19 of usefulness.
The action of above-mentioned execution mode then, is described.
For combined rotor 4, respectively the cutting apart among engagement groove part 16a～16d engaging stop component 17 and be fixed by bonding etc. of the slot 16 that at first forms at the permanent magnet installed surface 12 of rotating shaft 11.Under this state, behind the back side one side applying adhesive of each permanent magnet 18a～18f of first permanent magnet group 18, the end face of axial anticreep stage portion 13a one side of each permanent magnet 18a～18f is contacted with anticreep stage portion 13a, and so that the mode of the circumferencial direction contacts side surfaces of circumferencial direction end face and stop component 17 is installed in each permanent magnet 18a～18f anticreep stage portion 13a one side of permanent magnet installed surface 12.
Afterwards, in turn each permanent magnet 18a～18f of permanent magnet group 18 is installed in permanent magnet installed surface 12 in such a way, namely, the axial left side of each permanent magnet 18a～18f is contacted with the axial right side of each permanent magnet 18a～18f of mounted permanent magnet group 18, and make the circumferencial direction contacts side surfaces of circumferencial direction end face and stop component 17.
Then, last permanent magnet group 18 for low order end one side, so that its axial right side and anticreep contact and make the mode of the circumferencial direction contacts side surfaces of circumferencial direction end face and stop component 17 with stage portion 13b, each permanent magnet 18a～18f is installed on the permanent magnet installed surface 12.
And the order that the permanent magnet 18a～18f of permanent magnet group 18 is installed in the permanent magnet installed surface 12 of rotating shaft 11 is not limited to above narration, also can be from anticreep with the stage portion 13b one side permanent magnet 18a～18f of mounting permanent magnet group 18 in turn.And then, permanent magnet 18a among the permanent magnet 18a～18f of each permanent magnet group 18 also can be installed in the axial direction in turn, then mounting permanent magnet 18b in turn in the axial direction, last mounting permanent magnet 18f in turn in the axial direction, the permanent magnet 18a～18f of permanent magnet group 18 can select arbitrarily erection sequence to the erection sequence of permanent magnet installed surface 12.
Like this, the permanent magnet 18a～18f of permanent magnet group 18 is during to the installation of the permanent magnet installed surface 12 of rotating shaft 11, consists of rotors 4 at reel prevent from the splashing bundling belt 19 of usefulness of the outer peripheral face of the permanent magnet 18a～18f of each permanent magnet group 18.
Then, this rotor 4 is installed the inner ring of rolling bearing 14a and 14b in the both ends of its rotating shaft 11 side, be installed in by the outer ring with these rolling bearings 14a and 14b among the central opening 2c of the 2a of end plate section of motor rack 2 and 2b, can make rotor 4 free rotary ground supporting rotors 4 at motor rack 2.
Under this state, can be as shown in Figure 1, the outer peripheral face of rotor 4 is relative with the inner peripheral surface of stator 3 across the gap of regulation, consists of surperficial magnet-type permanent magnet-type motor 1.
Under this state, by magnet exciting coil 8 energisings to stator 3, can be to rotor 4 rotary actuations.
Like this, according to above-mentioned execution mode, each permanent magnet 18a～18f of mounting permanent magnet group 18 and being adhesively fixed in turn on the permanent magnet installed surface 12 of rotating shaft 11, the circumferencial direction end in contact of cutting apart the stop component 17 that engages among engagement groove part 16a～16d of the end face of the circumferencial direction of each permanent magnet 18a～18f and the slot 16 that forms at rotating shaft 11, therefore can stop reliably each permanent magnet 18a～18f in the movement of circumferencial direction, carry out reliably spline.Thereby, also can stop reliably permanent magnet 18a～18f in the movement of circumferencial direction in the situations such as Poor cohesion even produced at permanent magnet 18a～18f.
At this moment, as shown in Figure 3, the side of the circumferencial direction of the permanent magnet 18a～18f of adjacency is across relative with the corresponding interval of length on the circumferencial direction of stop component 17 in a circumferential direction.And, with stop component 17 from the outstanding length setting of permanent magnet installed surface 12 be maximum ga(u)ge with respect to each permanent magnet 18a～18f for below half, be preferably set to shorter by about 1/6.Therefore, reduce across the area through the magnetic circuit of stop component 17 of the permanent magnet 18a～18f of the opposed polarity of stop component 17 adjacency that formed by magnetic, can suppress leakage magnetic flux.Consequently, the flux of interlinkage between the permanent magnet 18a～18f that can make in 12 installations of permanent magnet installed surface and the magnet exciting coil 8 of stator 3 increases, and the surperficial magnet-type permanent magnet-type motor 1 that efficient is good and reliability is high can be provided.
And then, because the slot 16 that forms at rotating shaft 11 is made of the engagement groove part 16a～16d of cutting apart that is split into four, and stop component 17 is arranged respectively cutting apart holding section 16a～16d engaging, so between stop component 17, form the space part of specific length.Because therefore this space part and can not form magnetic circuit between the opposing end surface of the permanent magnet 18a～18f of adjacency can further reduce the leakage magnetic flux between permanent magnet 18a～18f., as the material of stop component 17, use the ironwork identical with the material of rotating shaft 11 herein, can prevent thermal expansion difference.
In addition, because the axial two ends at the permanent magnet installed surface 12 of rotating shaft 11, be formed with the permanent magnet 18a～18f of prevention permanent magnet group 18 to anticreep stage portion 13a and the 13b of the disengaging of axial foreign side, so can stop reliably the permanent magnet 18a～18f of permanent magnet group 18 to break away to axial foreign side.Therefore, even occured also can stop reliably permanent magnet 18a～18f to axial movement in the situations such as Poor cohesion at each permanent magnet 18a～18f of permanent magnet group 18.
At this moment, as shown in Figure 2, anticreep is the height below half with stage portion 13a and 13b from the maximum ga(u)ge that the projecting height of permanent magnet installed surface 12 is set as with respect to permanent magnet 18a～18f.Therefore, through anticreep with stage portion 13a and 13b, reduce to the area of the magnetic circuit of the permanent magnet 18a～18f of the opposed polarity of adjacency, can suppress leakage magnetic flux.Consequently, can make the flux of interlinkage increase between the magnet exciting coil 8 of permanent magnet 18a～18f of contacting with stage portion 13a and 13b with the anticreep of installing at permanent magnet installed surface 12 and stator 3, the surperficial magnet-type permanent magnet-type motor 1 that efficient is good and reliability is high is provided.
And then, be coated with the bundling belt 19 of the usefulness that prevents from splashing owing to reeling at the outer peripheral face of each permanent magnet 18a～18f of each permanent magnet group 18, so what can prevent that Poor cohesion because of permanent magnet 18a～18f from causing splashes, even and in the damaged situation of separating of a part that makes permanent magnet 18a～18f because of certain reason, also can prevent reliably splashing of its fragment.
In addition, in the above-described embodiment, because can be only by on rotating shaft 11 directly each permanent magnet 18a～18f of mounting permanent magnet group 18 consist of rotor 4, the rotor core that is made of laminated steel plate need to be set in order to consist of rotor, so do not need to be used to form the blanking equipment of laminated steel plate and mould etc., the stop component 17 of rotating shaft 11 after the cut and for example extrusion molding is easily made got final product, can reduce manufacturing cost.
And, in the above-described embodiment, the slot 16 that forms at rotating shaft 11 has been described by four situations that engagement groove part 16a～16d consists of that are separated from each other, but has been not limited to this.That is, also can make slot 16 be long on an axial slot as shown in Figure 7, make the stop component 17 that engages with it across engaging such as the distance piece 21 that is formed by nonmagnetic materials such as aluminium.In this case, also can obtain the action effect identical with being formed with the situation of cutting apart engagement groove part 16a～16d.
In addition, in the above-described embodiment, illustrated by being divided into the tetrameric engagement groove part 16a～16d of cutting apart to consist of slot 16 and cut apart the situation that engagement groove part 16a～16d engages respectively stop component 17 at these.But, be not limited to said structure, can be a slot 16 with cutting apart engagement groove part 16a～16d link also, installation shaft is to long stop component therein.
In addition, in the above-described embodiment, the situation that stop component 17 is formed by magnetics such as iron has been described, but has been not limited to this, also can form stop component 17 with nonmagnetic materials such as aluminium.In this case, because can be by the magnetic circuit between stop component 17 formation permanent magnet 18a～18f, so can further reduce the leakage magnetic flux of permanent magnet 18a～18f.
And then, in the above-described embodiment, the situation that 11 row permanent magnet groups 18 are installed at the permanent magnet installed surface 12 of rotating shaft 11 has been described.But, the invention is not restricted to said structure, permanent magnet group 18 can consist of by change the axial width of the permanent magnet 18a～18f of permanent magnet group 18, the permanent magnet group 18 that any columns is installed to the installation columns of permanent magnet installed surface 12.
Equally, the Segmentation Number of cutting apart engagement groove part that consists of slot 16 also is not limited to four to be cut apart, and can be Segmentation Number arbitrarily.
In addition, in the above-described embodiment, illustrated with annular flange flange to form the situation that anticreep is used stage portion 13a and 13b, but be not limited to this, also can form with miscellaneous parts such as C shape back-up rings.
And then in the above-described embodiment, the number of poles that rotor 4 has been described is 6 situation, but is not limited to this, can be even number number of poles arbitrarily.
In addition, in the above-described embodiment, illustrated that bundling belt 19 with the usefulness that prevents from splashing covers the situation of outer peripheral face of each permanent magnet 18a～18f of permanent magnet groups 18.But, the invention is not restricted to said structure, also can replace bundling belt 19 to cover permanent magnet 18a～18f with the non-magnetic cylinder body, also can omit under certain conditions the nappe of permanent magnet 18a～18f.
And then, in the above-described embodiment, the situation of the surperficial magnet-type permanent magnet-type motor that applies the present invention to inner-rotor type has been described, and the present invention also can be applied to the surperficial magnet-type permanent magnet-type motor of outer-rotor type.
In addition, in the above-described embodiment, the situation that applies the present invention to surperficial magnet-type permanent magnet-type motor has been described, but has been not limited to this, applied the present invention to surperficial magnet-type permanent-magnet generator, also can obtain action effect same as described above.
Claims (13)
1. surperficial magnet-type permanent magnet type rotating electrical machine, it has the structure that the mode of permanent magnet take its surface as opposed polarity that make adjacency on the circumferencial direction on the surface relative with stator of rotor arranged, and above-mentioned surperficial magnet-type permanent magnet type rotating electrical machine is characterised in that:
The boundary position of the circumferencial direction of the described permanent magnet on the described permanent magnet installed surface of described rotor is respectively formed at the upwardly extending slot of axle, engaging has stop component in this slot, described stop component contacts respectively with the side of the described permanent magnet of adjacency, leakage magnetic flux on the inhibition circumferencial direction between the described permanent magnet of adjacency, and stop described permanent magnet to rotate.
2. surperficial magnet-type permanent magnet type rotating electrical machine as claimed in claim 1 is characterized in that:
It is tetragonal bar-shaped that described stop component forms the cross section.
3. surperficial magnet-type permanent magnet type rotating electrical machine as claimed in claim 1 or 2 is characterized in that:
Described slot is by axially being divided into a plurality of engagement groove parts of cutting apart and consisting of of described rotating shaft, and the engagement groove part of cutting apart of adjacency separates the formation of predetermined distance ground, engages respectively described stop component in the engagement groove part respectively cutting apart.
4. surperficial magnet-type permanent magnet type rotating electrical machine as claimed in claim 1 or 2 is characterized in that:
Described slot forms the axially extension at described rotating shaft, and described stop component is split into a plurality of, and the stop component of cutting apart through being split to form is fastened in the described slot across the distance piece of non magnetic system.
5. such as the described surperficial magnet-type permanent magnet type rotating electrical machine of any one in the claim 1～4, it is characterized in that:
Described stop component is formed by nonmagnetic substance.
6. such as the described surperficial magnet-type permanent magnet type rotating electrical machine of any one in the claim 1～5, it is characterized in that:
When described stop component was fastened in the described slot, described stop component was little from the thickness of the outstanding described permanent magnet of outstanding Length Ratio of described permanent magnet installed surface.
7. surperficial magnet-type permanent magnet type rotating electrical machine as claimed in claim 6 is characterized in that:
Be below half of maximum ga(u)ge of described permanent magnet from the outstanding outstanding length setting of described permanent magnet installed surface with described stop component.
8. such as the described surperficial magnet-type permanent magnet type rotating electrical machine of any one in the claim 1～7, it is characterized in that:
Described stop component is fixed on described slot with adhesive.
9. such as the described surperficial magnet-type permanent magnet type rotating electrical machine of any one in the claim 1～8, it is characterized in that:
Described permanent magnet is fixed on described permanent magnet installed surface with adhesive.
10. such as the described surperficial magnet-type permanent magnet type rotating electrical machine of any one in the claim 1～9, it is characterized in that:
Described rotor has rotating shaft, described rotating shaft has for arranging vertically the permanent magnet that a plurality of described permanent magnets are installed installs the surface, and the axial both ends that the surface is installed at this permanent magnet are formed with respectively the anticreep stage portion lower than the thickness of described permanent magnet.
11. surperficial magnet-type permanent magnet type rotating electrical machine as claimed in claim 10 is characterized in that:
Described anticreep is made of the annular flange flange of extending in a circumferential direction with stage portion.
12. such as claim 10 or 11 described surperficial magnet-type permanent magnet type rotating electrical machines, it is characterized in that:
With described anticreep with stage portion the surface is installed to the height of outer peripheral face from described permanent magnet, be set as below half of maximum ga(u)ge of described permanent magnet.
13. such as the described surperficial magnet-type permanent magnet type rotating electrical machine of any one in the claim 1～12, it is characterized in that:
Described permanent magnet, its outer peripheral face prevent to splash covering with band.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-165476 | 2011-07-28 | ||
| JP2011165476A JP2013031287A (en) | 2011-07-28 | 2011-07-28 | Surface magnet type permanent magnet rotating electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102904360A true CN102904360A (en) | 2013-01-30 |
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ID=47576456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210265026XA Pending CN102904360A (en) | 2011-07-28 | 2012-07-27 | Surface-magnet permanent magnet type rotating motor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2013031287A (en) |
| CN (1) | CN102904360A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109309419A (en) * | 2017-07-26 | 2019-02-05 | 发那科株式会社 | Rotor and rotating electric machine |
| CN112713707A (en) * | 2020-12-08 | 2021-04-27 | 上海大学 | Rotation type miniature underwater generator based on magnetic flux density sudden change |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6231355A (en) * | 1985-07-27 | 1987-02-10 | Fuji Electric Co Ltd | Rotor with permanent magnet |
| JPH04105527A (en) * | 1990-08-23 | 1992-04-07 | Fuji Electric Co Ltd | Rotor with permanent magnet for electric rotating machine |
| JP2001218393A (en) * | 2000-02-04 | 2001-08-10 | Matsushita Electric Ind Co Ltd | Permanent magnet electric motor |
| JP2004023864A (en) * | 2002-06-14 | 2004-01-22 | Meidensha Corp | Rotor of permanent magnet rotary electric machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62101371U (en) * | 1985-12-18 | 1987-06-27 | ||
| JPH099539A (en) * | 1995-06-23 | 1997-01-10 | Meidensha Corp | Rotor of permanent magnet rotary electric machine |
| JP2004304943A (en) * | 2003-03-31 | 2004-10-28 | Shinko Electric Co Ltd | Rotor mechanism in permanent magnet type synchronous rotary electric machine |
| JP4882293B2 (en) * | 2005-07-13 | 2012-02-22 | シンフォニアテクノロジー株式会社 | Method for manufacturing rotor of permanent magnet synchronous rotating electric machine |
| JP4671997B2 (en) * | 2007-10-23 | 2011-04-20 | 三菱電機株式会社 | Rotor for rotating electrical machine and method for manufacturing the same |
| JP2010200440A (en) * | 2009-02-24 | 2010-09-09 | Panasonic Corp | Rotor, rotating electric machine using the same, electric blower, and electric cleaner |
-
2011
- 2011-07-28 JP JP2011165476A patent/JP2013031287A/en active Pending
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2012
- 2012-07-27 CN CN201210265026XA patent/CN102904360A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6231355A (en) * | 1985-07-27 | 1987-02-10 | Fuji Electric Co Ltd | Rotor with permanent magnet |
| JPH04105527A (en) * | 1990-08-23 | 1992-04-07 | Fuji Electric Co Ltd | Rotor with permanent magnet for electric rotating machine |
| JP2001218393A (en) * | 2000-02-04 | 2001-08-10 | Matsushita Electric Ind Co Ltd | Permanent magnet electric motor |
| JP2004023864A (en) * | 2002-06-14 | 2004-01-22 | Meidensha Corp | Rotor of permanent magnet rotary electric machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109309419A (en) * | 2017-07-26 | 2019-02-05 | 发那科株式会社 | Rotor and rotating electric machine |
| CN112713707A (en) * | 2020-12-08 | 2021-04-27 | 上海大学 | Rotation type miniature underwater generator based on magnetic flux density sudden change |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013031287A (en) | 2013-02-07 |
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Application publication date: 20130130 |