CN101247054A - Stator for motor - Google Patents

Stator for motor Download PDF

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Publication number
CN101247054A
CN101247054A CNA2008100090939A CN200810009093A CN101247054A CN 101247054 A CN101247054 A CN 101247054A CN A2008100090939 A CNA2008100090939 A CN A2008100090939A CN 200810009093 A CN200810009093 A CN 200810009093A CN 101247054 A CN101247054 A CN 101247054A
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CN
China
Prior art keywords
pair
chimeric
yoke
recess
bobbin
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Granted
Application number
CNA2008100090939A
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Chinese (zh)
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CN101247054B (en
Inventor
宫下利仁
日置洋
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Sanyo Electric Co Ltd
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Sanyo Electric Co Ltd
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Publication of CN101247054A publication Critical patent/CN101247054A/en
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Publication of CN101247054B publication Critical patent/CN101247054B/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12Stationary parts of the magnetic circuit
    • H02K1/18Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12Stationary parts of the magnetic circuit
    • H02K1/14Stator cores with salient poles
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/46Fastening of windings on the stator or rotor structure
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/46Fastening of windings on the stator or rotor structure
    • H02K3/52Fastening salient pole windings or connections thereto
    • H02K3/521Fastening salient pole windings or connections thereto applicable to stators only

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

A projecting portion 23h is integrally provided at a first connecting portion 23e of a bobbin 23. The projecting portion 23h has a triangular cross-section taken in an orthogonal direction orthogonal to a laminating direction of the steel plates 21 and parallel to magnetic steel plates 21. The section of the projecting portion is geometrically similar in shape to a cross-section of a fitting recessed portion 7a taken in the orthogonal direction. The cross-section of the projecting portion 23h is substantially the same in size as or slightly smaller than the cross-section of the fitting recessed portion 7a. With this arrangement, when one ends of six magnetic columns 13 of a magnetic pole constituent member 9 are brought into engagement with six fitting recessed portions 7a, projecting portions 23h passes through the fitting recessed portions 7a and come out of the fitting recessed portions 7a.

Description

Motor stator
Technical field
The present invention relates to motor stator.
Background technology
In No. 3811179 communique of Japan Patent (patent documentation 1), disclose the stator core of the field structure body that possesses the inboard that has the ring-type yoke and be entrenched in the ring-type yoke and the motor stator of a plurality of excitation spiral portion.The field structure body has: links with yoke, and a plurality of poles of assembling excitation spiral portion; The a plurality of magnetic pole strength formation portion that has magnetic pole strength in interior all sides; The a plurality of linking parts that link two magnetic pole strength formation portions of adjacency respectively.The interior perimembranous of yoke is formed with the chimeric respectively a plurality of chimeric recess of using of an end of a plurality of poles to field structure body opening.In a plurality of chimeric circumferential both sides of the interior perimembranous of yoke, be formed with respectively and the chimeric continuous pair of planar portion of inner surface with recess with recess.Excitation spiral portion comprises: formed by insulating material, and be embedded in the bobbin (bobbin) of pole; Be wound on the spiral conductor of bobbin.This bobbin possesses integratedly: be embedded in pole, and the cylindrical portion that supplies the spiral conductor to reel; Be arranged on an end of cylindrical portion, and have first flange part of a pair of flat that contacts with the pair of planar portion of yoke; Be arranged at the other end of cylindrical portion, and second flange part that contacts with magnetic pole strength formation portion.
No. 3811179 communique of [patent documentation 1] Japan Patent
Because this stator core increases the space (ratio that occupies the interior space of slit with the spiral conductor is that activity coefficient (Zhan Plot leads) of the spiral conductor of the cylindrical portion that is wound on bobbin, therefore, seek to reduce the thickness of the flange part of bobbin.Yet, if reduce the thickness of the flange part of bobbin, because the stress the during coiling of spiral conductor may cause bobbin distortion or damaged.Its result produces the electric insulating effect that reduces bobbin, maybe the bobbin that is wound with the spiral conductor can not be embedded in the problem of pole and so on.Therefore, in the structure of in the past bobbin, reduce to have the limit on the thickness of flange part of bobbin.
Summary of the invention
The object of the present invention is to provide the big activity coefficient that can keep the spiral conductor, and the distortion or the damaged motor stator of the bobbin can prevent the coiling of spiral conductor the time.
Another object of the present invention is to provide and to prevent that bobbin from becoming the motor stator of chimeric fault when the field structure body is embedded in yoke.
Motor stator as the improved object of the present invention possesses: stator core, and it has the ring-type yoke and is embedded in the field structure body of the inboard of ring-type yoke; Excitation spiral portion, it is arranged on the field structure body.The field structure body has: a plurality of poles, and its week in yoke upwards keeps the inboard of arranged spaced in the ring-type yoke, and has an end and the other end that is positioned at the radially inner side of this end of the yoke of being attached at respectively, and assembling excitation spiral portion; A plurality of magnetic pole strength formation portion, it is separately positioned on the other end, and has magnetic pole strength in interior all sides; A plurality of linking parts, it links two magnetic pole strength formation portions of adjacency respectively.Yoke and field structure body are folded by multi-disc magnetic steel flaggy respectively and are constituted.Interior perimembranous in yoke is formed with a plurality of chimeric recesses of using, and this is chimeric with the two direction openings of recess towards the stacked direction of multi-disc magnetic steel plate, and towards field structure body opening, chimeric respectively with an end of a plurality of poles.In a plurality of chimeric circumferential both sides of the interior perimembranous of yoke, be formed with respectively and the chimeric continuous pair of planar portion of inner surface with recess with recess.Excitation spiral portion comprises: formed by insulating material, and be embedded in the bobbin of pole; Be wound on the spiral conductor of bobbin.Bobbin possesses integratedly: be embedded in pole, and the cylindrical portion of spiral conductor coiling; Be arranged on an end of cylindrical portion, and have first flange part of a pair of flat that contacts with the pair of planar portion of yoke; Be arranged at the other end of cylindrical portion, second flange part that contacts with magnetic pole strength formation portion.In the present invention, first flange part possesses: first linking portion that links an end separately of a pair of flat; Second linking portion that links the other end separately of a pair of flat.Also have, be provided with protuberance integratedly at first linking portion, this protuberance is embedded in a plurality of chimeric when use recess at an end of a plurality of poles of field structure body, with after in the recess, stretches out the outside at chimeric usefulness recess by chimeric.Protuberance is outstanding from the peristome of a direction upper shed of the stacked direction of chimeric usefulness recess.
As described herein, if protuberance is set integratedly, then, can improve the mechanical strength of first flange part owing to utilize protuberance to increase the thickness of first linking portion of first flange part at first linking portion.Therefore, can be under the state of the big activity coefficient of keeping the spiral conductor, the distortion or the breakage of the bobbin when preventing the coiling of spiral conductor.
Being preferably disposed on the edge of protuberance of first flange part and section shape when with the orthogonal direction of stacked direction quadrature blocking parallel with the magnetic steel plate is: with the chimeric section shape similar shapes when described orthogonal direction blocks with recess.By such setting, can utilize protuberance to increase the thickness of first linking portion as far as possible.
Be embedded in chimeric when using recess as long as the cross sectional shape of protuberance has with a end at pole, make chimeric inner surface and the shape similar shapes that contacts of the outer surface of protuberance with recess, just can utilize protuberance to increase the thickness of first linking portion to greatest extent.
Preferably second linking portion at first flange part has formed braking parts, when this braking parts is embedded in the chimeric usefulness recess at an end of pole fully, with the yoke butt.If be provided with like this, then be embedded at an end of a plurality of poles of field structure body a plurality of chimeric with under the situations of recess, braking parts and yoke butt.Thus, by confirming the position with respect to yoke of braking parts, can confirm the location of field structure body simply.In addition, braking parts increases the thickness of second linking portion, can improve the mechanical strength of second linking portion.
In addition, forming a pair of rib that extends respectively along the chimeric through hole of pole at a pair of flat of bobbin also can.In this case, constitute chimeric inner surface by distinguishing continuous pair of angled planar portions with recess with pair of planar portion.Also have, with in the pair of angled planar portions be embedded between the end of chimeric pole with recess, a pair of rib that forms bobbin is the mode in chimeric a pair of space respectively, the size of regulation pair of angled planar portions.If be provided with like this, then, increase the thickness of a pair of flat of bobbin partially, thereby can further improve the mechanical strength of first flange part by utilizing a pair of rib.
In addition, the shape of the front end area of preferred first linking portion forms, and the width dimensions of the direction that a pair of flat is arranged becomes big shape gradually along with close to a pair of flat from front end.If form such shape, the bight of both sides of front end area of first connecting portion that then can prevent bobbin with the yoke butt, and becomes chimeric fault when the field structure body is embedded in yoke.Specifically, two bights at the Width of the front end area of first linking portion are formed with respectively along with the conical surface that enlarges near a pair of flat also can.In addition, chamfering (two bights are bent into convex) being implemented in two bights also can.
According to the present invention as can be known, protuberance is set integratedly, therefore, can utilizes protuberance to increase the thickness of first linking portion, can improve the mechanical strength of first flange part at first linking portion of the flange part of bobbin.Therefore, can be under the state of the big activity coefficient of keeping the spiral conductor, prevent reel around the time the distortion or the breakage of bobbin.
Description of drawings
Fig. 1 is the front view of the motor stator of first execution mode of the present invention.
Fig. 2 is the front view of the stator core that uses in the stator shown in Figure 1.
Fig. 3 is used for illustrating the yoke of stator shown in Figure 1 being used by steel plate materials magnetic steel plate and the magnetic pole figure of the mode of magnetic steel plate punching processing.
Fig. 4 is the stereogram of the excitation spiral portion that uses in the stator shown in Figure 1.
Fig. 5 is the stereogram of the bobbin that uses in the stator shown in Figure 1.
Fig. 6 is the figure that is used to illustrate the mode of assembling stator shown in Figure 1.
It (B) is the figure that is used to illustrate the mode of assembling stator shown in Figure 1 that Fig. 7 (A) reaches.
Fig. 8 is the stereogram of the bobbin that uses in the motor stator of another embodiment of the present invention.
Fig. 9 is the stereogram of the protuberance of the bobbin that uses in the motor stator of another embodiment of the present invention.
Figure 10 is the stereogram of the protuberance of the bobbin that uses in the motor stator of another embodiment of the present invention.
Figure 11 is the stereogram of the protuberance of the excitation spiral portion that uses in the motor stator of another embodiment of the present invention.
Among the figure: the 1-motor stator; The 3-stator core; 5-excitation spiral portion; The 7-yoke; 9-field structure body; The chimeric recess of using of 7a-; 7b-pair of planar portion; 7c-pair of angled planar portions; The 13-pole; 15-magnetic pole strength formation portion; The 17-linking part; The a pair of space of 19-; The 23-bobbin; The 23a-cylindrical portion; 23b-first flange part; 23c-second flange part; The 23d-flat; 23e-first linking portion; 23f-second linking portion; The 23g-braking parts; The 23h-protuberance; 25-spiral conductor.
Embodiment
Below, with reference to accompanying drawing, embodiments of the present invention are elaborated.Fig. 1 is the front view of the motor stator of first execution mode of the present invention.As shown in this figure, this routine motor stator 1 has stator core 3 and six excitation spiral portions 5.Stator core 3 comprises as shown in Figure 2: ring-type yoke 7 and be disposed at the field structure body 9 of the inboard of ring-type yoke 7.Also have, in Fig. 2,, draw with the state that an excitation spiral portion 5 only is set for reference.Yoke 7 is stacked and constitute with magnetic steel plate 11 by the multi-disc yoke.The peripheral part of yoke 7 have circle to blocking the shape that obtains with the direction of the stacked direction quadrature of magnetic steel plate 11 with the multi-disc yoke.In addition, the truncated form of the interior perimembranous of yoke 7 has: make up orthohexagonal shape and be formed at the chimeric shapes with recess 7a of six of substantial middle on each limit of this regular hexagon shape respectively.Each is chimeric to be formed on the interior perimembranous of yoke 7 with recess 7a, and towards two direction openings of the stacked direction of multi-disc magnetic steel plate, and towards field structure body 9 openings (towards the radially inner side of yoke 7).In addition, six of the interior perimembranous of yoke 7 chimeric with recess 7a circumferential both sides, be formed with respectively and the chimeric continuous 7b of pair of planar portion of inner surface with recess 7a.The dimensions length on the limit that circumferentially extend on the edge of the 7b of this pair of planar portion equates, and is positioned at same imaginary plane.In addition, chimeric inner surface with recess 7a is by constituting with the continuous respectively pair of angled planar portions 7c of the 7b of pair of planar portion.
Field structure body 9 has: six poles 13, be arranged at pole 13 the end magnetic pole strength formation portion 15 and link six linking parts 17 of two magnetic pole strength formation portions 15 of adjacency respectively.Pole 13 upwards keeps being disposed at interval the inboard of yoke 7 in week, and has an end of yoke of being linked to 7 and be positioned at the other end of the radially inner side of this end.In this example, an end of pole 13 is made of triangular shaped protuberance 13a.Therefore, protuberance 13a has along the pair of angled face 13b of the circumferential extension of yoke 7.Also have, so that the mode of the pair of angled planar portions 7c of pair of angled face 13b and yoke 7 difference butt, protuberance 13a is entrenched in the chimeric recess 7a that uses of yoke 7, and pole 13 links with yoke 7.In this example, the circumferential length dimension along yoke 7 of inclined plane 13b is shorter than the circumferential length dimension of the 7c of clinoplain portion.Therefore, the part of pair of angled planar portions 7c is exposed in pole 13 sides, between the part and pole 13 of pair of angled planar portions 7c, forms cross section and be a pair of space 19 of the leg-of-mutton groove shape that extends along stacked direction.Magnetic pole strength formation portion 15 is arranged at the other end of pole 13, and has the magnetic pole strength 15a relative with rotor 1 in interior all sides.Also have, disposed not shown rotor by magnetic pole strength 15a area surrounded.
Field structure body 9 is identical with yoke 7, and is stacked and constitute with magnetic steel plate 21 by the multi-disc magnetic pole.A slice yoke that constitutes yoke 7 by a slice steel plate materials M is pushed, and forms its punching processing with a slice magnetic pole of magnetic steel plate 11 and magnetic poles structure 9 with magnetic steel plate 21 as shown in Figure 3.Yoke has in the inboard with magnetic steel plate 11: constitute yoke 7 planar portions 7b the planar portions formation 11a of portion and constitute the clinoplain formation 11b of portion of yoke 7 of the 7c of clinoplain portion of yoke 7.
Magnetic pole has with magnetic steel plate 21: constitute the pole formation 21a of portion of pole 13, the magnetic pole strength formation 21b of portion of magnetic poles face formation portion 15 and the binding formation 21c of portion of formation linking part 17.The pole formation 21a of portion has the 21d of inclined plane formation portion that constitutes inclined plane 13b.Also have,, cut off two 21d of inclined plane formation portion that yoke is used the adjacency of magnetic steel plate 21 with a part and the magnetic pole of two planar portions formation 11a of portion of the adjacency of magnetic steel plate 11 by pushing.After operation in, so that the mode of inclined plane formation 21d of portion and the clinoplain formation 11b of portion butt, link pole 13 and yoke 7, therefore, can be according to the mode that links, suitably set the angle θ 2 between two clinoplain formation 11b of portion of angle θ 1 between two 21d of inclined plane formation portion of adjacency and adjacency.For example, as long as make angle θ 1 and angle θ 2 roughly the same or make angle θ 1 greatly slightly, just can make pole 13 and yoke 7 closely chimeric than angle θ 2.
As Fig. 2 and shown in Figure 4, excitation spiral portion 5 comprises: formed and with the chimeric bobbin 23 of pole 13 be wound on the spiral conductor 25 of this bobbin 23 by electrical insulating material.As shown in Figure 5, bobbin 23 possesses integratedly: the cylindrical portion 23a chimeric with pole 13; Be arranged at the end of cylindrical portion 23a, and the first flange part 23b that contacts with yoke 7; Be arranged at the other end of cylindrical portion 23a, and the second flange part 23c that contacts with magnetic pole strength formation portion 15.The mutual interior surface opposing of the first flange part 23b and the second flange part 23c is extended respectively abreast.Also have, spiral conductor 25 orientations (permutation) are wound on cylindrical portion 23a.
The first flange part 23b possesses: a pair of flat 23d that contacts with the 7b of pair of planar portion of yoke 7; The first linking portion 23e that links the end separately of a pair of flat 23d; The second linking portion 23f that links the other end separately of a pair of flat 23d.Be formed with braking parts 23g at the second linking portion 23f, when its end at pole 13 (protuberance 13a) is embedded in the chimeric usefulness recess 7a fully, with yoke 7 butts.Braking parts 23g is integrally formed on the second linking portion 23f on the whole.Thereby,, improve mechanical strength because the existence of braking parts 23g makes that the thickness of the second linking portion 23f is much the same thick.In this embodiment, the outer surface of (along the both ends of the circumferential array of yoke) 23g1 is formed with circular arc (ア one Le) face (that is outer surface bending) at the both ends of braking parts 23g.
In addition, be provided with integratedly to the side-prominent protuberance 23h of yoke 7 at the first linking portion 23e.Parallel and the section shape when blocking with the orthogonal direction of stacked direction quadrature of the edge of this protuberance 23h and magnetic steel plate 21 has: with the triangle of the chimeric section shape similar shapes when described orthogonal direction blocks with recess 7a.Therefore, protuberance 23h has the outer surface that is made of two inclined plane 23h1.The section shape size of protuberance 23h has: with the chimeric substantially the same or slightly small size shape of section shape with recess 7a.Thus, protuberance 23h an end of six poles 13 of field structure body 9 be embedded in respectively six chimeric during with recess 7a, with after in the recess 7a, stretch out the outside by chimeric at the peristome of a side's of chimeric stacked direction with recess 7a direction upper shed.Its result, the outer surface that is made of two inclined plane 23h1 also exposes in chimeric outside with recess 7a.In this example, the section shape of protuberance 23h has: be embedded in chimericly during with recess 7a at an end of pole 13, make chimeric inner surface and the shape that contacts of the outer surface (pair of angled face 23h) of protuberance 23h with recess 7a.As mentioned above, between the part and pole 13 of pair of angled planar portions 7c, be formed with a pair of groove shape space 19 of extending along stacked direction, therefore, the circumferential lengths L1 along yoke 7 of the bottom of protuberance 23h (and first linking portion 23e all-in-one-piece part) is longer than the length L between a pair of flat 23d 2.
In addition, in this routine stator core 3, as shown in Figure 2, be made as R in distance with the central point C of the summit in the bight of an end of pole 13 and stator core 3, to and be T along the width dimensions of the direction of the direction quadrature that extends between the end of pole 13 and the other end, the base of the triangular shaped protuberance 13a of pole 13 and the distance of central point C are made as x, with be orthogonal to yoke 7 interior perimembranous orthohexagonal one side and through imaginary line and some one side quadrature of central point C, and the distance between the central point is made as under the situation of H N, T, has T≤2R (1-cos (π/N))/tan (relation of π/N) with R.In addition, H, x and R have the relation of H<x<R.
In this example, as described below, assembling stator 1.At first, coiling spiral conductor 25 on bobbin 23 has been made excitation spiral portion 5.Then, as shown in Figure 6, excitation spiral portion 5 is embedded on the pole 13 of field structure body 9.Thus, the second flange part 23c of bobbin 23 contacts with the magnetic pole strength formation portion 15 of field structure body 9.Then, as Fig. 7 (A) and (B), the chimeric recess 7a that uses with the protuberance 13a that has assembled the pole 13 of excitation spiral portion 5 is embedded in yoke 7 is installed on yoke 7 with the field structure body 9 that is provided with excitation spiral portion 5.When assembling, when protuberance 23h makes its a pair of inclined plane 23h1 contact with chimeric inner surface with recess 7a, after in the chimeric usefulness recess 7a, stretch out in the chimeric outside with recess 7a.At this moment, when being positioned at the 7b of pair of planar portion that forms on the inner peripheral surface of a pair of part 23i (with the continuous flat of a pair of flat 23d) and yoke 7 of the first linking portion 23e of both sides of protuberance 23h and contacting, behind the inside by yoke 7, give prominence to the outside in yoke.Under this state, the major part of the flat 23d of bobbin 23 contacts with the 7b of pair of planar portion of the part of the inner peripheral surface that constitutes yoke 7.In addition, a side butt of the end face 23g2 of pole 13 sides of braking parts 23g and yoke 7.Thus, can carry out location reliably with respect to the yoke 7 of field structure body 9.
According to this routine motor stator as can be known, since at the first linking portion 23e of bobbin 23 protuberance 23h is set integratedly, therefore, by protuberance 23h, increase by the thickness of the first linking portion 23e of the first flange part 23b, thereby can improve the mechanical strength of the first flange part 23b.Therefore, under the state of the big activity coefficient of keeping spiral conductor 25, the distortion or the breakage of the bobbin in the time of can preventing the coiling of spiral conductor 25.
Fig. 8 is the stereogram of the bobbin 123 that uses in the motor stator of another embodiment of the present invention.This routine bobbin 123 has a pair of rib 123j respectively at a pair of flat 123d, in addition, has the structure identical with bobbin shown in Figure 5 23.Therefore, added the symbol of 100 numeral on the sign digit that on the parts identical, marks among mark Fig. 5, and omitted explanation it with bobbin shown in Figure 5 23.In this embodiment, a pair of rib 123j has the shape of cross section of right-angled triangle, and an end of six poles 13 of field structure body 9 be embedded in respectively six chimeric during with recess 7a, be embedded in a pair of space 19 (with reference to Fig. 2) of the groove shape that forms between the part of pair of angled planar portions 7c and the pole 13.
Fig. 9 is the stereogram of the protuberance 223h of the bobbin 223 that uses in the motor stator of another embodiment of the present invention.Added the symbol of 200 numeral on the sign digit that on the parts identical, marks among mark Fig. 5, and omitted explanation it with bobbin shown in Figure 5 23.The section shape of protuberance 223h has: with the triangle of the chimeric section shape similar shapes when described orthogonal direction blocks with recess 7a.Yet the circumferential length L 3 of the yoke 7 of the bottom of protuberance 223h (with the first linking portion 23e all-in-one-piece part) equates with the length L 4 between a pair of flat 23d.Therefore, this routine protuberance 223h has the sectional area littler than protuberance 23h shown in Figure 5.
Figure 10 is the stereogram of the protuberance 323h of the bobbin 323 that uses in the motor stator of another embodiment of the present invention.Added the symbol of 300 numeral on the sign digit that on the parts identical, marks among mark Fig. 5, and omitted explanation it with bobbin shown in Figure 5 23.This protuberance 323h has rectangular shape.Thereby the section shape of protuberance 323h has: have than chimeric rectangular-shaped with the little sectional area of the section shape when described orthogonal direction blocks of recess 7a.
Figure 11 is the stereogram of the excitation spiral portion 405 that uses in the motor stator of another embodiment of the present invention.Added the symbol of 400 numeral on the sign digit that on the parts identical, marks among mark Fig. 5, and omitted explanation it with bobbin shown in Figure 5 23.The bobbin 423 of this excitation spiral portion 405 is formed with the conical surface 423j that enlarges along with near a pair of flat 423d respectively in two bights (bight of a pair of part 423i) of the Width of the front end area of the first linking portion 423e.Its result, the shape of front end area that comprises the protuberance 423h of the first linking portion 423e and a pair of part 423i is as described below, that is: the width dimensions on the direction of a pair of flat 423d arrangement becomes big shape gradually along with close to a pair of flat 423d from front end.If form such shape, then when the field structure body is embedded in yoke, the bight of the both sides of the front end area of the first linking portion 423e of bobbin 423 and yoke butt, thus can prevent chimeric fault.In addition, in this embodiment, conical surface 423j is the face that linearity tilts, but also can implement chamfering (two bights are bent into convex) to the bight of a pair of part 423i.

Claims (7)

1. motor stator possesses:
Stator core, it has the ring-type yoke and is embedded in the field structure body of the inboard of ring-type yoke;
A plurality of excitation spiral portion, it is arranged on the described field structure body,
Described field structure body has: a plurality of poles, its week in described yoke upwards keeps the inboard of arranged spaced in described ring-type yoke, and have the end that is attached at described yoke respectively and be positioned at the other end of the radially inner side of this end, and assemble described excitation spiral portion; A plurality of magnetic pole strength formation portion, it is separately positioned on the described other end, and has magnetic pole strength in interior all sides; A plurality of linking parts, it links the described magnetic pole strength formation of two of adjacency portion respectively,
Described yoke and described field structure body are folded by multi-disc magnetic steel flaggy respectively and are constituted,
Interior perimembranous in described yoke is formed with a plurality of chimeric recesses of using, and this is chimeric with the two direction openings of recess towards the stacked direction of described multi-disc magnetic steel plate, and towards described field structure body opening, it is chimeric respectively with a described end of described a plurality of poles,
In the described a plurality of chimeric described circumferential both sides of the interior perimembranous of described yoke with recess, be formed with respectively and the described chimeric continuous pair of planar portion of inner surface with recess,
Described excitation spiral portion comprises: the bobbin that is formed and be embedded in described pole by insulating material; Be wound on the spiral conductor of described bobbin,
Described bobbin possesses integratedly: be embedded in the cylindrical portion that described pole and described spiral conductor are reeled; Be arranged on an end of described cylindrical portion and have first flange part of a pair of flat that contacts with the described pair of planar portion of described yoke; Be arranged at the other end of described cylindrical portion and second flange part that contacts with described magnetic pole strength formation portion, described motor stator is characterised in that,
Described first flange part possesses: first linking portion that links an end separately of described a pair of flat; Second linking portion that links the other end separately of described a pair of flat, be provided with protuberance integratedly at described first linking portion, this protuberance is embedded in described a plurality of chimeric when using recess at the described end of described a plurality of poles of described field structure body, by described chimeric, reach the described chimeric outside with recess with in the recess.
2. motor stator according to claim 1, wherein,
The edge of described protuberance and section shape when with the orthogonal direction of described stacked direction quadrature blocking parallel with described magnetic steel plate is: with the described chimeric section shape similar shapes when described orthogonal direction blocks with recess.
3. motor stator according to claim 2, wherein,
The described cross sectional shape of described protuberance has: be embedded in described chimericly when using recess at the described end of described pole, make described chimeric inner surface and the shape that contacts of the outer surface of described protuberance with recess.
4. according to each described motor stator in the claim 1~3, wherein,
Described second linking portion at described first flange part has formed braking parts, when this braking parts is embedded in the described chimeric usefulness recess at a described end of described pole fully, with described yoke butt.
5. according to each described motor stator in the claim 1~4, wherein,
Described a pair of flat at described bobbin forms a pair of rib that extends respectively along the chimeric through hole of described pole,
Described chimeric described inner surface with recess is by constituting with described pair of planar portion continuous respectively pair of angled planar portions,
With in described pair of angled planar portions be embedded between the described end of described chimeric described pole with recess, the described a pair of rib that forms described bobbin is the mode in chimeric a pair of space respectively, determines the size of described pair of angled planar portions.
6. according to each described motor stator in the claim 1~5, wherein,
The front end area of described first linking portion has: the width dimensions of the direction that described a pair of flat is arranged becomes big shape gradually along with close to described a pair of flat from front end.
7. motor stator according to claim 6, wherein,
Two bights at the described Width of the described front end area of described first linking portion are formed with the conical surface that enlarges along with near described a pair of flat respectively.
CN2008100090939A 2007-02-13 2008-02-13 Stator for motor Active CN101247054B (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2007031918 2007-02-13
JP2007031918 2007-02-13
JP2007-031918 2007-02-13
JP2008029187 2008-02-08
JP2008-029187 2008-02-08
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