CN101821921B - Stator arrangement for simplified assembly of electric motor, and method for producing such stator arrangement - Google Patents
Stator arrangement for simplified assembly of electric motor, and method for producing such stator arrangement Download PDFInfo
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- CN101821921B CN101821921B CN2008801106330A CN200880110633A CN101821921B CN 101821921 B CN101821921 B CN 101821921B CN 2008801106330 A CN2008801106330 A CN 2008801106330A CN 200880110633 A CN200880110633 A CN 200880110633A CN 101821921 B CN101821921 B CN 101821921B
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- thin sheet
- tooth
- sheet element
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- 238000004519 manufacturing process Methods 0.000 title description 4
- 238000005452 bending Methods 0.000 claims description 34
- 238000000034 method Methods 0.000 claims description 13
- 210000000515 tooth Anatomy 0.000 claims description 7
- 238000010030 laminating Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 4
- 238000004080 punching Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
- H02K1/148—Sectional cores
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention relates to a stator arrangement (2) for an electric motor, comprising a stator body, and at least one stator tooth (3) arranged on the stator body and oriented towards an inner recess which is formed about a central axis and used to receive a rotor arrangement (9) in a rotationally mobile manner. The stator teeth (3) are respectively offset parallel to a radial direction defined by the central axis.
Description
Technical field
The present invention relates to a kind of stator apparatus, it is particularly useful for the direct current machine of small-sized permanent-magnet-field.
Background technology
The direct current machine of permanent-magnet-field has stator apparatus usually, and stator coil is positioned on this stator apparatus.Stator coil arranges round one or more stator tooths, and by suitable coiling technology, is arranged on stator tooth.The shortcoming of this structure is to make effort, and especially in the little motor of construction size, the groove plot ratio of stator apparatus is very poor, and reason is, the quantity of the copper cash that can be wound around around stator tooth is restricted.By this way, can only form all very low motors of power density and efficiency.
Summary of the invention
Therefore the objective of the invention is, a kind of stator apparatus and a kind of method of making stator apparatus are provided, wherein stator apparatus forms like this, makes motor have higher power density and the efficiency of Geng Gao.
This purpose is by by stator apparatus claimed in claim 1, being achieved, and method described by the claim by arranged side by side, that be used for making this stator apparatus is achieved.
Other favorable structure scheme of the present invention has been described in the dependent claims.
, according to the first angle, be provided with the stator apparatus for motor.This stator apparatus comprises stator body and one or more stator tooth that is arranged on stator body, and described stator tooth points to the internal cavities that forms round central axis and hold rotor arrangement with being used for rotatable motion.Described stator tooth is parallel to respectively the radial direction of being determined by described central axis and is offset with certain amount of bias.
Above-mentioned stator apparatus can make stator tooth setting stator tooth boots separately, and can not compare with the width of stator tooth the width of the free end that strengthens stator tooth.Therefore, can prefabricated coil be placed on stator tooth in simple mode, thereby can avoid directly loaded down with trivial details ground winding around element on stator tooth.
In addition, stator tooth also can be transverse to the direction skew of described central axis.
The end of pointing to freely described internal cavities of stator tooth can form respectively section's section of the inner surface of described internal cavities.
By a kind of embodiment, stator tooth has the profile of pointing to described central axis, and wherein this profile is recessed and has the inside radius suitable with the inside radius of described internal cavities, and its central point is positioned on described central axis.
Wherein the amount of bias of at least one stator tooth especially can be selected like this, and namely section's section of the described inner surface that consists of stator tooth is extended on the stator tooth boots angle of predesignating with respect to described central axis.
In addition, stator body relatively vertically is provided with a plurality of stator side with the cross section surface that described central axis extends polygonally, and wherein stator tooth stretches into the inside of described stator apparatus with the position of described amount of bias skew at the center with respect to described stator side from stator side.
By another angle, the stator that is used for motor is provided with above-mentioned stator apparatus, and wherein stator tooth is surrounded by coil part respectively.By the opposing party's angle, motor is provided with above-mentioned stator and rotor arrangement, and this rotor arrangement is arranged in described internal cavities.
By another angle, stipulated a kind of method that is used for making for the stator of motor, wherein stator has one or more stator tooths that are arranged on stator body, and described stator tooth points to the internal cavities that forms round central axis and hold rotor arrangement with being used for rotatable motion.The method comprises following steps: the stator component that is connected with each other by the bending connecting portion is provided, and they have respectively stator tooth, and wherein said stator tooth is parallel to respectively the radial direction of being determined by described central axis and is offset with certain amount of bias; To stator tooth setting coil part separately; Round bending connecting portion rotation stator component, thereby the end of the stator component that is connected with each other is reclined mutually, and stator tooth point to the internal cavities of the stator that so forms from stator component.
Especially can comprise such step, the stator component that is connected with each other by the bending connecting portion namely is provided, they have respectively stator tooth; Thin sheet element is made by that be connected with each other via bending part, the local section section that have respectively the stator teeth section of some; And, described thin sheet element is stacked up, so that the stator component setting stator tooth separately that is connected with each other by the bending connecting portion.
Description of drawings
Below by accompanying drawing, the preferred embodiments of the present invention have at length been set forth.Wherein:
Fig. 1 has illustrated the motor by prior art in transverse sectional view;
Fig. 2 shows the part of the transverse sectional view of Fig. 1;
Fig. 3 shows motor, and it has the stator apparatus by embodiments of the invention;
Fig. 4 shows the part of the transverse sectional view of Fig. 3;
Fig. 5 shows the method state when making stator;
Fig. 6 shows the other method state when making the stator that is used for motor;
Fig. 7 shows thin sheet element to be punched layout in blanket, is used for reducing cutting clout amount;
Fig. 8 shows in being used for being stacked into the state of stator apparatus fully, the structure of the junction of the end of thin sheet element;
Fig. 9 shows the part of stator apparatus, and it has mounted coil part;
Figure 10 a and 10b show the punching press shape of the bending connecting portion of thin sheet element, are used for forming stator apparatus;
Figure 11 has illustrated another embodiment of motor in transverse sectional view;
Figure 12 shows a kind of method state, is used for motor configuration stator apparatus into Figure 11;
Figure 13 shows the other method state, is used for motor configuration stator into Figure 11;
Figure 14 shows thin sheet element to be punched layout in blanket, is used for motor configuration stator apparatus into Figure 11;
Figure 15 shows the connection of the end of stacking thin sheet element, and thin sheet element is bent into the stator apparatus for the motor of Figure 11;
Figure 16 shows the part by the transverse sectional view of the stator apparatus of the motor of Figure 11, and it has coil part, and this coil part forms like this, namely is used for simplifying being bent into stator apparatus;
Figure 17 a and 17b show the structure of the bending part section of thin sheet element, are used for making thin sheet element more easily to be bent into the stator apparatus of the motor of Figure 11;
Figure 18 shows the contrast of torque ripple, and this relates to by the motor of prior art with by the motor of Fig. 3.
Embodiment
Fig. 1, take brshless DC motor two-phase, four grooves, sextupole as example, shows traditional motor.Direct current machine has the stator 2 of annular, and this stator 2 has four and points to inner stator tooth 3, and this stator tooth 3 has respectively the stator tooth boots 4 that are arranged on above it.Between the stator tooth 3 or zone between stator tooth boots 4 is the groove zone, and coil windings is arranged in this groove zone 5 usually.For this reason, coil part 6 arranges round stator tooth 3, and this coil part 6 is delivered to magnetic field by stator tooth boots 4 respectively the inside of stator 2.For fear of by stator 2, making short circuit between coil part 6, be provided with slot liner body 7 between coil part 6 and stator 2, this slot liner body 7 preferably covers on the whole inner surface of stator 2, except stator tooth boots 4.Rotor arrangement 9 with axle 8 extends in the inside of stator 2, and permanent magnet 10 (being six permanent magnets in the present embodiment) is arranged on this rotor arrangement 9.Rotor arrangement 9 is columniform basically, and the stator tooth boots 4 of four stator tooths 3 are corresponding to the outer surface of rotor arrangement 9 and moulding, therefore forms the essentially identical air gap 11 of shape between the outer surface of stator tooth boots 4 and rotor arrangement 9.
Fig. 2 has illustrated the transverse sectional view of Fig. 1 in cross section.In this cross section, show the stator tooth boots angle θ based on the central axis of the axle 8 of rotor arrangement 9
SWith magnetic pole angle θ
M, this magnetic pole angle θ
MRefer to such angle, i.e. the angle that occupied by permanent magnet of this central axis with respect to the axle of described rotor arrangement.Can see the width W of stator tooth boots 4
SGreater than 6 width W around the stator tooth 3 that arranges of coil
TTherefore, can utilize better permanent magnet.But shortcoming is that coil must directly be wrapped on stator tooth 3, and, because the width of stator tooth boots 4 is larger, can not be set with prefabricated coil part on stator tooth 3.
Stator tooth boots angle θ
SPreferably be equal to or greater than magnetic pole angle θ
MIn an illustrated embodiment, θ
SBe 67 ° (being 201 ° aspect electric) in mechanical aspects, at mechanical aspects θ
M=60 ° (being 180 ° aspect electric).W
SORefer to the width of channel opening.
Fig. 3 shows motor, and it has the stator apparatus by embodiments of the invention.In this and subsequently embodiment, identical Reference numeral represents identical or similar function.
Different from the stator apparatus of Fig. 1, the stator apparatus 2 in Fig. 3 does not have circular cross section, but polygonal.In an illustrated embodiment, it be constitute dimetric.Stator apparatus 2 has four stator tooths 3, they with respect to the central axis M of the internal cavities of described stator apparatus 2 perpendicular to radial direction (based on described central axis M) and perpendicular to the axial direction arranged offset of described central axis M.The central axis M of stator apparatus 2 is determined by the profile of described internal cavities and stator tooth boots 4.Central axis M also determines the rotation of rotor arrangement 9, and this rotor arrangement 9 is inserted into maybe and can inserts in stator apparatus 2.
Perpendicular to radial direction (based on described central axis) and perpendicular to the axial direction of described central axis, stator tooth boots 4 correspondingly are provided with such profile due to stator tooth 3, and namely the inside radius of the internal cavities of this profile and stator apparatus 2 is suitable.Therefore, stator tooth boots angle θ
SCan correspondingly increase, and needn't increase with respect to the width of stator tooth 3 width (Fig. 4) of stator tooth boots 4., for recessed profile,, corresponding to the radius of the internal cavities of stator apparatus 2, according to the height from the radial direction biasing, draw stator tooth boots angle θ
STherefore, from the amount of bias of radial direction, can so select, namely stator tooth 3 needn't be expanded in order to form stator tooth boots 4, in order to obtain the stator tooth boots angle θ of expectation
STherefore, can greatly simplify the installation of stator.
The structure of stator apparatus 2 is quadrangle or square substantially, and this can make prefabricated coil part 6 be enclosed within on stator tooth 3.Coil part 6 is placed on the coil retainer 15 of insulation, and this coil retainer 15 is columniform profile substantially.This coil retainer 15 is provided with and keeps limit, with the circle circle of avoiding coil part 6, from columniform profile, slips away.The coil retainer 15 of insulation can be profile circular, polygonal or other form with respect to described cylinder axis, wherein the cross section of the internal cavities of coil retainer 15 is equivalent to the cross section of the stator tooth 3 of stator apparatus 2 substantially, so coil part 6 can be enclosed within on stator tooth 3.
Fig. 5 shows, the first method state when making the stator apparatus 2 of the embodiment that presses Fig. 3.Stator apparatus 2 preferably consists of thin sheet element, and they overlap the to each other lamination or are stacked.The sheet material that this thin sheet element preferably consists of soft magnetic material, the shape shown in they are cut or strike out.Thin sheet element has shape shown in Figure 5.Each thin sheet element has four L shaped local section sections 20, and they are connected with each other by bending connecting portion 21, to form microscler structure.
This local section section 20 has respectively shorter side 22 and long side 23.Long side 23 is respectively arranged with a stator teeth section 24, this stator teeth section 24 substantially is vertical and along the identical direction of the local section section 22 with shorter, from long side 23, holds up with long local section section 23, so each stator teeth section 24 is all pointed to identical direction under initial condition.Stator teeth section 24 is provided with the end profile of inclination on its free end, this end profile is recessed, its trend is substantially suitable with the radius of the internal cavities to be formed of stator apparatus, that is to say, it has such radius, and namely the air gap sum of the radius of this radius and rotor arrangement 9 and the expectation between rotor arrangement 9 and stator tooth boots 4 is suitable.Due to stator tooth to be formed 3 from the radial direction by desirably the biasing, so the end profile of stator teeth section 24 has gradient with respect to the extension size of described local section section 20, this gradient depends on the stator tooth boots angle θ of size, inside radius and the expectation of described biasing
SRelevant.
A plurality of be stacked by thin sheet element shown in Figure 5 after, coil part 6 is sleeved on stator tooth 3.And then, as shown in Figure 6, stacking thin sheet element at bending connecting portion 21 with the relative rotation of free end, thereby form the stator 2 (Fig. 3) of motor to be manufactured.The profile of stator tooth boots 4 is to form like this, and namely internal cavities has to hold the inside radius of rotor arrangement 9 basically.
Reduce as much as possible spillage of material when making thin sheet element (from the sheet material upper punch, pressing out), thin sheet element can be like this from blanket cutting (punching press) out, and namely corresponding thin sheet element is intermeshing.Being arranged in this and can selecting like this between two adjacent thin sheet element, namely the stator teeth section 24 of thin sheet element stretches into respectively in intermediate space between the less side 22 of stator teeth section 24 and another thin sheet element.Therefore, when a plurality of thin sheet element of punching press from blanket, can make as much as possible spillage of material keep minimum.
, if stator apparatus 2 is stacking and be bent into stator 2 by method step shown in Figure 6, figure 8 illustrates and how stator apparatus 2 can be fixed.Thin sheet element preferably is provided with chamfering on its end 25, thereby forms weld groove 30.Weld seam 31 is arranged in this weld groove 30, in order to two ends 25 of thin sheet element are connected with each other.
When single local section section 20 when being contained in coil part 6 on stator tooth 3 and closing up, free bight 32 for fear of coil part 6 is not hooked by the profile on the end of stator tooth, can stipulate, the related free bight 32 of coil 6 is chamfering (Fig. 9), therefore when last local parts 20 bending of stacking thin sheet element, the end of corresponding stator tooth 3 not can with corresponding bight 32 hooks of coil part 6, thereby cause installation more difficult.
Bending connecting portion 21 before local section section 20 bendings of stacking thin sheet element has been shown in Figure 10 a, Figure 10 b shows the bending connecting portion after section 20 bendings of local section, is used for making stator apparatus 2.Can see, this bending connecting portion 21 has narrow contact pin 41, and this contact pin 41 is each other the local section section 20 that angle arranges (i.e. the larger side 23 of the less side 22 of a local section section 20 and adjacent local section section 20) with two and is joined to one another.Bending connecting portion 21 with the opposed side of contact pin on, be provided with breach 42, it has notch 43 on the end towards contact pin 41, therefore when side 22,23 bending, the material of thin sheet element can not extruded in the mode of not expecting.Less side 22 and larger side limit 23 (at first they be orthogonal basically) are such bendings when making stator apparatus 2, namely they extend basically on straight direction, as shown in Figure 10 b.This breach 42 is because bending disappears, and the side of breach 42 reclines mutually,, so notch 43 diminishes, and avoids thin sheet element to be out of shape in the mode of not expecting when bending.
Figure 11 illustrates another embodiment of the present invention, it is compared with the embodiment of Fig. 3, and difference only is that the structure of stator apparatus 2 changes.For this reason, being used for forming the thin sheet element by the stator apparatus 2 of the motor of Figure 11, is different from the thin sheet element that is used for forming by the stator apparatus 2 of the motor of Fig. 3.Thin sheet element has the local section section 50 of T shape, and wherein local section section 50 is straight, stretches out the stator teeth section 51 that goes out as shown in figure 12 from local section section 50, and its trend with local section section 50 is substantially vertical.Stator teeth section 51 in the off-centring with local section section 50 hold up from local section section 50 on the position of described side-play amount (stator tooth with this side-play amount from skew in the radial direction).Be set with upper coil 5 (as in conjunction with shown in Figure 5) after (punching press) on stacking thin sheet element through cutting, and as shown in figure 13 the same and then, make local section section 50 in they bending connecting portion so mutual rotations in 52 places separately, make stator tooth 3 point to the inside of the stator that so forms after bending.
Figure 14 illustrates the layout of thin sheet element, it should be stamped to form by blanket.Every two thin sheet element arrange opposed to each other, corresponding stator teeth section 51 be engaged with each other (as shown in Fig. 7) wherein, be that the stator teeth section 51 of one of them thin sheet element is between two stator teeth sections 51 of the thin sheet element of relatively putting, to reduce the cutting clout amount that produces at the dicing sheet element.
For when constructing stator apparatus, the end of stacking thin sheet element is connected with each other, the end 53 of thin sheet element can be preferably chamfering, therefore form solder side 60 (Figure 15), weld seam 61 can be applied on this solder side 60, in order to stacking thin sheet element is connected into a stator apparatus enduringly.
Each simplify the manufacturing of stator, (can be similar with the embodiment of Fig. 9) have been described in Figure 16, coil part 16 has the bight 54 of chamfering, in order to can avoid the mutual hook of adjacent windings element 6 when last local section of upset section 50, so that structure is by the stator apparatus 2 of embodiment shown in Figure 11.
Figure 17 at length shows the structure of thin sheet element on corresponding bending part section 52.Figure 17 a shows the bending connecting portion 52 under bending state not.Figure 17 b shows the bending connecting portion 52 under bending state.This bending part section 52 has contact pin 55, and this contact pin 55 consists of breach 56 and the notch 57 that is arranged on breach 56 tips, and when local section section 50 was crooked, the lateral edge of contact pin 55 and breach 56 was docked basically.Notch 57 has been avoided extruding of material, for example towards plane of bending, vertically extrudes.
Figure 18 illustrates torque ripple, based on the mechanical angle of the motor to pressing Fig. 3 (the present invention) or Fig. 1 (prior art).Can see, torque can significantly be risen, because motor has by stator apparatus of the present invention, so it has than the higher groove plot ratio of prior art and the power density of Geng Gao.In addition, can greatly simplify the manufacturing of this motor.
Claims (9)
1. stator apparatus (2) that is used for motor, it comprises:
-stator body;
-one or more stator tooths (3) that are arranged on stator body, described stator tooth (3) point to form round central axis and be used for rotatable motion ground and hold the internal cavities of rotor arrangement (9),
-wherein, described stator tooth (3) is parallel to respectively the radial direction of being determined by described central axis and is offset with certain amount of bias,
It is characterized in that, described stator body is provided with a plurality of stator side (20) based on the cross section surface of perpendicular to described central axis, extending polygonally, wherein stator tooth (3) extend into the inside of described stator apparatus (2) with the position of described amount of bias skew at the center with respect to described stator side (20) from stator side (20), each thin sheet element, the local section section that form described stator side (20) that have wherein formed in the thin sheet element of described stator apparatus (2) are connected with each other by the bending connecting portion
Wherein thin sheet element is provided with chamfering on its end (25), this thin sheet element stacking and be bent into the state of stator in form weld groove (30), weld seam (31) is arranged in this weld groove (30), in order to two ends (25) of thin sheet element are joined to one another.
2., by stator apparatus claimed in claim 1, it is characterized in that, described stator tooth (3) is transverse to the direction skew of described central axis.
3., by the described stator apparatus of claim 1 or 2, it is characterized in that, the end of pointing to freely described internal cavities of described stator tooth (3) forms respectively section's section of the inner surface of described internal cavities.
4. by stator apparatus claimed in claim 3, it is characterized in that, described stator tooth (3) has the profile of pointing to described central axis, and wherein this profile is recessed and has the inside radius suitable with the inside radius of described internal cavities, and its central point is positioned on described central axis.
5. by stator apparatus claimed in claim 3, it is characterized in that, the amount of bias of at least one stator tooth in described stator tooth (3) is selected like this, i.e. the stator tooth boots angle (θ that predesignating with respect to described central axis of section's section of the described inner surface that consists of stator tooth (3)
S) the upper extension.
6. stator that is used for motor, it is provided with by the described stator apparatus of any one in claim 1 to 5 (2), and wherein stator tooth (3) is surrounded by coil part (6) respectively.
7. motor, it has rotor arrangement and by stator claimed in claim 6, described rotor arrangement is arranged in internal cavities.
8. method that is used for making for the stator of motor, this stator has one or more stator tooths (3) that are arranged on stator body, described stator tooth points to the internal cavities that forms round central axis and hold rotor arrangement with being used for rotatable motion, wherein said stator body is provided with a plurality of stator side (20) based on the cross section surface of perpendicular to described central axis, extending polygonally, wherein stator tooth (3) stretches into the inside of described stator with a kind of position of amount of bias deflection at the center with respect to described stator side from stator side (20), the method comprises following steps,
-stator component that is connected with each other by the bending connecting portion, form described stator side (20) is provided, described stator component has respectively stator tooth (3), and wherein said stator tooth (3) is parallel to respectively the radial direction of being determined by described central axis and is offset with certain amount of bias;
-to stator tooth setting coil part (6) separately;
-make stator component deflection round described bending connecting portion, thus the end of the stator component that is connected with each other is reclined mutually, and stator tooth (3) points to the internal cavities of the stator that so forms from stator component,
-by that be connected with each other via bending part (21), the local section section that form described stator side (20) of the some element of laminating, described local section section has respectively the stator teeth section; And,
-described thin sheet element is stacked up, to form the stator component with stator tooth (3) separately that is connected with each other by the bending connecting portion,
Wherein thin sheet element is provided with chamfering on its end (25), this thin sheet element stacking and be bent into the state of stator in form weld groove (30), weld seam (31) is arranged in this weld groove (30), in order to two ends (25) of thin sheet element are joined to one another.
9., by method claimed in claim 8, it is characterized in that, thin sheet element so is stamped to form by blanket, makes corresponding thin sheet element chimeric each other.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007048270.3 | 2007-10-08 | ||
| DE200710048270 DE102007048270A1 (en) | 2007-10-08 | 2007-10-08 | Stator assembly for simplified assembly of an electrical machine and method for producing such a stator assembly |
| PCT/EP2008/061518 WO2009047053A1 (en) | 2007-10-08 | 2008-09-02 | Stator arrangement for the simplified assembly of an electric motor, and method for producing such a stator arrangement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101821921A CN101821921A (en) | 2010-09-01 |
| CN101821921B true CN101821921B (en) | 2013-11-20 |
Family
ID=39769494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008801106330A Expired - Fee Related CN101821921B (en) | 2007-10-08 | 2008-09-02 | Stator arrangement for simplified assembly of electric motor, and method for producing such stator arrangement |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2198498A1 (en) |
| CN (1) | CN101821921B (en) |
| DE (1) | DE102007048270A1 (en) |
| WO (1) | WO2009047053A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11515743B2 (en) | 2018-11-29 | 2022-11-29 | Milwaukee Electric Tool Corporation | Motor winding design for an electric motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1159556B (en) * | 1962-04-03 | 1963-12-19 | Danfoss As | Arrangement of the poles and mounting of the pole coils in the stator for electrical machines with single poles |
| DE2015018A1 (en) * | 1970-03-28 | 1971-10-21 | Electronics Corp Of India Ltd | Stand assembled from segments |
| DE4140245A1 (en) * | 1991-12-06 | 1993-06-09 | Alcatel Sel Aktiengesellschaft, 7000 Stuttgart, De | Brushless DC motor for high speed printer paper feed - has rotor provided by non-magnetic sleeve enclosing permanent magnet adhered to sleeve inside wall |
| US6121711A (en) * | 1993-11-08 | 2000-09-19 | Mitsubishi Denki Kabushiki Kaisha | Rotary motor and production method thereof, and laminated core and production method thereof |
| CN1571242A (en) * | 2003-04-25 | 2005-01-26 | 日本电产株式会社 | Motor |
-
2007
- 2007-10-08 DE DE200710048270 patent/DE102007048270A1/en not_active Withdrawn
-
2008
- 2008-09-02 EP EP08803494A patent/EP2198498A1/en not_active Withdrawn
- 2008-09-02 WO PCT/EP2008/061518 patent/WO2009047053A1/en active Application Filing
- 2008-09-02 CN CN2008801106330A patent/CN101821921B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1159556B (en) * | 1962-04-03 | 1963-12-19 | Danfoss As | Arrangement of the poles and mounting of the pole coils in the stator for electrical machines with single poles |
| DE2015018A1 (en) * | 1970-03-28 | 1971-10-21 | Electronics Corp Of India Ltd | Stand assembled from segments |
| DE4140245A1 (en) * | 1991-12-06 | 1993-06-09 | Alcatel Sel Aktiengesellschaft, 7000 Stuttgart, De | Brushless DC motor for high speed printer paper feed - has rotor provided by non-magnetic sleeve enclosing permanent magnet adhered to sleeve inside wall |
| US6121711A (en) * | 1993-11-08 | 2000-09-19 | Mitsubishi Denki Kabushiki Kaisha | Rotary motor and production method thereof, and laminated core and production method thereof |
| CN1571242A (en) * | 2003-04-25 | 2005-01-26 | 日本电产株式会社 | Motor |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102007048270A1 (en) | 2009-04-09 |
| EP2198498A1 (en) | 2010-06-23 |
| CN101821921A (en) | 2010-09-01 |
| WO2009047053A1 (en) | 2009-04-16 |
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