CA2215790C - Plate for electrodynamic machines - Google Patents
Plate for electrodynamic machines Download PDFInfo
- Publication number
- CA2215790C CA2215790C CA002215790A CA2215790A CA2215790C CA 2215790 C CA2215790 C CA 2215790C CA 002215790 A CA002215790 A CA 002215790A CA 2215790 A CA2215790 A CA 2215790A CA 2215790 C CA2215790 C CA 2215790C
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- CA
- Canada
- Prior art keywords
- radially
- legs
- arms
- slot
- free end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000005520 electrodynamics Effects 0.000 title claims abstract description 9
- 238000004804 winding Methods 0.000 claims abstract description 55
- 238000005452 bending Methods 0.000 claims abstract description 12
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 239000011810 insulating material Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 description 7
- 230000004907 flux Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005476 soldering Methods 0.000 description 3
- 230000008774 maternal effect Effects 0.000 description 2
- WYUYEJNGHIOFOC-VVTVMFAVSA-N 2-[(z)-1-(4-methylphenyl)-3-pyrrolidin-1-ylprop-1-enyl]pyridine;hydrochloride Chemical compound Cl.C1=CC(C)=CC=C1C(\C=1N=CC=CC=1)=C\CN1CCCC1 WYUYEJNGHIOFOC-VVTVMFAVSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 101150039322 outE gene Proteins 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
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
-
- 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
-
- 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
Landscapes
- Power Engineering (AREA)
- Engineering & Computer Science (AREA)
- Manufacture Of Motors, Generators (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Warping, Beaming, Or Leasing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Control Of Linear Motors (AREA)
- Selective Calling Equipment (AREA)
- Windings For Motors And Generators (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
The invention relates to a disc (10) for the magnetic circuit of an electrodynamic motor with a central opening (12) and segments (14, 16) disposed about said opening (12), said segments having radially aligned legs (18, 20) and if necessary peripherally-extending arms (22, 25), said legs defining winding grooves (30) radially accessible from the exterior with openings (32) formed in the region of the free radial ends of the legs (20)- The openings (32) may be closed by bending the legs (18, 20) and/or the arms (22, 24) (Figure 1).
Description
PLATE FOR ELECTRODYNAMIC MACHINES
This invention relates to a disc for the magnetic circuit of an electrodynamic motor.
Such discs arE~ for example disclosed in the Japanese Patent Application 5-236682 and are used for manufacturing a plate packet for electrodynamic motors constructed from a plurality of annular sheet metal discs. In the known case the openings are disposed in the region of the radial ends of the legs and are enclosed by means o:f an enclosed right with projections.
This has the disadvantage that the rings occupy additional space and on the other hand must be separately connected with each disc. A similar situation obtains with discs as described in US-A-5 187 858. Therein is disclosed a stator packet for electrodynamic motors whose openings are c:entra:Lly formed and are enclosed by means of a cylinder,. Rad:ially, the winding grooves have openings for t:he magnetic flux. In this way the magnetic flux is clear7_y improved.
, CA 02215790 1999-12-O1 Proceeding from the above prior art, the object underlying th<~ invention is to provide assistance here.
Therefore, this invention seeks to provide a disk for the magnetic circuit of an electrodynamic motor, comprising:
(i) a central opening having a diameter, (ii) a plurality of legs extending radially from said central opening and being peripherally spaced from each other, (iii) even alternate ones of said legs each formed with outE:r arms, said arms peripherally extending in opposite direcl~ions from each other, (iv) odd alternate ones of said legs each having a radially outer free end, (v) each of said outer arms having a peripheral free end for forming a slot between the peripheral fee end and an adjacent radially outer free end adjacent to alternate ones of said peripheral free ends, (vi) a winding groove disposed between each leg, each of ~>aid winding grooves being accessible from the outside through said slot, and (vii) (a) the radially outer free ends each of said odd alternate legs having groove dividing said free end into two radially outward extending parts for bending each such outward extending part toward an adjacent end of said peripheral free end of an adjacent outer arm for closing the slot, or (b) the peripherally free ends of each leg being bendable toward an adjacent radially outer free end for closing the slot.
This invention relates to a disc for the magnetic circuit of an electrodynamic motor.
Such discs arE~ for example disclosed in the Japanese Patent Application 5-236682 and are used for manufacturing a plate packet for electrodynamic motors constructed from a plurality of annular sheet metal discs. In the known case the openings are disposed in the region of the radial ends of the legs and are enclosed by means o:f an enclosed right with projections.
This has the disadvantage that the rings occupy additional space and on the other hand must be separately connected with each disc. A similar situation obtains with discs as described in US-A-5 187 858. Therein is disclosed a stator packet for electrodynamic motors whose openings are c:entra:Lly formed and are enclosed by means of a cylinder,. Rad:ially, the winding grooves have openings for t:he magnetic flux. In this way the magnetic flux is clear7_y improved.
, CA 02215790 1999-12-O1 Proceeding from the above prior art, the object underlying th<~ invention is to provide assistance here.
Therefore, this invention seeks to provide a disk for the magnetic circuit of an electrodynamic motor, comprising:
(i) a central opening having a diameter, (ii) a plurality of legs extending radially from said central opening and being peripherally spaced from each other, (iii) even alternate ones of said legs each formed with outE:r arms, said arms peripherally extending in opposite direcl~ions from each other, (iv) odd alternate ones of said legs each having a radially outer free end, (v) each of said outer arms having a peripheral free end for forming a slot between the peripheral fee end and an adjacent radially outer free end adjacent to alternate ones of said peripheral free ends, (vi) a winding groove disposed between each leg, each of ~>aid winding grooves being accessible from the outside through said slot, and (vii) (a) the radially outer free ends each of said odd alternate legs having groove dividing said free end into two radially outward extending parts for bending each such outward extending part toward an adjacent end of said peripheral free end of an adjacent outer arm for closing the slot, or (b) the peripherally free ends of each leg being bendable toward an adjacent radially outer free end for closing the slot.
It is recognised that the invention is achieved when a disc is involved in which the openings for winding are disposed asymmetrically with respect to the winding grooves, and are foamed in the region of the free ends of the radially aligned legs. The respectively peripherally extending leg or th~~ radially extending arm in this case are made of flexible material, e.g. steel, and after winding of the stator packet may be bent so that the grooves are c7_osed. Thus rings are unnecessary. In addition, the external dimensions of the stator are reduced at least by the radial thickness of the ring.
The ends of tree arms facing one another and of the legs may in addition be connected e.g. by welding or soldering.
Consequently, a substantial advantage of the measures proposed consi.stS 1T1 the reduction of individual parts, 2a ntinimi.sation of the external dimensions of the stator packet and a s~.mpler assembly and winding of said stator packet.
For ofter formation of the statoz packet the winding grooves are preferably clad with insulating maternal, ~.n one single process step. The stator packet is then automatically wound az~d f~.naily the Openings for w~.nding are closed by bending the legs and/or the arms. zf necessary, the ends facing one another of the ends and of the arms rnay be rigidly connected tc~gethez~, e.g. by welding, soldering, gluing or the like. This procedure is technically much easier to realise than it is to provide the stator packet with a common zing oz' separate rings by means of which the openings are conventionally closed. During cladding of the Winding grooves, simultaneously hollow shafts disposed axially on 1S the ends may be injectzan moulded on, by means of which winding is simplified. For such purposes insulating matexial is regularly used which hardens after the injection procefis, but does not appreciab~.y influence the magnetic flux. Finally, in order to improve the magnetic flux, the 2s central opening of the discs may be enlarged in such a way that no further metallic barrier exists between the opting and the respective winding grooves, which could impair the magnetic flti~c. zn this case mutually adjacent segments are Field together by the insulation maternal. After winding, t:he user obtains a wound stator packet z~eady for use, all manufacturirxg stages, starting with stamping of the discs and terminat~.ng with enlargemeizt of the internal diameter of t:he opening, being capable of being carried out automatically.
I'v'urther appropriate and advantageous developmezzts of the ~ Zo invention. will become apparent from the sub-claims.
Tn a particularly appropriate development, the arms and/or t-he legs are made of flexible materials. By means of these measures, the winding grooves of the discs, Combined to z5 form a packet, may He entirely enclosed e.g. by welding. A
disc is obtained in which the winding grooves are closed and 'thus the rigidity of the disc considerably increased.
zn a further appropriate development of the invention, the 20, openings are in the form of radially extending slots, enabling s;_m=le winding of the discs. Furthermore, the radially~~aligned legs are slotted in their inner area. Hy tthese measures, contacting of the ends .acing one another of the legs and of the arms may be simply achieved. zn a further appropriate development, the peripherally extending .arms have predetermined bending points. These measures also enable a rapid connection between the terminal parts of the legs and arms.
In a particularly appropriate development of the invention, the peripherally extending arms each comprise two legs, i0 between which is respectively fbrmed a slot, the outer leg being bendable towards the inner leg, closing the opening.
Thus it is appropriate if the slot tapers in an inward direction_ Tntithin the scope of this inventive idea, it is particularly advantageous if predetermined bending points are formed for the outer legs in the region of connection of the legs; and if, in the bent condition of the outer legs, said outer legs may be positively connectable together both with the inner legs and with the radially aligned legs, which taper towards their free ends, forming a duct for a weld seam. This measure means that the shape of the winding groove is not changed, not even when tale outer legs. have 5' been bent_ Therefore damage to the winamg wires cannot occur_ In another appropriate development o~ the invention, the winding gi:ooves axe coated with. insulating material, said winding grooves merging into grooves filled with insulating material on the radial side, and which extend as far as the opening. These measures achieve an electrically contact-free connection between the winding wire and the dlsc_ zn a ,' z0 particul~~ly appropriate development of the invention, the grooves tilled with insulating material respectively operationally connecC to adjacent segments. By means of this measure the magnetic flux flows from the winding grooves into the opening unhindered_ The invention also relates to a method of manufacturing such discs. zn this case the procedure is such that firstly a disc blanx is produced with winding grooves and if necessary grooves. Thereupon the discs are Combined to form a stator plate packet and the winding grooves and grooves are covered or f~.lled with suitable insulating material and wound. The diameter of the central opening is also enlarged so that the annular ureb nolding the segments togettmr is eliminated, and the grooves covered with insulating material. which are ~areferably rectangular in cross-section, extend as far as the opening. Finally, the ends facing one another of the S arms and of the legs are connected by being bent together.
Some embodiments of the invention given by way of eacample are shown diagrammatically in the drawing and will be explained in more detail in the following. Shown are:
I. 0 Figure 1= a disc blank;
Figure 2: the disc shown in Figure 2 with winding grooves covered with ~.nsulating mate_r~.al;
~. 5 Figure 3: the disc shown in Figuz'e 2 with wound winding grooves;
Figure 4: the disc shown in Figure 3, the ands facing one 20 another of the legs and aims be~.ng disposed relative to one another without spacing;
The ends of tree arms facing one another and of the legs may in addition be connected e.g. by welding or soldering.
Consequently, a substantial advantage of the measures proposed consi.stS 1T1 the reduction of individual parts, 2a ntinimi.sation of the external dimensions of the stator packet and a s~.mpler assembly and winding of said stator packet.
For ofter formation of the statoz packet the winding grooves are preferably clad with insulating maternal, ~.n one single process step. The stator packet is then automatically wound az~d f~.naily the Openings for w~.nding are closed by bending the legs and/or the arms. zf necessary, the ends facing one another of the ends and of the arms rnay be rigidly connected tc~gethez~, e.g. by welding, soldering, gluing or the like. This procedure is technically much easier to realise than it is to provide the stator packet with a common zing oz' separate rings by means of which the openings are conventionally closed. During cladding of the Winding grooves, simultaneously hollow shafts disposed axially on 1S the ends may be injectzan moulded on, by means of which winding is simplified. For such purposes insulating matexial is regularly used which hardens after the injection procefis, but does not appreciab~.y influence the magnetic flux. Finally, in order to improve the magnetic flux, the 2s central opening of the discs may be enlarged in such a way that no further metallic barrier exists between the opting and the respective winding grooves, which could impair the magnetic flti~c. zn this case mutually adjacent segments are Field together by the insulation maternal. After winding, t:he user obtains a wound stator packet z~eady for use, all manufacturirxg stages, starting with stamping of the discs and terminat~.ng with enlargemeizt of the internal diameter of t:he opening, being capable of being carried out automatically.
I'v'urther appropriate and advantageous developmezzts of the ~ Zo invention. will become apparent from the sub-claims.
Tn a particularly appropriate development, the arms and/or t-he legs are made of flexible materials. By means of these measures, the winding grooves of the discs, Combined to z5 form a packet, may He entirely enclosed e.g. by welding. A
disc is obtained in which the winding grooves are closed and 'thus the rigidity of the disc considerably increased.
zn a further appropriate development of the invention, the 20, openings are in the form of radially extending slots, enabling s;_m=le winding of the discs. Furthermore, the radially~~aligned legs are slotted in their inner area. Hy tthese measures, contacting of the ends .acing one another of the legs and of the arms may be simply achieved. zn a further appropriate development, the peripherally extending .arms have predetermined bending points. These measures also enable a rapid connection between the terminal parts of the legs and arms.
In a particularly appropriate development of the invention, the peripherally extending arms each comprise two legs, i0 between which is respectively fbrmed a slot, the outer leg being bendable towards the inner leg, closing the opening.
Thus it is appropriate if the slot tapers in an inward direction_ Tntithin the scope of this inventive idea, it is particularly advantageous if predetermined bending points are formed for the outer legs in the region of connection of the legs; and if, in the bent condition of the outer legs, said outer legs may be positively connectable together both with the inner legs and with the radially aligned legs, which taper towards their free ends, forming a duct for a weld seam. This measure means that the shape of the winding groove is not changed, not even when tale outer legs. have 5' been bent_ Therefore damage to the winamg wires cannot occur_ In another appropriate development o~ the invention, the winding gi:ooves axe coated with. insulating material, said winding grooves merging into grooves filled with insulating material on the radial side, and which extend as far as the opening. These measures achieve an electrically contact-free connection between the winding wire and the dlsc_ zn a ,' z0 particul~~ly appropriate development of the invention, the grooves tilled with insulating material respectively operationally connecC to adjacent segments. By means of this measure the magnetic flux flows from the winding grooves into the opening unhindered_ The invention also relates to a method of manufacturing such discs. zn this case the procedure is such that firstly a disc blanx is produced with winding grooves and if necessary grooves. Thereupon the discs are Combined to form a stator plate packet and the winding grooves and grooves are covered or f~.lled with suitable insulating material and wound. The diameter of the central opening is also enlarged so that the annular ureb nolding the segments togettmr is eliminated, and the grooves covered with insulating material. which are ~areferably rectangular in cross-section, extend as far as the opening. Finally, the ends facing one another of the S arms and of the legs are connected by being bent together.
Some embodiments of the invention given by way of eacample are shown diagrammatically in the drawing and will be explained in more detail in the following. Shown are:
I. 0 Figure 1= a disc blank;
Figure 2: the disc shown in Figure 2 with winding grooves covered with ~.nsulating mate_r~.al;
~. 5 Figure 3: the disc shown in Figuz'e 2 with wound winding grooves;
Figure 4: the disc shown in Figure 3, the ands facing one 20 another of the legs and aims be~.ng disposed relative to one another without spacing;
Figure S: the disc shown a.n Figure ~, ~:he arms and legs i.n coritact being connected by welding;
F~guxe 6: the disc shown in Figure 5, in which the central opening has been enlarged to a radius r2;
Figure 7. a further disc;
Figure 8: the disc shown in Figure ~ with bent arms;
Figure 9. a detai.7. of a disc shown on an enlarged sCa~.e;
Figure 10: a stator p7.ate packet comprising disC$ as shown in Figure T;
x5 3?figure 11: the stator packet shown in Figure 1.0 with winding grooves covered and shafts moulded on;
Figure 12: an elevation in the direction of arrow xII
according to Figuxe 11;
F~guxe 6: the disc shown in Figure 5, in which the central opening has been enlarged to a radius r2;
Figure 7. a further disc;
Figure 8: the disc shown in Figure ~ with bent arms;
Figure 9. a detai.7. of a disc shown on an enlarged sCa~.e;
Figure 10: a stator p7.ate packet comprising disC$ as shown in Figure T;
x5 3?figure 11: the stator packet shown in Figure 1.0 with winding grooves covered and shafts moulded on;
Figure 12: an elevation in the direction of arrow xII
according to Figuxe 11;
Figuxe 13:. an axial section through the stator packet according to Figure 11;
Figure 14.°. a perspective view of a further stator plate packet;
Figure 7.5~ an elevation in the direction of the arrow XV
according to Figure 14;
i Figure ~.~: the part identified by XVZ according to Figure 1S, shown on an enlarged scale, and Figure 17: the portion identified by XVII according to Figure 15 shown on an enlarged scale.
Where is seen in Figure 1, in conjunction with Figure 9, a disc z0 for the neagnetic circuit of an electrodynamic motor_ In this case there are pz-bvxded a~centraZ opening 1Z and segments-~L4, 16 disposed around this opening and connected together by non-magnetic or eleCtricaliy non-conductive material_ The segments 14, 16 are provided with radia.lly-aligned legs 18, 20, if necessary having peripherally extendirxg arms 22, 24, said legs 18, 2U defining wi~xding grooves 30 with openings.3z which are accessible radially f°rom the exterior_ The openings 32 are formed in the region raf 'the free radial ends of the legs 20. The arms 22, 24 and the legs ~8, 20 are formed from flexible material. The width d1 of the opening 32 is greater than the thic3cness of ~:he winding wire, which is not shown in further detail. It will further be seen that the openings 32 are in the form of radially-extending slots, so that the winding wire can be IO passed along the inner wall 37. of the winding groove 30_ The radially-aligned legs 20 are slot>ned in their terminal region and may be bent aver without difficulty. zn front of the winding, the winding grooves 30 are covered with insulating material 44, as Figwxe 2 shows for example. It mill fuxther be seen that the winding grooves 30 merge into radial grooves 46 filled with insulating material 44, and which initially have a spacing d2 from the central opening 12. At this stage the opening 12 of the disc s0 has an internal diameter r1. After winding and closure of the ;slots, this internal diameter rl is enlarged, to a value r2 (see Figure 6), so that the grooves 46 filled with insulating material connect the winding grooves 30 with the . , , , , central operr~ng 12. This ensures thatwhe magnetic flux in an inward direction into the central opening 12 is guaranteed.
Figures 7 and 8 show a disc whose arms have predetermined bending points 40 and, after winding of the discs, are bent towards the free ends of the legs 20. These discs are ,tamped parts, in which the segments 14, z6 are alternately '.r-shaped and tooth-shaped with slots 1G-0. The portions ~.6-r.
1.0 1 and 16-2 flanking the slot 1.6-0 can be bent to the free ends of the arms 24 after winding of the wxnd~.ng grooves 30, and may be connected thereto for example by welding.
Figures z.4 to 17 show a stator plate packet or a disc of the ~~aclcet, the particular feature of this disc being that the ~~eripher~:lZy extending arms 22, 24 respectively comprise ttnto legs 22.x., 22.2 or 24.1, 24_2, between which there is f4rmed a slot 22.3 or 24.3, and the outer .leg 22.1 or 24.1 may be bent towards the inner leg 22.2 or 24.2 (see 8igure ~-7).
'The opening 32 is thus closed. The slot 22.3 or 24_3 tapers in an inward direction i.n such a. way that, in the area of connection of the legs 22_1, 22.2. or 24.1, 24.2, predetermined bending points 1 of the outer Legs 22.1 and 24_1 are formed. In the bent condition of the outer legs 22.2, 24,.x., the outer legs 22.7. and 24.1 together with the inner lecfis 22_2, 24_2 and also the legs 20, which taper 'S towards their free ends, may be connected positively together forming a duct 1_z for a welding groove. The advantagf_ of this embodiment resides in the fact that the winding grooves 30 covered with insulating ma,ter~.a3. are not deformed by bending of the outer legs 22.1, 2~.1, as the shape of the winding grooves is constant and the inner legs 22.2, 24.2 are not bent, and this enSUreS that the insulating material is not removed from the inner wall of the Winding groove 30.
Figures 16 and 17 show that the sides 20.1 and 22.5 facing one another in the bent condition of the outer legs may be positively connected tagethex. Thus the end side 22.6 of the head 22.4 closes the actual open~.ng 32 of the winding groove 30. After winding of the stator packet and bending of the legs 22.1 and 24.1, these legs i~ necessary can be welded a.n the regi.ori of the duct z.i_ Due to the special design oil this disc, manufacture of the stator packet is particularly simp3.e and its winding is problem-free.
The following is the procedure for manufacture of the proposed discs:
Firstly a disc blank iFigure Z) with winding grooves and a central opening 12 whose radius rl is such that a web i1 is formed b~stween the central opening 12 and the grooves 46, is manufactured for examp7.e by stamping.
Thereupon a plurality of discs are combined to form a pacxet (Figure 10) and the winding grooves 30 are covered with plastic. Simultaneously the two hollow cylindrical shafts 6 disposed axially at the ends are moulded on, simplifying securing of the packet during winding. Then the radially inward webs can be removed by cutting, machining or turning. Such a disc plate packet is then wound, and f~.nally the openings 32 are closed by bendzng the legs 18, 20 and/or the arms 22, 24. Thus there is obtained a compact unit which requires no reinforcing rings or additional parts. In the case of larger stators it may be appropriate , . ., ,, , , , , rigidly to interconnect the legs and airriis in contact with one anothex e.g. by welding, soldering or gluing_ t 2 t) TQTRL P.15
Figure 14.°. a perspective view of a further stator plate packet;
Figure 7.5~ an elevation in the direction of the arrow XV
according to Figure 14;
i Figure ~.~: the part identified by XVZ according to Figure 1S, shown on an enlarged scale, and Figure 17: the portion identified by XVII according to Figure 15 shown on an enlarged scale.
Where is seen in Figure 1, in conjunction with Figure 9, a disc z0 for the neagnetic circuit of an electrodynamic motor_ In this case there are pz-bvxded a~centraZ opening 1Z and segments-~L4, 16 disposed around this opening and connected together by non-magnetic or eleCtricaliy non-conductive material_ The segments 14, 16 are provided with radia.lly-aligned legs 18, 20, if necessary having peripherally extendirxg arms 22, 24, said legs 18, 2U defining wi~xding grooves 30 with openings.3z which are accessible radially f°rom the exterior_ The openings 32 are formed in the region raf 'the free radial ends of the legs 20. The arms 22, 24 and the legs ~8, 20 are formed from flexible material. The width d1 of the opening 32 is greater than the thic3cness of ~:he winding wire, which is not shown in further detail. It will further be seen that the openings 32 are in the form of radially-extending slots, so that the winding wire can be IO passed along the inner wall 37. of the winding groove 30_ The radially-aligned legs 20 are slot>ned in their terminal region and may be bent aver without difficulty. zn front of the winding, the winding grooves 30 are covered with insulating material 44, as Figwxe 2 shows for example. It mill fuxther be seen that the winding grooves 30 merge into radial grooves 46 filled with insulating material 44, and which initially have a spacing d2 from the central opening 12. At this stage the opening 12 of the disc s0 has an internal diameter r1. After winding and closure of the ;slots, this internal diameter rl is enlarged, to a value r2 (see Figure 6), so that the grooves 46 filled with insulating material connect the winding grooves 30 with the . , , , , central operr~ng 12. This ensures thatwhe magnetic flux in an inward direction into the central opening 12 is guaranteed.
Figures 7 and 8 show a disc whose arms have predetermined bending points 40 and, after winding of the discs, are bent towards the free ends of the legs 20. These discs are ,tamped parts, in which the segments 14, z6 are alternately '.r-shaped and tooth-shaped with slots 1G-0. The portions ~.6-r.
1.0 1 and 16-2 flanking the slot 1.6-0 can be bent to the free ends of the arms 24 after winding of the wxnd~.ng grooves 30, and may be connected thereto for example by welding.
Figures z.4 to 17 show a stator plate packet or a disc of the ~~aclcet, the particular feature of this disc being that the ~~eripher~:lZy extending arms 22, 24 respectively comprise ttnto legs 22.x., 22.2 or 24.1, 24_2, between which there is f4rmed a slot 22.3 or 24.3, and the outer .leg 22.1 or 24.1 may be bent towards the inner leg 22.2 or 24.2 (see 8igure ~-7).
'The opening 32 is thus closed. The slot 22.3 or 24_3 tapers in an inward direction i.n such a. way that, in the area of connection of the legs 22_1, 22.2. or 24.1, 24.2, predetermined bending points 1 of the outer Legs 22.1 and 24_1 are formed. In the bent condition of the outer legs 22.2, 24,.x., the outer legs 22.7. and 24.1 together with the inner lecfis 22_2, 24_2 and also the legs 20, which taper 'S towards their free ends, may be connected positively together forming a duct 1_z for a welding groove. The advantagf_ of this embodiment resides in the fact that the winding grooves 30 covered with insulating ma,ter~.a3. are not deformed by bending of the outer legs 22.1, 2~.1, as the shape of the winding grooves is constant and the inner legs 22.2, 24.2 are not bent, and this enSUreS that the insulating material is not removed from the inner wall of the Winding groove 30.
Figures 16 and 17 show that the sides 20.1 and 22.5 facing one another in the bent condition of the outer legs may be positively connected tagethex. Thus the end side 22.6 of the head 22.4 closes the actual open~.ng 32 of the winding groove 30. After winding of the stator packet and bending of the legs 22.1 and 24.1, these legs i~ necessary can be welded a.n the regi.ori of the duct z.i_ Due to the special design oil this disc, manufacture of the stator packet is particularly simp3.e and its winding is problem-free.
The following is the procedure for manufacture of the proposed discs:
Firstly a disc blank iFigure Z) with winding grooves and a central opening 12 whose radius rl is such that a web i1 is formed b~stween the central opening 12 and the grooves 46, is manufactured for examp7.e by stamping.
Thereupon a plurality of discs are combined to form a pacxet (Figure 10) and the winding grooves 30 are covered with plastic. Simultaneously the two hollow cylindrical shafts 6 disposed axially at the ends are moulded on, simplifying securing of the packet during winding. Then the radially inward webs can be removed by cutting, machining or turning. Such a disc plate packet is then wound, and f~.nally the openings 32 are closed by bendzng the legs 18, 20 and/or the arms 22, 24. Thus there is obtained a compact unit which requires no reinforcing rings or additional parts. In the case of larger stators it may be appropriate , . ., ,, , , , , rigidly to interconnect the legs and airriis in contact with one anothex e.g. by welding, soldering or gluing_ t 2 t) TQTRL P.15
Claims (13)
1. A disk for the magnetic circuit of an electrodynamic motor, comprising :
(i) a central opening having a diameter, (ii) a plurality of legs extending radially from said central opening and being peripherally spaced from each other, (iii) even alternate ones of said legs each formed with outer arms, said arms peripherally extending in opposite directions from each other, (iv) odd alternate ones of said legs each having a radially outer free end, (v) each of said outer arms having a peripheral free end for forming a slot between the peripheral free end and an adjacent radially outer free end adjacent to alternate ones of said peripheral free ends, (vi) a winding groove disposed between each leg, each of said winding grooves being accessible from the outside through said slot, and (vii)(a)the radially outer free ends each of said odd alternate legs having groove dividing said free end into two radially outward extending parts for bending each such outward extending part toward an adjacent end of said peripheral free end of an adjacent outer arm for closing the slot, or (b) the peripherally free ends of each leg being bendable toward an adjacent radially outer free end for closing the slot.
(i) a central opening having a diameter, (ii) a plurality of legs extending radially from said central opening and being peripherally spaced from each other, (iii) even alternate ones of said legs each formed with outer arms, said arms peripherally extending in opposite directions from each other, (iv) odd alternate ones of said legs each having a radially outer free end, (v) each of said outer arms having a peripheral free end for forming a slot between the peripheral free end and an adjacent radially outer free end adjacent to alternate ones of said peripheral free ends, (vi) a winding groove disposed between each leg, each of said winding grooves being accessible from the outside through said slot, and (vii)(a)the radially outer free ends each of said odd alternate legs having groove dividing said free end into two radially outward extending parts for bending each such outward extending part toward an adjacent end of said peripheral free end of an adjacent outer arm for closing the slot, or (b) the peripherally free ends of each leg being bendable toward an adjacent radially outer free end for closing the slot.
2. The disk of claim 1, wherein said (i) odd alternate ones of said legs, (ii) said outer arms, or (iii) both said legs and said outer arms are made of a flexible material.
3. The disk of claim 1, wherein the width of the slot is larger than the diameter of a wire to be used for winding in said groove.
4. The disk of claim 1, wherein said slot is a radially open slot.
5. The disk of claim 1, wherein each of said outer arms has a bending site in a predetermined location thereon.
6. The disk of claim 1, wherein said slot is tapered for a radially inward enlargement.
7. The disk of claim 6, wherein said radially outer free end has a radially outwardly narrowing tapered end, and each of said peripherally free ends of said outer arms are tapered widening radially inwardly, whereby said tapered peripherally free ends of said outer arms when bent inwardly toward said tapered radially outer free ends form a weldable closure of said slot.
8. The disk of claim 7, wherein each of said even alternate legs is formed with two inner peripherally extending inner arms disposed opposite to each other, said inner arms being disposed radially inwardly from said outer arms, said inner arms, said peripherally outer free ends of said outer arms having an inside surface for establishing contact with the radially outer adjacent surface of an inner arm when said weldable closure is formed.
9. The disk of claim 1, wherein one or more of said winding grooves is provided with a radially inward extension toward said central opening.
10. The disk of claim 9, wherein said winding groove and said radially inward extension is lined with an insulating material.
11. The disk of claim 10, when after assembly with like disks into a stator packet, wherein the diameters of the central openings of the disks in the stator packet are enlarged so that said radially inward extension of each disk and the insulating lining therein extend to said central opening.
12. A process for making a stator packet from a plurality of disks each of which comprises, (i) a central opening having a diameter, (ii) a plurality of legs extending radially from said central opening and being periphally spaced from each other, (iii) even alternate ones of said legs each formed with outer arms said arms peripherally extending in opposite directions from each other, (iv) odd alternate ones of said legs each having a radially outer free end, (v) each of said outer arms having a peripheral free end for forming a slot between the peripheral free end and an adjacent radially outer free end adjacent to alternate ones of said peripheral free ends, (vi) a winding groove disposed between each leg, each of said winding grooves being accessible from the outside through said slot, and (vii)(a) the radially outer free ends each of said odd alternate legs having a groove dividing said free end into two radially outward extending parts for bending each such outward extending part toward an adjacent end of said peripheral free end of an adjacent outer arm for closing the slot, or (b) the peripherally free ends of each leg being bendable toward an adjacent radially outer free end for closing the slot, the process comprising placing a predetermined plurality of disks adjacent to each other to form a stator packet having opposed ends, lining the winding grooves of the assembled disks with an insulating material, winding a wire into said lined grooves, closing the slots of the disks in the stator packet, and optionally applying a hollow cylindrical shaft to the opposed ends of the stator packet.
13. The process of claim 12, wherein the stator packet is assembled from disks in which each of said winding grooves is provided with a radially inward extension toward said central opening, further comprising enlarging the diameter of said central opening to expose the radially inward bottom of each radially inward extension to said central opening.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19518286A DE19518286A1 (en) | 1995-05-18 | 1995-05-18 | Lamination plate for electrodynamic machine magnetic circuit |
| DE19518286.3 | 1995-05-18 | ||
| EP9600002 | 1996-01-03 | ||
| WOPCT/EP96/00002 | 1996-01-03 | ||
| PCT/EP1996/000687 WO1996037029A1 (en) | 1995-05-18 | 1996-02-19 | Plate for electrodynamic machines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2215790A1 CA2215790A1 (en) | 1996-11-21 |
| CA2215790C true CA2215790C (en) | 2000-04-11 |
Family
ID=7762267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002215790A Expired - Fee Related CA2215790C (en) | 1995-05-18 | 1996-02-19 | Plate for electrodynamic machines |
Country Status (14)
| Country | Link |
|---|---|
| EP (1) | EP0872005B1 (en) |
| JP (1) | JP2868625B2 (en) |
| KR (1) | KR100406051B1 (en) |
| CN (1) | CN1077343C (en) |
| AT (1) | ATE185457T1 (en) |
| AU (1) | AU4878396A (en) |
| CA (1) | CA2215790C (en) |
| CZ (1) | CZ285137B6 (en) |
| DE (1) | DE19518286A1 (en) |
| ES (1) | ES2139336T3 (en) |
| HU (1) | HU222704B1 (en) |
| PL (1) | PL180606B1 (en) |
| RU (1) | RU2146846C1 (en) |
| WO (1) | WO1996037029A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19652795A1 (en) * | 1996-12-18 | 1998-06-25 | Siemens Ag | Stator for electrodynamic machines and process for their manufacture |
| DE10057123A1 (en) * | 2000-11-16 | 2002-05-23 | Alcatel Sa | Stator for electric motor, has outer ring that locks onto end faces of T-shaped wrapped pole of inner ring |
| DE10340071A1 (en) * | 2003-08-30 | 2005-03-31 | Alcatel | Electric motor stator production method, uses an inner ring with an inner side and pole shanks protruding radially outwards to hold windings |
| DE102010030028A1 (en) | 2010-06-14 | 2011-12-15 | Robert Bosch Gmbh | Armature assembly for manufacturing e.g. rotor of electric machine, has slot running up to base part through armature such that teeth parts of armature are bent concerning to base part when element i.e. wedge, is inserted into slot |
| CN105990916B (en) * | 2015-01-30 | 2020-03-17 | 德昌电机(深圳)有限公司 | Motor armature |
| CN106059221A (en) * | 2016-06-29 | 2016-10-26 | 宁波普林斯电机有限公司 | Rotor to undergo coiling and process of performing coiling on rotor |
| WO2019028438A1 (en) * | 2017-08-03 | 2019-02-07 | Cirrus Water, LLC | Systems and methods for controlling evaporative fluid loss |
| CN108565994A (en) * | 2017-10-26 | 2018-09-21 | 同济大学 | A kind of T-type Inductive component and its application |
| KR101998299B1 (en) * | 2018-06-19 | 2019-07-09 | 유니슨 주식회사 | Stator core assembly |
| CN111049299B (en) * | 2020-01-03 | 2022-02-18 | 深圳市风发科技发展有限公司 | Multi-slot high-voltage switch reluctance motor iron chip |
| CN113595267B (en) * | 2020-04-30 | 2023-06-16 | 华为技术有限公司 | A kind of electrical machinery and electronic equipment |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US628377A (en) * | 1898-11-18 | 1899-07-04 | Welcom M Wilmarth | Lantern-holder and foot-warmer. |
| DE648106C (en) * | 1934-11-10 | 1937-07-22 | Aeg | Single or polyphase AC motor |
| US3440460A (en) * | 1967-08-30 | 1969-04-22 | Universal Electric Co | Laminated motor stator with formed coils and shaded poles and method of making |
| GB2082400B (en) * | 1980-08-14 | 1984-06-06 | Matsushita Seiko Kk | Stator cores |
| DE8435837U1 (en) * | 1984-12-07 | 1986-04-10 | Robert Bosch Gmbh, 7000 Stuttgart | Laminated stator core for an electrical machine |
| JPH063979B2 (en) * | 1986-03-03 | 1994-01-12 | 株式会社日立製作所 | Rotating machine armature and manufacturing method thereof |
| DE3608472C2 (en) * | 1986-03-14 | 1994-04-07 | Bosch Gmbh Robert | Method for noise reduction in an electrical machine and electrical machine produced by this method, in particular three-phase generator for vehicles |
| JPH0642769B2 (en) * | 1986-06-11 | 1994-06-01 | 株式会社日立製作所 | Method for manufacturing armature of rotating electric machine |
| US5187858A (en) * | 1989-06-14 | 1993-02-23 | Matsushita Electric Industrial Co., Ltd. | Method of producing a stator for a rotary machine |
| JPH0564384A (en) * | 1991-02-21 | 1993-03-12 | Mitsubishi Electric Corp | Electric motor |
| IT1259388B (en) * | 1992-03-24 | 1996-03-13 | IMPROVEMENTS IN THE CAVE OPENINGS OF ELECTRIC MACHINE SHEETS |
-
1995
- 1995-05-18 DE DE19518286A patent/DE19518286A1/en not_active Withdrawn
-
1996
- 1996-02-19 WO PCT/EP1996/000687 patent/WO1996037029A1/en not_active Ceased
- 1996-02-19 RU RU97120747A patent/RU2146846C1/en not_active IP Right Cessation
- 1996-02-19 ES ES96904818T patent/ES2139336T3/en not_active Expired - Lifetime
- 1996-02-19 HU HU9900823A patent/HU222704B1/en active IP Right Grant
- 1996-02-19 EP EP96904818A patent/EP0872005B1/en not_active Expired - Lifetime
- 1996-02-19 CA CA002215790A patent/CA2215790C/en not_active Expired - Fee Related
- 1996-02-19 PL PL96323319A patent/PL180606B1/en not_active IP Right Cessation
- 1996-02-19 JP JP8534482A patent/JP2868625B2/en not_active Expired - Fee Related
- 1996-02-19 AU AU48783/96A patent/AU4878396A/en not_active Abandoned
- 1996-02-19 CZ CZ973522A patent/CZ285137B6/en not_active IP Right Cessation
- 1996-02-19 AT AT96904818T patent/ATE185457T1/en not_active IP Right Cessation
- 1996-02-19 CN CN96193588A patent/CN1077343C/en not_active Expired - Fee Related
- 1996-02-19 KR KR1019970707787A patent/KR100406051B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09508000A (en) | 1997-08-12 |
| HUP9900823A3 (en) | 2000-06-28 |
| EP0872005A1 (en) | 1998-10-21 |
| KR19990008261A (en) | 1999-01-25 |
| JP2868625B2 (en) | 1999-03-10 |
| RU2146846C1 (en) | 2000-03-20 |
| CZ352297A3 (en) | 1998-02-18 |
| DE19518286A1 (en) | 1996-11-21 |
| CZ285137B6 (en) | 1999-05-12 |
| CN1183178A (en) | 1998-05-27 |
| WO1996037029A1 (en) | 1996-11-21 |
| EP0872005B1 (en) | 1999-10-06 |
| PL180606B1 (en) | 2001-03-30 |
| CN1077343C (en) | 2002-01-02 |
| PL323319A1 (en) | 1998-03-16 |
| HK1018130A1 (en) | 1999-12-10 |
| CA2215790A1 (en) | 1996-11-21 |
| HU222704B1 (en) | 2003-09-29 |
| ES2139336T3 (en) | 2000-02-01 |
| AU4878396A (en) | 1996-11-29 |
| KR100406051B1 (en) | 2004-02-18 |
| ATE185457T1 (en) | 1999-10-15 |
| HUP9900823A2 (en) | 1999-07-28 |
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| EEER | Examination request | ||
| MKLA | Lapsed |