EP0867981B1 - Kommutator - Google Patents
Kommutator Download PDFInfo
- Publication number
- EP0867981B1 EP0867981B1 EP97122373A EP97122373A EP0867981B1 EP 0867981 B1 EP0867981 B1 EP 0867981B1 EP 97122373 A EP97122373 A EP 97122373A EP 97122373 A EP97122373 A EP 97122373A EP 0867981 B1 EP0867981 B1 EP 0867981B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- connecting lugs
- commutator
- winding
- rotor
- insulating material
- 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 - Lifetime
Links
- 238000004804 winding Methods 0.000 claims description 58
- 238000003466 welding Methods 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 14
- 239000011810 insulating material Substances 0.000 claims description 10
- 238000002604 ultrasonography Methods 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 2
- 230000010358 mechanical oscillation Effects 0.000 claims 1
- 241000446313 Lamella Species 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000003128 head Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 210000001061 forehead Anatomy 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/32—Connections of conductor to commutator segment
Definitions
- the invention relates to a commutator for a rotor Electrical machines with rotor winding and rotor shaft the genus defined in the preamble of claim 1.
- the lugs are located radially from the lamella ends and take the near the point where they bend Winding wires of the rotor winding.
- the electrical and mechanical connection between the winding wires and the Connection lugs are made by ultrasonic torsion welding.
- the high-frequency torsional vibrations are extreme Hollow sonotrode performing small amplitudes Welding device over the one pressed on the rotor shaft Commutator pushed and pressed with its ring-shaped Welding surface with high axial force (e.g. 1000N) on the um the connecting lugs on the winding wires.
- the commutator according to the invention with the characteristic Features of claim 1 has the advantage of Space savings in the radial direction because of the acute-angled course of the connecting lugs of the diameter the outer circle on which the ends of the connection lugs lie, is much smaller with the same length of the connecting lugs.
- there are manufacturing advantages with Ultrasonic torsion welding because of the axial force of the sonotrode taken up in the form of compressive stresses by the insulating body becomes what the strength behavior of the insulating body accommodates. Through the inclination of the connection lugs is also the axial force acting on the insulating body reduced, namely by the cosine of the angle of attack Terminal lugs.
- the wire connection between the Rotor winding and the connecting lugs in hook winding technology is preferably carried out in ⁇ -wrap technique, at which connects the leads of a coil of the rotor winding the diametrically opposite connecting lugs are placed, so that the winding wires are in the area of the rotor shaft cross. Thanks to this winding technology, large Radial forces absorbed at the winding head of the rotor winding and in addition the location of the winding wires is on the inclined connection lugs during assembly and stabilized very well during the welding process.
- a preferred embodiment of a device for Ultrasonic welding of the loops wrapped around the connecting lugs Winding wires for the commutator according to the invention is in Claim 10 specified.
- the one in Fig. 1 in front view and in Fig. 2 in longitudinal section shown commutator, collector or commutator for one electrical machine has a cylindrical Isolierstoff Sciences 11 with a through hole 12, by means of which the commutator with a rotor Rotor shaft 10 carrying rotor shaft of the electrical machine (Fig. 4) is pressed.
- the insulating body 11 carries one Variety of the same over its cylinder circumference Slats 13 arranged circumferentially apart from one another electrically conductive material in the insulating body 11 are anchored.
- each connecting lugs 14 in one piece molded on for connecting winding wires of here Not shown rotor winding of the rotor serve the Connection wires of the individual winding coils of the rotor winding on the commutator bars 13 assigned to the winding coils form.
- the width a the connecting lugs 14 with respect to the lamella width b significantly reduced and is about half that Slat width b (Fig. 3).
- the connecting lugs 14 are under an acute angle ⁇ (Fig.
- Each web back 16 has a long, at an angle ⁇ towards the cylinder part 111 of the insulating material body 11 sloping back section 161 and a very close to the forehead short back section 162 which is parallel to the axis of the Insulating body 11 runs.
- the connecting lugs 14 are slightly angled at the ends, so that the bend area also parallel to the axis of the insulating material body 11 runs and rests on the back portion 162.
- the free Front end of the connecting lugs 14 is flush with the web end the support webs 15.
- the laying of the winding wires 18 between the individual coils of the rotor winding and the Terminal lugs 14 is in the so-called executed, each of which has a coil connection manufacturing winding wires 18 to the associated coil fins 13 of the diametrically opposite to the rotor shaft Commutators are performed. As a result, they cross Winding wires 18 in the area of the rotor shaft. Such Formation of the commutator-side winding head Rotor winding is able to absorb large radial forces, is therefore suitable for high rotational speeds of the rotor.
- the winding wires 18 run approximately at right angles to the connecting lug 14, which causes the risk of slipping is reduced.
- each winding wire 18 runs around the Support webs 15 in the area of the back portions 161 and lies in the grooves 17 of the side flank profiling of the connecting lug 14 a.
- the anvil 22 is also to the angled end, the back section 162 of the 16 overlapping pieces of the connecting lugs 14 pressed on, in order to resonate through the form and / or friction To prevent terminal lugs 14 during the welding process.
- the welding surface 21 of the sonotrode 20 Corresponding to the outward inclined position of the Terminal lugs 14 is the welding surface 21 of the sonotrode 20 formed as a cone section of a cone, the Cone angle twice the angle of attack ⁇ the Connection lugs 14 is. As a result, the welding surface runs 21 in parallel when placing the sonotrode 20 on the commutator to the tops facing away from the support webs 15 Connection flags 14.
- the anvil 22 is in at least two Anvil parts 221 and 222 divided radially to the rotor shaft are fed and at least the free ends of the Overlap lugs 14 so that the commutator overall in the area of the front end of all connecting lugs 14 is supported axially.
- the anvil parts 221 and 222 also parts of the end faces of the overlap individual support webs 15, so that also in addition, the insulating body 11 is axially supported.
- the sonotrode 20 carries high frequencies Torsional vibrations with very small amplitudes, whereby their welding surface 21 with an axial force of, for example approx. 1000 N is pressed onto the winding wires 18.
Landscapes
- Motor Or Generator Current Collectors (AREA)
- Manufacture Of Motors, Generators (AREA)
Description
- Fig. 1
- eine Stirnansicht eines Kommutators,
- Fig. 2
- einen Schnitt längs der Linie II-II in Fig. 1,
- Fig. 3
- ausschnittweise eine vergrößerte Darstellung der Ansicht des Kommutators in Richtung Pfeil III in Fig. 2,
- Fig. 4
- einen Längsschnitt des Kommutators gemäß Fig. 1 - 3 in einer Vorrichtung zum Ultraschalltorsionsschweißen, schematisch dargestellt.
Claims (13)
- Kommutator für einen Rotor mit Rotorwicklung und Rotorwelle aufweisende elektrische Maschinen, mit einem eine Durchgangsbohrung (12) zum Aufpressen auf die Rotorwelle (10) aufweisenden, zylindrischen Isolierstoffkörper (11) und mit in diesem verankerten, axialen Lamellen (13) aus elektrisch leitendem Material, an deren zu dem Rotor weisenden Enden Anschlußfahnen (14) zum Anschließen von Wicklungsdrähten (18) der Rotorwicklung einstückig angeformt sind, dadurch gekennzeichnet, daß die Anschlußfahnen (14) unter einem spitzen Winkel (τ) radial nach außen zu den Lamellen (13) angestellt und am Isolierstoffkörper (11) radial abgestützt sind.
- Kommutator nach Anspruch 1, dadurch gekennzeichnet, daß die Anschlußfahnen (14) nahe ihres Fahnenendes abgewinkelt sind und im Abwinklungsbereich parallel zur Achse des Isolierstoffkörpers (11) verlaufen.
- Komutator nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Abstützung der Anschlußfahnen (14) in einem über den die Lamellen (13) tragenden Zylinderteil (111) hinaus verlängerten Endabschnitt (112) des Isolierstoffkörpers (11) vorgenommen ist.
- Kommutator nach Anspruch 3, dadurch gekennzeichnet, daß die Anschlußfahnen (14) in Umfangsrichtung gesehen schmaler ausgeführt sind als die Lamellen (13) und daß der Endabschnitt (112) des Isolierstoffkörpers (11) im gleichen Umfangsabstand voneinander strahlenförmig angeordnete, radiale Stützstege (15) mit vorzugsweise gleicher Breite wie die Anschlußfahnen (14) aufweist, auf deren Stegrücken (16) die Anschlußfahnen (14) aufliegen.
- Kommutator nach Anspruch 4, dadurch gekennzeichnet, daß jeder Stegrücken (16) einen zum Zylinderteil (111) des Isolierstoffkörpers (11) hin stetig abfallenden, langen Rückenabschnitt (161) und im stirnendnahen Bereich einen parallel zur Achse des Isolierstoffkörpers (11) verlaufenden, sehr kurzen Rückenabschnitt (162) aufweist.
- Kommutator nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß die Anschlußfahnen (14) bündig mit dem den Rotor zugekehrten Stirnende der Stützstege (15) enden.
- Kommutator nach einem der Ansprüche 4 - 6, dadurch gekennzeichnet, daß die Seitenflanken (141,142) der Anschlußfahnen (14) zur teilweisen formschlüssigen Aufnahme von Wicklungsdrähten (18) der Rotorwicklung profiliert sind.
- Kommutator nach Anspruch 7, dadurch gekennzeichnet, daß die Profilierung aus mehreren, in jeder Seitenflanke (141,142) eingearbeiteten, nebeneinanderliegenden Rillen (17) besteht, deren Rillengrund an den Drahtdurchmesser der Wicklungsdrähte (18) angepaßt ist.
- Kommutator nach Anspruch 8, dadurch gekennzeichnet, daß die Verlegung der Wicklungsdrähte (18) im Bereich zwischen der Rotorwicklung und den Anschlußfahnen (14) in Umhakenwickeltechnik, vorzugsweise in α-Umhakenwickeltechnik, ausgeführt ist.
- Vorrichtung zum Ultraschalltorsionsschweißen der um die Anschlußfahnen (14) geschlungenen Wicklungsdrähte (18) bei einem Kommutator nach einem der Ansprüche 1 - 9, mit einer hochfrequente mechanische Schwingungen erzeugenden Sonotrode (20), die mittels einer stirnseitigen, ringförmigen Schweißfläche (21) eine zur Kommutatorachse parallele Andruckkraft auf die Wicklungsdrähte aufbringt und mit einem Amboß (22) zur Abstützung der Anschlußfahnen (20) während des Schweißvorgangs, dadurch gekennzeichnet, daß die Schweißfläche (21) der Sonotrode (20) als Kegelmantelabschnitt eines Kegels mit einem dem Zweifachen des Anstellwinkels (τ) der Anschlußfahnen (14) entsprechenden Kegelwinkel ausgebildet ist und der Amboß (22) zumindestens die Stirnenden der Anschlußfahnen (14) axial abstützt.
- Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß der Amboß (22) an den Stützstegen (15) auf deren dem Rotor zugekehrten Stirnende anliegt.
- Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß der Amboß (22) mindestens zwei radial zum Kommutator zuführbare, teilringförmige Amboßteile (221,222) aufweist, die die Stirnenden der Stützstege (15) übergreifen.
- Vorrichtung nach Anspruch 12, dadurch gekennzeichnet, daß die radiale Übergreifungstiefe der Amboßteile (221,222) der radialen Dicke der Anschußfahnen (14) entspricht.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712712 | 1997-03-26 | ||
| DE19712712A DE19712712A1 (de) | 1997-03-26 | 1997-03-26 | Kommutator |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0867981A2 EP0867981A2 (de) | 1998-09-30 |
| EP0867981A3 EP0867981A3 (de) | 1999-09-29 |
| EP0867981B1 true EP0867981B1 (de) | 2003-03-26 |
Family
ID=7824695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97122373A Expired - Lifetime EP0867981B1 (de) | 1997-03-26 | 1997-12-18 | Kommutator |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0867981B1 (de) |
| JP (1) | JPH10271767A (de) |
| KR (1) | KR19980080539A (de) |
| DE (2) | DE19712712A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103001100A (zh) * | 2011-09-15 | 2013-03-27 | 阿斯莫有限公司 | 换向器的制造方法、模具、换向器、以及有刷电动机 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55144752A (en) * | 1979-04-27 | 1980-11-11 | Mitsubishi Electric Corp | Connecting method for armature coil for rotary machine |
| JPS55147952A (en) * | 1979-05-04 | 1980-11-18 | Mitsubishi Electric Corp | Connecting method of armature coil |
| IN159449B (de) * | 1982-12-31 | 1987-05-23 | Siemens Ag | |
| DE3835818C3 (de) * | 1988-10-21 | 1996-02-08 | Stapla Ultraschalltechnik Gmbh | Verfahren und Vorrichtung zum Verbinden von Ankerwicklungsdrähten mit den Lamellen eines Hakenkollektors |
-
1997
- 1997-03-26 DE DE19712712A patent/DE19712712A1/de not_active Withdrawn
- 1997-12-18 DE DE59709631T patent/DE59709631D1/de not_active Expired - Fee Related
- 1997-12-18 EP EP97122373A patent/EP0867981B1/de not_active Expired - Lifetime
-
1998
- 1998-03-23 KR KR1019980009900A patent/KR19980080539A/ko not_active Ceased
- 1998-03-26 JP JP10078948A patent/JPH10271767A/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103001100A (zh) * | 2011-09-15 | 2013-03-27 | 阿斯莫有限公司 | 换向器的制造方法、模具、换向器、以及有刷电动机 |
| CN103001100B (zh) * | 2011-09-15 | 2016-10-19 | 阿斯莫有限公司 | 换向器的制造方法、模具、换向器、以及有刷电动机 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR19980080539A (ko) | 1998-11-25 |
| JPH10271767A (ja) | 1998-10-09 |
| EP0867981A3 (de) | 1999-09-29 |
| DE19712712A1 (de) | 1998-10-01 |
| EP0867981A2 (de) | 1998-09-30 |
| DE59709631D1 (de) | 2003-04-30 |
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