WO2005015695A1 - Collecteur - Google Patents

Collecteur Download PDF

Info

Publication number
WO2005015695A1
WO2005015695A1 PCT/DE2004/001749 DE2004001749W WO2005015695A1 WO 2005015695 A1 WO2005015695 A1 WO 2005015695A1 DE 2004001749 W DE2004001749 W DE 2004001749W WO 2005015695 A1 WO2005015695 A1 WO 2005015695A1
Authority
WO
WIPO (PCT)
Prior art keywords
commutator
undercuts
lamella
transverse
axial
Prior art date
Application number
PCT/DE2004/001749
Other languages
German (de)
English (en)
Inventor
Hans Deierling
Wolfram Hasert
Dieter Ahrens
Juergen Moritz
Olaf Pflugmacher
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to EP04762594.2A priority Critical patent/EP1654785B1/fr
Publication of WO2005015695A1 publication Critical patent/WO2005015695A1/fr

Links

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
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/06—Manufacture of commutators
    • 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
    • H01R39/04—Commutators

Definitions

  • a commutator is known from German published patent application DE-OS 32 43 191, which is used to supply power to rotors of electrical machines.
  • This commutator has lamellae arranged on its circumference, which serve as sliding contacts for brushes.
  • Each of the lamellae has dovetail-shaped interlocking connections which have an axially extending profile.
  • the lamellae are embedded with their radially inward side, and thus with the dovetail-shaped interlocking connections, in a hardenable mass, so that there is finally a secure interlocking between the hardened mass and the lamellae.
  • the undercuts are suitable for relatively low speeds or speeds of the rotor.
  • a commutator for the same purposes is also known from German utility model auxiliary application DE-U 1 774 892.
  • the lamellae known from this document have dovetail grooves or profiles that extend in the circumferential direction or transversely to the axial direction.
  • the commutator according to the invention with the features of the main claim has the advantage that there are dovetail-shaped interlocking connections that extend in profile-like manner in the axial direction and that there is at least one further transverse undercut that extends through them in a profile-like manner transverse to the axial direction of the commutator or the longitudinal axis of each lamella.
  • two transverse undercuts together have a dovetail shape.
  • a further improved fluid dynamic design is achieved if, on the one hand, two transverse undercuts forming a dovetail shape form a common hollow profile which extends over a length of at most 40% of a lamella length.
  • two adjacent transverse undercuts have different radial heights and on the other hand the heights of the undercuts decrease towards a winding connection.
  • This has the advantage that a transverse undercut can also be arranged in the area between the brush lying on top and the winding connection, which has a smaller radial height compared to its adjacent transverse undercut. This enables the current carrying capacity of a lamella to be kept very high overall and still achieves a very good spin resistance.
  • the lamellae have an end face at least on one axial side, which is interrupted by a groove oriented in the circumferential direction. Through this groove, it is additionally possible to support the end face of a lamella via the groove in the molding compound already mentioned and thus also to obtain a supporting effect on the outside of the lamellae.
  • FIG. 1 shows a schematic representation of a spatial view of a commutator
  • FIG. 2 shows a spatial representation of an individual lamella in a first exemplary embodiment
  • FIG. 3 shows a side view of the lamella from FIG. 2
  • FIG. 4 shows a second exemplary embodiment of a lamella
  • Figure 5 to Figure 7 three other embodiments of slats or their profile in a schematic view.
  • a commutator 10 is shown in a somewhat schematic representation in FIG.
  • the commutator 10 consists of lamellae 13 which are arranged uniformly distributed on the circumference and are spaced apart from one another in an insulated manner.
  • the lamellae 13 each have interlocking connection elements which are embedded in a hardened mass 16.
  • the hardened mass 16 After completion of the commutator 10, the hardened mass 16 has an overall annular shape.
  • a bore 19 or a cylindrical hole within the mass 16 serves to fasten the commutator on a shaft of a rotor, not shown here.
  • the hardened mass 16 is shaped in such a way that it forms a collar 22 at an end face of the slats 13.
  • FIG. 2 shows a first exemplary embodiment of a single lamella 13.
  • This lamella 13 is overall L-shaped and consequently consists of a shorter leg 25 and a longer leg 26.
  • the shorter leg 25 serves here as a winding connection 27.
  • This winding connection 27 is used later on Runner wire ends attached to the rotor winding.
  • the longer leg 26, with its radially outwardly directed surface 29, serves as a counter-contact for brushes that will slide later on.
  • each lamella has axial undercuts 32 which each extend in the axial direction of the commutator and in pairs enable a dovetail-shaped positive connection on both sides of a lamella.
  • transverse undercuts 35 While four further so-called transverse undercuts 35 are provided in FIG. 2, which extend in profile-like manner transversely to the axial direction of the commutator, it is provided overall that in addition to the axial undercuts 32, at least one further transverse undercut 35 extends in the transverse direction to the lamella 13.
  • FIG. 3 shows the lamella 13 from FIG. 2 in a side view.
  • the axial extension of the lamella 13 is oriented in the direction of the commutator axis, which is denoted here by 37.
  • the lamella 13 can be divided into two axial halves, with a first half - on the right in FIG. 3 - being turned away from the winding connection 27.
  • the at least one further transverse undercut 35 here a total of four transverse undercuts 35 is shown, in relation to the axial extension of the lamella 13 essentially in the first half, namely in the half facing away from the winding connection 27 ,
  • the at least one further transverse undercut 35 based on the axial extension of the lamella, essentially in a first third due to the high current load of each lamella, this first third also here faces away from the winding connection 27.
  • this first third also here faces away from the winding connection 27.
  • FIGS. 3 and 4 provision is made to arrange two adjacent transverse undercuts 35 next to one another in such a way that they together have or form a dovetail shape.
  • FIG. 5 shows a third exemplary embodiment of a lamella 13.
  • the illustration of the axial undercuts has been omitted here, since these are of no significance for the following explanation.
  • two transverse undercuts 35 together form a dovetail-shaped common hollow profile 40.
  • This hollow profile 40 is intended to extend over a maximum axial length which corresponds to 40% of a lamella length.
  • a plurality of transverse undercuts 35 form a plurality of dovetail-shaped hollow profiles 40 which have different radial heights.
  • the heights of the Remove the undercuts 35 towards the winding connection 27 are provided.
  • the hollow profile 40 closest to the winding connection 27 has a height h r ⁇ that is smaller than the height h r 2 of the next hollow profile 40. Accordingly, the third hollow profile 40 has a height h r 3 that is greatest and from the winding connection 27 is the farthest.
  • the exemplary embodiment from FIG. 7 shows a hollow profile 40 which is formed from two transverse undercuts 35, the transverse undercut 35, which is closest to the winding connection 27, having a smaller height h r ] than the transverse undercut 35, which faces away from the winding connection 27 ,
  • the end faces of the slats 13 are interrupted by a groove 45 oriented in the circumferential direction.
  • a further positive connection between the mass 16 and the slats 13 can thus be achieved, in which the mass 16 extends axially outward in each case in a radially outward direction and thus engages in the grooves 45.
  • a copper strip is made using a casting process.
  • This copper strip has an L-shaped profile and already has the transverse undercuts 35.
  • the shape of the individual lamellae is first embossed by means of various embossing processes and the axial undercuts 32 are formed on the peripheral sides of the lamellae 13.
  • the copper profile is cut to length by a punching process.
  • the strip thus obtained is then rolled into a ring shape and inserted into a press tool.
  • the annular lamella strand is then filled with the plastic mass 16 in the pressing tool and pressed towards the commutator 10.
  • each individual lamella 13 has an additional reinforcement of the positive connection to the molding compound 16, which opposes the centrifugal forces.
  • a possible gradation of the groove depths h r ⁇ , h r 2, h r 3, ... can prevent disturbing influences, for example temperature build-up or excessive line resistance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Motor Or Generator Current Collectors (AREA)

Abstract

L'invention concerne un collecteur servant à alimenter en courant des rotors de machines électriques, lequel présente des lamelles (13) disposées sur sa périphérie, qui sont incorporées de façon sûre dans une substance (16) durcie, au moyen d'un élément d'assemblage par liaison de forme présentant des contre-dépouilles axiales (32). Ces contre-dépouilles axiales (32) s'étendent à la manière d'un profil dans le sens axial du collecteur (10). En outre, au moins une contre-dépouille transversale (35) s'étend, à la manière d'un profil, transversalement par rapport au sens axial du collecteur (10).
PCT/DE2004/001749 2003-08-05 2004-08-04 Collecteur WO2005015695A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04762594.2A EP1654785B1 (fr) 2003-08-05 2004-08-04 Collecteur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10335894.3 2003-08-05
DE2003135894 DE10335894A1 (de) 2003-08-05 2003-08-05 Kommutator

Publications (1)

Publication Number Publication Date
WO2005015695A1 true WO2005015695A1 (fr) 2005-02-17

Family

ID=34129490

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2004/001749 WO2005015695A1 (fr) 2003-08-05 2004-08-04 Collecteur

Country Status (4)

Country Link
EP (1) EP1654785B1 (fr)
CN (1) CN100544135C (fr)
DE (1) DE10335894A1 (fr)
WO (1) WO2005015695A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008002608A1 (de) 2008-06-24 2009-12-31 Robert Bosch Gmbh Kommutator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH263766A (de) * 1948-01-21 1949-09-15 Ag Scintilla Verfahren zur Herstellung von Stromwendern.
CH361332A (de) * 1955-09-28 1962-04-15 Siemens Ag Verfahren zur Herstellung von Stromabgeberisolationen
FR2532789A1 (fr) 1982-09-07 1984-03-09 Cheveux Yves Collecteur de machine electique tournante, et son procede de fabrication
DE29802497U1 (de) 1998-02-13 1998-05-20 Kolektor D.O.O., Idrija Kommutator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH263766A (de) * 1948-01-21 1949-09-15 Ag Scintilla Verfahren zur Herstellung von Stromwendern.
CH361332A (de) * 1955-09-28 1962-04-15 Siemens Ag Verfahren zur Herstellung von Stromabgeberisolationen
FR2532789A1 (fr) 1982-09-07 1984-03-09 Cheveux Yves Collecteur de machine electique tournante, et son procede de fabrication
DE29802497U1 (de) 1998-02-13 1998-05-20 Kolektor D.O.O., Idrija Kommutator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008002608A1 (de) 2008-06-24 2009-12-31 Robert Bosch Gmbh Kommutator

Also Published As

Publication number Publication date
DE10335894A1 (de) 2005-03-10
EP1654785B1 (fr) 2016-05-25
CN1833342A (zh) 2006-09-13
CN100544135C (zh) 2009-09-23
EP1654785A1 (fr) 2006-05-10

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