EP0021913A1 - Stirnkollektor für elektrische Maschine, insbesondere Kraftfahrzeugmaschine - Google Patents

Stirnkollektor für elektrische Maschine, insbesondere Kraftfahrzeugmaschine Download PDF

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Publication number
EP0021913A1
EP0021913A1 EP80400795A EP80400795A EP0021913A1 EP 0021913 A1 EP0021913 A1 EP 0021913A1 EP 80400795 A EP80400795 A EP 80400795A EP 80400795 A EP80400795 A EP 80400795A EP 0021913 A1 EP0021913 A1 EP 0021913A1
Authority
EP
European Patent Office
Prior art keywords
blades
disc
radial
tubular hub
slots
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.)
Withdrawn
Application number
EP80400795A
Other languages
English (en)
French (fr)
Inventor
Alexandre Larrauri
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ducellier et Cie
Original Assignee
Ducellier et Cie
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 Ducellier et Cie filed Critical Ducellier et Cie
Publication of EP0021913A1 publication Critical patent/EP0021913A1/de
Withdrawn legal-status Critical Current

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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
    • H01R39/04—Commutators
    • H01R39/06—Commutators other than with external cylindrical contact surface, e.g. flat commutators

Definitions

  • the present invention relates to a front collector for an electric machine fitted in particular to motor vehicles, a collector comprising collecting blades arranged radially on an insulating support, of molded material, by means of anchoring means provided on the rear face of the collecting blades. .
  • collectors of this type from a disk cut from a copper plate.
  • the radial collecting blades are obtained by a stamping operation leaving a small thickness of material in the form of a bridge and projecting between two consecutive blades, which thickness is eliminated during the subsequent finishing operations.
  • the anchoring means are obtained by raising the material constituting the collecting blade, using a cutting tool.
  • a metal hub of length less than the thickness of the insulating support inserted during the molding operation of said support serves as a means of fixing the collector to the armature shaft.
  • This embodiment has the drawback of having insulating material between the collecting blades at their working front face, which insulating material being more resistant to erosion than the copper of the collecting blades causes the brushes to come off. the working face of the collecting blades, detachments detrimental to the constancy of the performance of the machine.
  • the present invention aims to remedy these drawbacks, and for this purpose relates to a front collector comprising collecting blades obtained by stamping, in a copper disc, radial grooves leaving a small thickness of material between each of the blades, the plurality of said blades then being arranged on an insulating support, of molded material, by means of anchoring means, characterized in that the copper disc comprises a tubular hub and in that before molding of the insulating support, the grooves radials forming projecting ribs on one of the faces of the disc are removed, by punching, in line with the outside diameter of the tubular hub over a radial length such as a crown of material, of width - predetermined, is obtained on the periphery of the disc, which tubular hub and which crown are removed or during a subsequent machining phase.
  • the disk comprising the collecting blades provided with their anchoring means and the radial slots between the blades, obtained by punching, is positioned, by means of indexing means, in a device for molding the insulating support, which device for molding comprises a number of radial blades corresponding to the width, the length and the number of slots punched in the disc, which blades, of predetermined height, penetrate into the slots so as to avoid any deposit of insulating material between the collecting blades at the level of their working face.
  • the indexing means consist of three bosses spaced angularly by 120 degrees, which bosses are provided at the peripheral part of the copper disc.
  • the collecting blades 1 are obtained in a known manner, by stamping in a copper disc previously cut from a copper plate.
  • the stamping operation of the collecting blades 1, should remain a small thickness of material 2 (see fig. 2), between two consecutive blades, which thickness of material present in the form of ribs projecting from one side of the disc.
  • the anchoring points 3 of the collecting blades on the insulating support 4 are obtained, in a known manner by raising the material of the collecting blades, using a cutting tool.
  • the disc comprises a tubular hub5 (see fig. 3) obtained by stamping the central part of the disc.
  • the projecting ribs formed by the small thickness of material2 are removed, by punching, in line with the outside diameter of the tubular hub over a radial length such as a crown of material 6, of predetermined width is obtained on the periphery of the disc (see Fig. 1 and 3), which tubular hub 5 and which crown 6, which hold the collecting blades 1 between them, are removed during a subsequent machining phase.
  • the disc comprising the collecting blades 1, provided with their anchoring means 3, and the radial slots 7, obtained by punching the projecting ribs is positioned, by means of indexing means 8 (see fig. 1) in a device for molding the insulating support, which molding device comprises a number of radial blades 9 (see FIGS.
  • a tubular hub 11 of length less than the thickness of the insulating support 4 (see fig. 4) is inserted during the molding operation of the insulating support 4 and serves as a means of fixing the collector to the armature shaft of the electric machine.
  • the indexing means 8 arranged at the periphery of the disc consist of three bosses (see fig. 1) spaced angularly by 120 degrees, this angular spacing having the purpose of accelerating the positioning of the disc in the molding device of the insulating support.
  • the material crown 6 and the tubular hub 5 are eliminated during a subsequent machining phase, which machining phase carried out before or after mounting the manifold on the armature of the machine ensures the separation of the collecting blades compared to others.
  • the collector object of the invention has the advantagej by the fact that the insulating material does not lie flush with the working faces of the collecting blades, to avoid any detachment of the brushes during operation, as a result, the consistency of the performance of the machine is considerably improved.

Landscapes

  • Motor Or Generator Current Collectors (AREA)
  • Manufacture Of Motors, Generators (AREA)
EP80400795A 1979-06-13 1980-06-04 Stirnkollektor für elektrische Maschine, insbesondere Kraftfahrzeugmaschine Withdrawn EP0021913A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7915095 1979-06-13
FR7915095 1979-06-13

Publications (1)

Publication Number Publication Date
EP0021913A1 true EP0021913A1 (de) 1981-01-07

Family

ID=9226531

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80400795A Withdrawn EP0021913A1 (de) 1979-06-13 1980-06-04 Stirnkollektor für elektrische Maschine, insbesondere Kraftfahrzeugmaschine

Country Status (2)

Country Link
EP (1) EP0021913A1 (de)
ES (1) ES251248Y (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2618268A1 (fr) * 1987-07-16 1989-01-20 Equip Electr Moteur Collecteur frontal pour machine electrique tournante et procede de fabrication d'un tel collecteur.
FR2624315A1 (fr) * 1987-12-07 1989-06-09 Equip Electr Moteur Collecteur frontal pour machine electrique tournante

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1159990A (en) * 1914-11-10 1915-11-09 Harry E Pickard Ice-cream-carton holder and filler.
GB1127069A (en) * 1966-09-01 1968-09-11 Bosch Gmbh Robert Improvements in commutators for electrical machines
US3414970A (en) * 1965-12-27 1968-12-10 Nippon Denso Co Method of producing flat or surface commutator
FR2378383A1 (fr) * 1977-01-19 1978-08-18 Sesame Anc Fils Charles Vuilla Procede de fabrication de collecteur plat pour moteur electrique et collecteur realise selon le procede
FR2394906A1 (fr) * 1977-06-15 1979-01-12 Landis & Gyr Ag Procede de fabrication d'un collecteur plan de moteur electrique miniature

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1159990A (en) * 1914-11-10 1915-11-09 Harry E Pickard Ice-cream-carton holder and filler.
US3414970A (en) * 1965-12-27 1968-12-10 Nippon Denso Co Method of producing flat or surface commutator
GB1127069A (en) * 1966-09-01 1968-09-11 Bosch Gmbh Robert Improvements in commutators for electrical machines
FR2378383A1 (fr) * 1977-01-19 1978-08-18 Sesame Anc Fils Charles Vuilla Procede de fabrication de collecteur plat pour moteur electrique et collecteur realise selon le procede
FR2394906A1 (fr) * 1977-06-15 1979-01-12 Landis & Gyr Ag Procede de fabrication d'un collecteur plan de moteur electrique miniature

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2618268A1 (fr) * 1987-07-16 1989-01-20 Equip Electr Moteur Collecteur frontal pour machine electrique tournante et procede de fabrication d'un tel collecteur.
FR2624315A1 (fr) * 1987-12-07 1989-06-09 Equip Electr Moteur Collecteur frontal pour machine electrique tournante

Also Published As

Publication number Publication date
ES251248Y (es) 1981-03-16
ES251248U (es) 1980-09-16

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Designated state(s): DE GB IT

STAA Information on the status of an ep patent application or granted ep patent

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18W Application withdrawn

Withdrawal date: 19810915

RIN1 Information on inventor provided before grant (corrected)

Inventor name: LARRAURI, ALEXANDRE