Drum commutator and method for producing the same

H - Electricity – 01 – R

Patent

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Details

H01R 43/08 (2006.01) H01R 39/04 (2006.01)

Patent

CA 2441472

The invention relates to a drum commutator comprising a cylinder-shaped support base (1) produced from an insulating pressed material, a plurality of metal conductor segments (3) with terminal lugs (8) disposed thereon and an equal amount of carbon segments (4) that are electrically connected to the conductor segments (3). The drum commutator, adjacent to the terminal lugs (8), further comprises an annular, closed substantially regularly cylindrical surface (19) with alternating pressed material zones and metal zones, as well as a metallized inner surface of the carbon segments (4) that communicates with the support base (1). When producing such a drum commutator, the conductor segments (3) are preferably first connected to a conductor blank via bridge portions which are removed once the conductor blank has been assembled with a carbon cylinder and the support base has been injection-molded onto it.

La présente invention concerne un commutateur de bobine comprenant un corps de support cylindrique (1) réalisé en matériau comprimé isolant, une pluralité de segments métalliques conducteurs (3) contre lesquels se trouvent des barrettes de connexion (8), et un nombre correspondant de segments de carbone (4) qui sont connectés électriquement aux segments conducteurs (3). Ledit commutateur présente: une surface (19) annulaire, sensiblement cylindrique circulaire, fermée et disposée à proximité des barrettes de connexion (8), ladite surface présentant des zones alternées de matériau comprimé et de métal; et une surface interne métallisée des segments de carbone (4), en connexion avec le corps de support. Lors de la réalisation d'un commutateur de bobine de ce type, les segments conducteurs (3) sont de préférence tout d'abord reliés à une ébauche conductrice par l'intermédiaire de parties de pont, ladite ébauche conductrice étant éliminée après son assemblage avec un cylindre de carbone et injection du corps de support.

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