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Method of producing a flat commutator

  • US 5,996,210 A
  • Filed: 12/15/1997
  • Issued: 12/07/1999
  • Est. Priority Date: 07/13/1995
  • Status: Expired due to Term
First Claim
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1. Process for manufacturing a flat commutator comprising a metallic supporting body with segment supporting structure connected to a carbon ring wheel having segments and a plastic hub covering a central bore of the supporting body, said process comprising the following steps:

  • (a) providing the supporting body with a plurality of identical grooves on a side of the supporting body which faces away from the carbon ring wheel, the grooves radially extending from an edge of the central bore to an outer edge and being spaced by an angle defined by a segmentation of the supporting body, the grooves being open to the side of the supporting body which faces away from the carbon ring wheel and having a depth smaller than a thickness of the supporting body and a width greater than an air gap present with a separation of the ring wheel into segments;

    (b) forming the hub;

    (c) reducing the thickness of the supporting body in an area forming a contact surface for the ring wheel until all segment supporting structures are completely electrically separated from each other through the grooves, and a plastic material filling the grooves in the contact surface is free;

    (d) connecting the ring wheel to the segment supporting structures of the supporting body; and

    (e) separating the ring wheel into segments corresponding to the segmentation of the supporting body.

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  • 4 Assignments
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