Connection of motor brush holder to stator coil

Details Connection of motor brush holder to stator coil Connection of motor brush holder to stator coil

H - Electricity

01

L

310/121

H01L 41/09 (2006.01) H01R 4/26 (2006.01) H01R 39/36 (2006.01) H02K 5/14 (2006.01)

Patent

CA 1290383

CONNECTION OF MOTOR BRUSH HOLDER TO STATOR COIL ABSTRACT OF THE DISCLOSURE Each brush of a wound rotor type electric motor is mounted in a conducting formed metal tube hav- ing an integral tab that is provided with a narrow slit having an enlarged mouth. The latter faces the commu- tator that is carried by the wound rotor and, as the tube and its assembled brush are moved radially inward to their operating positions, initially receives one end of magnet wire that forms a stator winding. As the stator winding and its associated field stack are moved into operative position with respect to other elements of the stator an indexing formation of the stator posi- tions the wire end for engagement with the tab of the tub. With the tube in its operating position, the wire end is disposed within the narrow slit and is clamped between the tab jaws that are on opposite sides of the slit. During the relative movement between the tube and wire end, the jaw edges cut through the thin coat- ing of insulation on the wire end and the wire end is slightly deformed by the jaws to form a reliable elec- trical connection directly between the tab and the wire.

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