Mounting for brushes of electric motors

Details Mounting for brushes of electric motors Mounting for brushes of electric motors

H - Electricity

02

K

310/126

H02K 5/14 (2006.01) H01R 39/38 (2006.01) H01R 39/40 (2006.01)

Patent

CA 1285596

ABSTRACT OF THE DISCLOSURE A small electric motor includes a wound rotor or armature, a segmented commutator and brushes biased lengthwise against the commutator for providing a circuit through which the armature is energized. Each brush is part of an assembly that also includes a conducting brush tube from which the brush extends, and an insulating tube in which the brush tube is frictionally held. Aligned pivot projections extend transversely from opposite sides of the insulating tube and are received by recesses in the motor frame The recess walls provide bearing formations that are engaged by the pivot projections to cooperate therewith so that during mounting of the insulating tube and elements assembled therewith, the insulating tube is pivoted from an oblique intermediate position to a final operating position. A single screw threadably engaged in the motor frame locks the insulating tube in this final operating position. Tightening of this screw generates a wedging action that stabilizes the insulating tube in its final operating position.

566297

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