Direct current electric motor

Details Direct current electric motor Direct current electric motor

H - Electricity

02

K

310/122, 310/92

H02K 27/22 (2006.01) H01R 39/39 (2006.01) H02K 5/14 (2006.01) H02K 13/00 (2006.01) H01R 39/14 (2006.01)

Patent

CA 1046567

ABSTRACT OF THE DISCLOSURE In a permanent magnet motor wherein commutator seg- ments have surfaces arranged in a plane perpendicular to the motor shaft for sliding contact with brushes, each brush is made of sheet metal and comprises an inner portion affixed to an end cap of the motor casing, and a substantially annular outer portion united at one of its ends to the inner portion and having an embossed contact on the other end which is resiliently urged into sliding contact with the commutator segment surfaces. The outer brush portion is notched to engage a protuberance on the end cap. A lubricant reservoir is formed either on the commutator or on each brush. The end cap may be locked in position on the motor casing, and the commutator may be mounted on the motor shaft in a predetermined angular position in relation to that of an armature core.

254647

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