DC motor with externally mounted carbon brush

Details DC motor with externally mounted carbon brush DC motor with externally mounted carbon brush

2007-02-20

2007-02-20

Nguyen, Tran (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S239000, C310S242000

Reexamination Certificate

active

11248206

ABSTRACT:
This invention discloses a DC motor with externally mounted carbon brushes, comprising a front end cover, a housing, magnet, a rotor, a commutator and a back end cover, characterized in that the outer wall of the back end cover is provided with two mounting holes for brush brackets which are mounted with annular brush brackets having identical structures, a radial sliding tube used to mount the carbon brush is located in said brackets, said carbon brush in the sliding tube for carbon brush contacts the commutator by a spring biasing against a brush cap, the outward end thereof being connected to a copper sheet through a brush shunt, said copper sheet is held against the back end of the sliding tube, a lead wire for a power source is lead out from an outlet of another copper sheet at an outer wall of the sliding tube. The electrical connection of the carbon brush is lead out from the sliding tube through the brush shunt and the copper sheet, therefore the electrical connection is reliable. The present invention is simply constructed and easily mounted, the volume thereof is small, the operation thereof is reliable, it is easy to maintain and replace the carbon brushes and it extends significantly the life of the motor.

REFERENCES:
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patent: 1047030 (1999-12-01), None
patent: 2490753 (2002-05-01), None
patent: 2543249 (2003-04-01), None
patent: 2-214442 (1990-08-01), None

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