| 摘要 |
<p>The present utility model discloses a DC motor with carbon brush positioned outside. The motor includes a front cover, housing, magnets, a rotor, a commutator and a rear cover. Two fitting holes, in which a brush frame, a brush guide, and a brush are disposed one in another in sequence, are disposed on the outer wall of the rear cover. The brush contacts with the commutator of the rotor through pressing the spring on the brush cap. Meanwhile the outward end of the brush connects to a copper plate, which is pressed to the rear end of the guide by the brush cap, through a connection wire. It is characterized In that the power supply outlet leads from the copper plate terminal on the outer wall of the guide. The electric connection of the carbon brush of the present utility model is reliable because it is led out from the guide by the connection wire and the copper plate. When the wear and tear condition of the brush is needed to be checked or the brush should be changed, the brush can be took out just by opening the brush cap on the rear of the brush frame. Therefore, the DC motor with carbon brush positioned outside of the present utility model is simple in structure, convenient in installation, small in size, reliable in operating, convenient in checking and changing the brush, and able to prolong the life of the motor.</p> |
