Motor having grounding structure for reducing radio noise

DETAILED DESCRIPTION The present invention therefore has an objective to provide a motor having a grounding structure for reducing radio noise that appears at a motor yoke without any increase in parts cost.
A motor of the present invention includes a substantially cylinder-shaped motor yoke, an end plate provided adjacent to an opening of the motor yoke, and a DC power input fixed to the end plate.
The motor yoke has a flange at its opening end.
The flange protrudes outward and has a contact with a part of a negative terminal of the DC power input section.
In this motor, the motor yoke is grounded via the negative terminal, that is, an additional part is required for grounding the motor yoke.
Therefore, the radio noise that appears at the motor yoke is reduced without an increase in parts cost.
Moreover, the negative terminal is directly connected to the motor yoke.
This maintains the contact resistance between the negative terminal and the motor yoke at low level.
Therefore, the radio noise that appears at the motor yoke is constantly reduced.
The negative terminal has an elastic contact segment that protrudes toward the flange.
The elastic contact segment is pressed against the flange.
Therefore, the contact between the negative terminal and the motor yoke is maintained even when the connection between the motor yoke and the end plate becomes loose.