Patent ID: 11942740
Assignee: MINEBEA MITSUMI IN.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A motor comprising:
a rotation axis;
a frame;
an annular magnet attached to the inner surface of the frame;
a bracket provided at the frame, the bracket comprising an outer peripheral portion, a recess portion inside the outer peripheral portion, a protruding portion and a wall portion, the protruding portion and the wall portion being arranged at the recess portion;
a columnar brush having an outer peripheral surface;
a commutator contacting the outer peripheral surface of the brush;
a terminal portion; and
an elastic member supporting the brush at the bracket,
wherein:
the elastic member includes a first extending portion, a second extending portion and a coil portion between the first extending portion and the second extending portion,
a part of the second extending portion of the elastic member is inside the brush,
the first extending portion is fixed to the terminal portion, the wall portion is arranged between a part of the columnar brush contacting the commutator and a part of the first extending portion fixed to the terminal portion from the first extending portion toward the second extending portion,
the protruding portion is arranged inside the coil portion,
the outer peripheral surface of the brush is cylindrical in shape,
the second extending portion of the elastic member penetrates through the brush in an axial direction of the columnar brush, and
the wall portion includes a surface facing the columnar brush across space around a central axis of the coil portion.