Patent ID: 7545071

Claim:
A brush holder device for use in a small-size motor including a brush arm connected at one end to an input terminal for external electrical connection and supporting at an opposite end a brush, comprising: a brush including an integrally formed engagement portion; a brush arm having an engagement hole formed therein, the engagement hole assuming substantially the same shape as that of the engagement portion of said brush, and including brush arm brush contact portions located at laterally opposite edges of the engagement hole; and a holder having an engagement hole formed therein and holder brush contact portions formed via bending, said holder being made of a material having lower spring properties than said brush arm, the engagement hole assuming substantially the same shape as that of the engagement portion of said brush, said holder being fixed to said brush arm such that the engagement hole of said holder is aligned with the engagement hole of said brush arm, said brush arm brush contact portions extending through said engagement hole of said holder, whereby one of said brush arm brush contact portions is adjacent to one of said holder brush contact portions; wherein said holder brush contact portions are formed on said holder along opposite edges defining said engagement hole of said holder, one edge of said holder being opposite another edge of said holder in a longitudinal direction of said brush arm, said engagement portion of said brush being press-fitted into the engagement holes of said holder and said brush arm, whereby said engagement portion of said bush is fixed to said holder and said brush arm via said holder brush contact portions and said brush arm brush contact portions.