| 摘要 |
PROBLEM TO BE SOLVED: To provide a DC motor with brush capable of avoiding generation of short circuits between commutator segments even after a brush is worn.SOLUTION: The DC motor with brush includes a rotating shaft 20, a plurality of commutator segments 72(1)-72(6) arranged in the peripheral direction of the rotating shaft 20, and a brush 90 coming into contact with the commutator segments 72(1)-72(6) to supply an electric current. The brush 90 includes a spring material 91 and a contact material 72 coming into the commutator segment. The brush 90 has an arc-shaped contact faces with the commutator segments 72(1)-72(6). |
