| 摘要 |
PROBLEM TO BE SOLVED: To provide a DC motor with a brush in which a worm shaft may expand and retract.SOLUTION: A DC motor with a brush drives worm shafts 31 and 32 and includes: a stator 20; and a rotor 10 provided at the inner peripheral side of the stator 20. The rotor 10 includes: a cylindrical case 11 having a hollow space in a part that becomes a rotation axis R; and female screw parts 12a, 12b, 12c, and 12d which are formed on an inner wall surface of the cylindrical case 11 and are fitted in the worm shafts 31 and 32 by screw action. |
