| 摘要 |
PROBLEM TO BE SOLVED: To miniaturize a motor and to prevent a control circuit from becoming unstable owing to heat generation and characteristics from changing by mounting a circuit board at the flange of a bobbin and extending it toward the outside in the radius direction of the bobbin. SOLUTION: A mounting part 15 for mounting a circuit board 9 is provided at the outer edge part of one flange 6a in a bobbin 6 and a joining surface 15a for joining the circuit board 9 is formed along the radius direction of the bobbin 6 at the mounting part 15. Then, by bringing the circuit board 9 into contact with the joining surface 15a and soldering and fixing the circuit board 9 to a terminal 16, the circuit board 9 can be mounted along the radius direction of the bobbin 6 while it is extended, thus reducing the number of components, miniaturizing the motor, reducing cost, and at the same time isolating a control circuit from a coil winding which serums as a heat source, and hence preventing such problem as drifting and accurately controlling a speed with improved durability. |
