| 摘要 |
PROBLEM TO BE SOLVED: To reduce an unpleasantness due to a noise of a motor while the speed of rotation of the motor is accurately controlled in a massage machine using a brushless DC motor. SOLUTION: The massage machine is equipped with a driving unit 30 which is vertically moved along a guiding rail 22, a first motor 11 to vertically move the driving unit 30, massaging tool bases 3A and 3B which are driven to reciprocate in mutually opposite directions, a second motor 12 to drive the massaging tool bases to reciprocate in the mutually opposite directions, massaging tools 2 held by the massaging tool bases, a third motor 13 to drive the massaging tools 2 in a plane approximately orthogonal to a backrest of a chair, and a control circuit 25 to independently drive the individual motors, wherein the individual motors are the brushless DC motors and the control circuit 25 selects and switches one method of introducing the electric current to the motor out of at least two or more methods of introducing the electric current corresponding to the speed of rotation of the motor. COPYRIGHT: (C)2006,JPO&NCIPI
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