Patent ID: 7498764
Filing Date: 2009-03-03
Classification: B23D,B27B,Y10T

Abstract:
1. A control device for driving a regulating motor which is driven by direct current (DC) and has a rotational shaft, a first power terminal and a second power terminal, said control device comprising: a changeover mechanism having a first normally closed (NC) switch, a second NC switch, a first normally open (NO) switch, and a second NO switch; a power-supply module for providing said regulating motor with DC power; a first line connecting said power-supply module and said first power terminal, and said first NO switch serially connected therein; a second line connecting with said power-supply module and said second power terminal, and said first NC switch serially connected therein, wherein said first and second lines connecting with the same one polarity of said power-supply module; a third line connecting with said power-supply module and said first power terminal, and said second NC switch serially connected therein; a fourth line connecting with said power-supply module and said second power terminal, and said second NO switch serially connected therein, wherein said third and fourth lines connecting with the other polarity of said power-supply module; a first operating switch for driving said rotational shaft of said regulating motor to rotate, wherein said rotational shaft rotates in a first direction while said two NC switches become open-circuit and said two NO switches become short-circuit resulting from that said first operating switch become short-circuit; and a second operating switch for driving said rotational shaft of said regulating motor to rotate in a second direction opposite to said first direction.