Auxiliary opening and closing mechanism and portable electronic device therewith

A portable electronic device comprising:

• a display module;
• a host module;
• a pivoting mechanism pivotally connecting the display module and the host module;
• and
• an auxiliary opening and closing mechanism for facilitating opening and closing operations of the display module and the host module, the auxiliary opening and closing mechanism comprising:
• a moving magnetic component disposed on one of the display module and the host module, the moving magnetic component having a first passive magnetic property;
• an electromagnetic component disposed on the one of the display module and the host module and adjacent to the moving magnetic component, the electromagnetic component selectively magnetically repulsing or magnetically attracting the moving magnetic component for driving the moving magnetic component to move along a first direction;
• a fixing magnetic component disposed on the other one of the display module and the host module and located at a position corresponding to the moving magnetic component, the fixing magnetic component having a second passive magnetic property;
• a detecting unit disposed in the portable electronic device and for detecting a disposing angle of the portable electronic device;
• a power unit disposed in the portable electronic device and coupled to the electromagnetic component and detecting unit;
• and
• a control unit coupled to the detecting unit and the power unit, the control unit determining the portable electronic device is located at a horizontal position or a non-horizontal position according to the disposing angle detected by the detecting unit;
• wherein when the control unit determines the portable electronic device is located at the non-horizontal position, the control unit controls the power unit to provide a first current for the electromagnetic component, so that the electromagnetic component generates a first active magnetic property to magnetically attract or magnetically repulse the moving magnetic component with the first passive magnetic property to move to a first position along the first direction, and when the moving magnetic component is located at the first position, a first magnetic attractive force is generated between the first passive magnetic property of the moving magnetic component and the second passive magnetic property of the fixing magnetic component for attaching the display module and the host module to each other.