Contactless Power Supply Mechanism and Secondary Coil for Contactless Power Supply Mechanism

A contactless power supply mechanism comprising:

• a power receiving unit having a secondary coil and configured to supply power to an electric device;
• and
• a power supplying unit having a primary coil and configured to supply power to the power receiving unit;
• wherein the primary coil includes a primary core formed of magnetic material and a length of winding wire formed of conductive material and wound around the primary core;
• the secondary coil includes a bar-shaped secondary core formed of magnetic material, a length of winding wire formed of conductive material and wound around the secondary core and a magnetic sheet attached to at least one of end faces of the secondary core;
• and
• the magnetic sheet includes a close-contact portion placed in close-contact with the end face of the secondary core and a curved portion which extends outwards from the close-contact portion beyond an outer edge of the end face and whose normal line has a portion un-parallel with an axial direction of the secondary core.