Rotating mechanism and electronic device with same

An electronic device comprising:

• a first main body comprising a first connecting peripheral and defining a first groove in the first connecting peripheral;
• a second main body comprising a second connecting peripheral and defining a second groove in the second connecting peripheral;
• and
• a rotating mechanism rotatably connecting the first main body with the second main body, the rotating mechanism comprising:
• a main gear received in the first groove, the main gear comprising a pair of first meshing sections correspondingly formed at two opposite ends of the main gear, each of the first meshing sections comprising a plurality of first teeth formed around an axial direction of the main gear;
• a pair of auxiliary gears correspondingly connected to two opposite inner side surfaces of the second groove, longitualdinal axes of the pair of auxiliary gears coaxial with each other, each of the auxiliary gears comprising a second meshing section, the second meshing section comprising a plurality of second teeth formed around an axial direction of the auxiliary gears;
• and
• a connecting piece comprising a connecting part and a positioning part perpendicularly extending from a middle of the connecting part;
• wherein the positioning part is located between the pair of auxiliary gears, two opposite ends of the positioning part rotatably connected to the pair of auxiliary gears correspondingly, an end of the connecting part away from the positioning part is connected to the main gear to bring the main gear in contact with the auxiliary gears, the first teeth engage with the second teeth to make the first main body rotate about the second main body.