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, the first groove defining a pair of parallel first inner side surfaces;
• a second main body comprising a second connecting peripheral and defining a second groove in the second connecting peripheral, the second groove defining a pair of parallel second inner side surfaces;
• 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 connecting section, a pair of first meshing sections correspondingly formed at two opposite ends of the connecting section, and a pair of connecting protrusions correspondingly extending from an outer end surface of each first meshing section opposite to the connecting section, the connecting protrusions correspondingly connected to the pair of first inner side surfaces and connecting to the first main body, and 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 the pair of second inner side surfaces, longitudinal axes of the pair of auxiliary gears coaxial with each other, each of the auxiliary gears comprising a positioning section, a second meshing section surrounding an end of the positioning section, and a second connecting protrusion extending from an outer surface of the second meshing section away from the positioning section and connecting to the second main body, 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 positioning part and a connecting part perpendicularly extending from a middle of the positioning part, the connecting part directly connected to the positioning part;
• wherein the positioning part is located between the pair of auxiliary gears, two opposite ends of the positioning part rotatably connected to the positioning sections correspondingly, an end of the connecting part away from the positioning part is connected to the connecting section;
• a biasing means brings the main gear in contact with the auxiliary gears, and the first teeth engage with the second teeth to make the first main body rotate about the second main body.

A rotating mechanism for rotatably connecting a first main body with a second main body, the rotating mechanism comprising:

• a main gear connected to the first main body, the main gear comprising a connecting section, a pair of first meshing sections correspondingly formed at two opposite ends of the connecting section, and a pair of connecting protrusions correspondingly extending from an outer end surface of each first meshing section opposite to the connecting section and connecting to the first main body, 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 the second main body, longitudinal axes of the pair of auxiliary gears coaxial with each other, each of the auxiliary gears comprising a positioning section, a second meshing section surrounding an end of the positioning section, and a second connecting protrusion extending from an outer surface of the second meshing section away from the positioning section and connecting to the second main body, the second meshing section comprising a plurality of second teeth formed around an axial direction of the auxiliary gears;
• a connecting piece comprising a positioning part and a connecting part perpendicularly extending from a middle of the positioning part, the connecting part directly connected to the positioning part;
• and
• a connecting sleeve connecting the connecting piece with the main gear, the connecting sleeve comprising a hollow main body and a ball shaped joint formed at one end of the main body and defining an opening receiving the connecting piece at the other end of the main body opposite to the ball shaped joint;
• wherein the positioning part is located between the pair of auxiliary gears, two opposite ends of the positioning part are rotatably connected to the positioning sections correspondingly, an end of the connecting part away from the positioning part is rotatably received in the hollow main body of the connecting sleeve, the ball shaped joint is jointly connected to the main gear;
• a biasing means brings the main gear in contact with the auxiliary gears, and the first teeth engage with the second teeth to make the first main body rotate about the second main body, the biasing means being disposed between the first main body and the ball shaped joint.