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A rotating mechanism for rotatably connecting a first main body with a second main body includes a main gear connected to the first main body, a pair of auxiliary gears connected to the second main body, and a connecting piece. The connecting piece includes a connecting part and a positioning part p

A rotating mechanism for rotatably connecting a first main body with a second main body includes a main gear connected to the first main body, a pair of auxiliary gears connected to the second main body, and a connecting piece. The connecting piece includes a connecting part and a positioning part perpendicularly extending from a middle of the connecting part. The positioning part is located between the pair of auxiliary gears with 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 allow the main gear to contact with the auxiliary gears. The first teeth engage with the second teeth to make the first main body rotate relatively about the second main body.

대표청구항 ▼

1. 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

1. 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; anda 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 are 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. 2. The rotating mechanism of claim 1, wherein each of the pair of auxiliary gears defines a positioning groove in an end surface of the positioning section opposite to the second meshing section and a plurality of evenly spaced locating recesses in an inner side surface of the positioning groove along a circumferential line of the positioning groove, the opposite ends of the positioning part are rotatably received in the positioning grooves, the connecting piece further comprises a pair of positioning members correspondingly set on the opposite ends of the positioning part received in the positioning grooves, and the positioning members engage with the locating recesses for positioning the relative rotation angle between the first main body and the second main body. 3. The rotating mechanism of claim 2, wherein the radius of the positioning section is less than the radius of the second meshing section. 4. The rotating mechanism of claim 2, wherein the positioning groove is coaxial with the positioning section. 5. The rotating mechanism of claim 2, wherein each of the positioning members comprises a connecting spring and a pair of positioning blocks correspondingly connected to two opposite ends of the connecting spring, the positioning part defines a pair of positioning through holes along a radial direction of the positioning part, the pair of positioning through holes are correspondingly close to two opposite end surfaces of the positioning part, and the positioning members are correspondingly received in the positioning through holes with the positioning blocks extending out of the positioning through holes and resiliently inserted into the locating recesses. 6. The rotating mechanism of claim 1, further comprising 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, the biasing means being disposed between the first main body and the ball shaped joint. 7. The rotating mechanism of claim 6, wherein the connecting sleeve defines a plurality of evenly spaced first positioning recesses and a plurality of evenly spaced second positioning recesses in an inner side surface of the main body, the first positioning recesses are closer to the ball shaped joint than the second positioning recesses, the first positioning recesses are arranged along a first circumferential line of the main body, the second positioning recesses are arranged along a second circumferential line of the main body, the first circumferential line is closer to the ball shaped joint than the second circumferential line, the connecting part comprises a pair of positioning bumps correspondingly extending from two opposite ends of a diameter of the connecting part, and the positioning bumps are selectively inserted into the first positioning recesses or the second positioning recesses to position the connecting piece. 8. The rotating mechanism of claim 7, wherein when the positioning bumps are inserted into the first positioning recesses, the first teeth engage with the second teeth to make the first main body rotate relatively about the second main body. 9. The rotating mechanism of claim 7, wherein when the positioning bumps are inserted into the second positioning recesses, the main gear is separated from the auxiliary gears, and the first main body and the second main body independently rotate about an axial direction of the connecting part. 10. 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; anda 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; anda 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. 11. The electronic device of claim 10, further comprising a positioning spring, wherein the first groove further defines an inner end surface perpendicular to the parallel first inner side surfaces, the first main body defines a locating hole in the inner end surface, the main gear defines therein a positioning hole between the pair of first meshing sections, wherein and two opposite ends of the positioning spring are correspondingly fixed in a bottom of the locating hole and a bottom of the positioning hole. 12. The electronic device of claim 10, wherein each of the pair of auxiliary gears defines a positioning groove in an end surface of the positioning section opposite to the second meshing section and a plurality of evenly spaced locating recesses in an inner side surface of the positioning groove along a single circumferential line of the positioning groove, the opposite ends of the positioning part are rotatably received in the positioning grooves, the connecting piece further comprises a pair of positioning members correspondingly set on the opposite ends of the positioning part received in the positioning grooves, and the positioning members engage with the locating recesses for positioning the relative rotation angle between the first main body and the second main body. 13. The electronic device of claim 12, wherein the radius of the positioning section is less than the radius of the second meshing section, and the positioning groove is coaxial with the positioning section. 14. The electronic device of claim 12, wherein each of the positioning members comprises a connecting spring and a pair of positioning blocks correspondingly connected to two opposite ends of the connecting spring, the positioning part defines a pair of positioning through holes passing through a radial direction of the positioning part, the pair of positioning through holes are correspondingly close to two opposite end surfaces of the positioning part, and the positioning members are correspondingly received in the positioning through holes with the positioning blocks extending out of the positioning through holes and resiliently inserted into the locating recesses. 15. The electronic device of claim 10, further comprising 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, the biasing means being disposed between the first main body and the ball shaped joint. 16. The electronic device of claim 15, wherein the connecting sleeve defines a plurality of evenly spaced first positioning recesses and a plurality of evenly spaced second positioning recesses in an inner side surface of the main body, the first positioning recesses are closer to the ball shaped joint than the second positioning recesses, the first positioning recesses and the second positioning recesses are arranged along a circumferential line of the main body, the connecting part comprises a pair of positioning bumps correspondingly extending from two opposite ends of a diameter of the connecting part, and the positioning bumps are selectively inserted into the first positioning recesses or the second positioning recesses to position the connecting piece. 17. The electronic device of claim 16, wherein when the positioning bumps are inserted into the first positioning recesses, and the first teeth engage with the second teeth to make the first main body rotate relatively about the second main body. 18. The electronic device of claim 16, wherein when the positioning bumps are inserted into the second positioning recesses, the main gear is separated from the auxiliary gears, and the first main body and the second main body independently rotate about an axial direction of the connecting part. 19. 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; anda 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.