Patent ID: 6776737
Filing Date: 2004-08-17
Classification: F16H

Abstract:
A differential gear to be driven by a driving device to rotate a first driven member and a second driven member, the differential gear comprising:a main gear wheel to be driven by said driving device to rotate on an imaginary axis, said main gear wheel having a first side and a second side opposite to said first side; a first output device, said first output device comprising a first sun gear pivoted to the first side of said main gear wheel for free rotation on said imaginary axis, and a first output shaft extended axially outwardly from the center of said first sun gear along said imaginary axis and adapted to rotate said first driven member; a second output device, said second output device comprising a second sun gear pivoted to the second side of said main gear wheel for free rotation on said imaginary axis, and a second output shaft extended axially outwardly from the center of said second sun gear along said imaginary axis and adapted to rotate said second driven member; and a first planet gear set, said first planet gear set comprising a first planet gear pivoted to the first side of said main gear wheel and meshed with said first sun gear, a second planet gear pivoted to the first side of said main gear wheel and meshed with said first planet gear, and a third planet gear pivoted to the second side of said main gear wheel and meshed with said second sun gear for synchronous rotation with said second planet gear in direction same as said second planet gear, the number of teeth of said second planet gear being less than said first and third planet gear.