Patent ID: 6843748

Claim:
A transmission mechanism with a single differential mechanism for an automotive vehicle comprising: a drive housing ( 30 ) having a first bearing bracket ( 301 ) disposed at the upper portion thereof, a second bearing bracket ( 302 ) and a third bearing bracket ( 303 ) disposed at the middle portion thereof, a fourth bearing bracket ( 304 ) disposed at the right lower portion thereof, and a fifth bearing bracket ( 305 ) disposed at the left lower portion thereof; the differential mechanism ( 13 ) including a right side bevel gear ( 11 ), a left side bevel gear ( 14 ), a left ring gear ( 6 ) and a right ring gear ( 9 ), planetary gears ( 131 ), and differential cases ( 133 , 134 ); a driving power input shaft ( 1 ) mounted within said first bearing bracket ( 301 ); a first gear ( 4 ) mounted on said driving power input shaft ( 1 ); a first dual tandem gear ( 5 ) mounted on said driving power input shaft ( 1 ); a first sliding dual tandem gear ( 7 ) slidably mounted on said driving power input shaft ( 1 ); a second sliding dual tandem gear ( 8 ) slidably mounted on said driving power input shaft ( 1 ) and engaged to said first sliding dual tandem ( 7 ); a front left wheel output shaft ( 23 ) mounted within said second bearing bracket ( 302 ), on which said left side bevel gear ( 14 ) is mounted; a rear right wheel output shaft ( 12 ) mounted within said third bearing bracket ( 303 ), on which said right side bevel gear ( 11 ) is mounted; a second gear ( 2 ) fixed to said front left wheel output shaft ( 23 ); a second dual tandem gear ( 3 ) mounted on said front left wheel output shaft ( 23 ); a third gear ( 10 ) connected with a right side bevel gear ( 11 ); a front right wheel output shaft ( 22 ) mounted within said fourth bearing bracket ( 304 ); a first connecting shaft ( 15 ) connected with said front right wheel output shaft ( 22 ) via a first slidable engaging member ( 18 ); a fourth gear ( 16 ) fixed to said first connecting shaft ( 15 ) and meshing with said third gear ( 10 ); a rear left wheel output shaft ( 17 ) mounted within said fifth bearing bracket ( 305 ); a second connecting shaft ( 20 ) connected to said rear left wheel output shaft ( 17 ) via a second slidable engaging member ( 19 ); and a fifth gear ( 21 ) fixed to said concentric shaft ( 15 ) and meshing with said second gear ( 2 ), wherein when said driving power input shaft ( 1 ) is driven, said first sliding gear ( 7 ) can be regulated to mesh with said left ring gear ( 6 ) or said second sliding gear ( 8 ) can be regulated to mesh with said right ring gear ( 9 ) so that the automotive vehicle can obtain different speeds, and wheels at the same side of the automotive vehicle can be driven at the same time.