| 摘要 |
PURPOSE:To cut cost by preparing a stepless speed change gear which can be revolved normally and reversely in the combination of a differential gear apparatus and a variable pulley apparatus. CONSTITUTION:An input fixing pulley 16 is fixed onto an input fixing pulley case 9, and a bevel gear shaft 10 is installed in the direction perpendicular to the shaft core line of the input fixing pulley 16, and the bevel gears 11 and 12 at the inner edges of an input shaft 7 and an output shaft 6, are respectively, engaged perpendicularly, and an input variable pulley 4 is fixed onto the input shaft 7, and two V-belts are laid in parallel between an input fixing pulley 5 and the input variable pulley 4 from the output shaft 25 of a motor. Therefore, a stepless speed change gear which can be revolved normally and reversely can be prepared in mass production using the technique having low accuracy, by the combination of the conventional differential apparatus and a variable pulley apparatus, and cost can be reduced. |
