Differential

Abstract

A differential capable of satisfying a demand for an improvement in performance and a reduction in cost in which the pinion shaft 19 is movably disposed in the differential case 2, and sliding bearings 16, 41, 42 are disposed between mutually opposite surfaces of the pair of side gears 13 and the differential case 2 and between mutually opposite surfaces of the pinions 12 and the differential case 2, respectively.

1 - 3 . (canceled)  
   
   
       4 . A differential in which four pinions are rotatably held on a pinion shaft formed by cross-shaped in a closed differential case rotated together with a ring gear by a driving force of an energy conversion machine, 
 characterized in that the pinion shaft has two rod-like straight pinion shafts,    each of the straight pinion shafts has a concave engagement portion in which a direction followed from the outside to the inside is assumed as a depth direction and in which a planar bottom face is provided at its axis center,    the concave engagement portion is formed in a direction perpendicular to the axial direction at the center of the axial direction,    and the two straight pinion shafts are positioned cross-shaped by disposing the pinion shafts so that the bottom faces of the concave engagement portions of the two straight pinion shafts can face each other.    
   
   
       5 . A differential according to  claim 4 , in which the two straight pinion shafts are identical to each other in shape.  
   
   
       6 - 7 . (canceled)