Differential device

A differential device comprising a differential case that can rotate around a predetermined axis, a pair of side gears that are rotatably supported on the differential case, a pinion gear that meshes with the pair of side gears, and a pinion shaft that has a shaft portion in a direction orthogonal to an axial direction of the differential case and rotatably supports the pinion gear on the differential case via the shaft portion, the differential case having a pair of case half bodies that are mutually adjacently disposed in the axial direction,

• wherein one case half body has a cutout part that extends in the axial direction while having one end opening on a face opposing the other case half body and that enables the shaft portion of the pinion shaft to be inserted thereinto,
• said other case half body has a support projecting portion that is fitted into the cutout part in the axial direction, and
• in an assembled state of the differential device in which the pair of case half bodies are joined to each other, the shaft portion of the pinion shaft inserted into the cutout part is held and fixed between the cutout part and the support projecting portion fitted into the cutout part.