A differential assembly having a differential case, a differential gearset, a clutch pack and a preload spring. The differential gearset is received in the case and has a side gear and one or more differential pinion shaft members onto which differential pinions are rotatably mounted. The clutch pack is received in the differential case and has a plurality of first clutch plates, which are axially slidably but non-rotatably coupled to the differential case, and a plurality of second clutch plates that are interleaved with the first clutch plates and axially slidably but non-rotatably coupled to the side gear. The preload spring abuts the one or more differential pinion shaft members and the side gear and biases the side gear away from the one or more differential pinion shaft members to preload the clutch pack.

A thrust washer and a differential containing a thrust washer. The differential has a housing, a spider and one or more spider gears. The thrust washer includes a body having an annular shape and a width configured to approximately match with a width of the one or more spider gears. The thrust washer is further configured to engage with the spider to prevent or reduce the thrust washer from rotating relative to the housing when the thrust washer is installed in the differential.

A power transmission device includes a pinion gear having a large pinion gear and a small pinion gear, a carrier that supports the pinion gear, a ring gear that engages with the small pinion gear, an oil supply unit positioned above a horizontal line that passes through a revolution center of the pinion gear, and a downstream side wall part facing a gear surface of the large pinion gear. The downstream side wall part is arranged to be adjacent to the oil supply unit further downstream in a revolution direction of the pinion gear than the oil supply unit when viewed from an axial direction.

A power transmission device includes a box, a case disposed in the box, a differential mechanism housed in the case, and a planetary gear mechanism disposed in the box and supported by the case. The planetary gear mechanism includes a sun gear and a pinion gear that engages with the sun gear. The box has a shelf part above a horizontal line that passes through a revolution center of the pinion gear. The shelf part is arranged at a position that does not overlap the sun gear when viewed from radially above.

A thrust washer and a differential containing a thrust washer. The differential has a housing, a spider with a plurality of spider arms, and one or more spider gears. The thrust washer includes a body comprising an annular shape having a width configured to approximately match a width of the one or more spider gears and further configured to a have a slope along the width configured to conform with an inner diameter of the housing and at least one engagement mechanism to engage with at least two of the plurality of spider arms to engage the thrust washer with the spider to approximately prevent the thrust washer from rotating relative to the housing when the thrust washer is installed in the differential.

A differential (1) includes pinion gears (2, 3), a drive wheel (4), and at least one cover (5, 13), wherein: the outside of the drive wheel (4) has toothing (7) extending circumferentially around an axis of rotation (6) and the inside of the drive wheel is provided with bearing points (8, 9); the pinion gears (2, 3) are mounted on the bearing points (8, 9) in the drive wheel (4); and the differential (1) is closed on at least one side by the at least one cover (5, 13).

A thrust washer and a differential containing a thrust washer. The differential has a housing, a spider and one or more spider gears. The thrust washer includes a body having an annular shape and a width configured to approximately match with a width of the one or more spider gears. The thrust washer is further configured to engage with the spider to prevent or reduce the thrust washer from rotating relative to the housing when the thrust washer is installed in the differential.

A differential for a rear wheel drive vehicle is previewed comprising a differential case for rotationally supporting and housing a pinion shaft with the pinion shaft extending axially through an opening in the differential case. A pinion seal extends around the pinion shaft and has an outer edge abutting a cavity wall defining the opening in the differential case. The pinion seal has an axial lip projecting in an axial direction. A plastic deflector has a discshaped main body formed of a plastic material, a passageway extending through the plastic deflector, and a stainless steel ring fixedly coupled to the disc-shaped main body providing a stainless steel running surface. The plastic deflector is assembled on the pinion shaft such that the pinion shaft extends through the deflector passageway and the stainless steel running surface abuts the axial lip of the pinion seal.

A gear assembly is provided that simplifies the integration of a differential assembly into the hollow rotor of an electric motor. The gear assembly utilizes a hollow cross member that includes a central portion and a plurality of hollow extension members onto which the gears are mounted. Within each of the hollow extension members is a pin. When the pins are withdrawn, the assembly fits unimpeded within the hollow rotor. When the pins are partially extended out of the corresponding extension members, the ends of the pins fit within apertures in the rotor. A plug fits within a centrally located thru-hole in the central portion of the hollow cross member, thereby locking the pins in the extended position and locking the gear assembly in place.

A differential assembly including a differential housing, a gear assembly, a shaft, and a ring gear. The differential housing generally includes a peripheral wall, first and second end walls connected to the peripheral wall and spaced apart along a rotational axis so that the peripheral wall and the first and second end walls, in combination, define an internal cavity, a transitional region defined in the differential housing where the second end wall meets the peripheral wall, and a first window formed through the peripheral wall, the transitional region, and/or the second end wall and into the internal cavity, the first window including a central portion and first and second ear portions adjoining the central portion and extending outwardly therefrom. The first window defines a shape when projected perpendicularly onto a first plane including both the rotational axis and a pinion axis, said pinion axis extending perpendicular to the rotational axis.