A nesting structure supports a differential case. The nesting structure includes a first support structure that supports the differential case. The nesting structure includes a second support structure spaced apart from the first support structure to define a support opening. The support opening receives a first shim and establishes a first orientation between the first shim and the differential case in which the first shim is non-parallel with respect to a first bearing surface of the differential case.

A differential apparatus includes a differential gear mechanism in which side gears mesh with pinion gears, a pinion shaft that rotatably supports the pinion gear, a slide member that supports the ends of the pinion shaft, and pinion gear washers each disposed between the slide member and a corresponding one of the pinion gears. Movement of each pinion gear washer toward the slide member in the axial direction of the pinion shaft is restricted. When a force of the pinion gear pressing the pinion gear washer toward the slide member is less than a predetermined value, a clearance is formed between the slide member and the pinion gear washer. When the force of the pinion gear pressing the pinion gear washer toward the slide member is greater than the predetermined value, the outer surface of the pinion gear washer abuts the inner surface of the slide member.

In a differential device, side gears include: shaft portions; and intermediate wall portions each formed in a flat ring plate shape orthogonal to an axis of output shafts and integrally connecting between the shaft portions and toothing portions separated outward from the shaft portions in a radial direction of an input member, respectively. At least part of each intermediate wall portion is formed as a thin portion having an outside surface retreating axially inward from a backside of the tooting portion. A side wall portion of a cover portion integrally includes an outer-periphery-side side wall portion having an inside surface facing the backside of the toothing portion, and an inner-periphery-side side wall portion having an inside surface facing a backside of the intermediate wall portion. At least part of the inner-periphery-side side wall portion is formed thicker than the outer-periphery-side side wall portion and protrudes toward the thin portion.

In a differential device where sleeves passing through a differential case are connected with side gears and a washer is disposed between a back face of the side gear and an inner surface of the case facing each other, at least one of the side gears includes a shaft portion extending axially outwardly from the back face, the shaft portion and an inner peripheral surface of the sleeve being coupled together through a press-fit coupling. The one side gear has a washer support portion at a root of the shaft portion, the washer support portion having an outer peripheral surface in which an inner peripheral portion of the washer is fitted, and having an axial end face against which an end face on a front side in a press-fitting direction of the sleeve abuts or which the end face faces across a gap smaller than a thickness of the washer.

The present disclosure provides a differential assembly100. The differential assembly100 includes a differential case102, a plurality of gears104, and an elastic element106. The plurality of gears104 is arranged inside the differential case 102. The elastic element106 is disposed between the differential case102 and the plurality of gears104. The elastic element106 further comprises an inner conferential surface204, an outer circumferential surface202, a plurality of mounting holes302, a plurality of apertures206, a plurality of discs208, and a plurality of lubrication arrangements. The plurality of lubrication arrangements provided at a circumferential direction of the inner204 and the outer circumferential surface202 of the elastic element106 for flowing a lubricant inside the differential case102, the plurality of discs208, and the plurality of gears104. Further, the elastic element106 is a disc washer, and the plurality of lubrication arrangement includes a plurality of oil holes402, a plurality of oil cut-outs404, and a plurality of oil grooves406.

A washer includes at least one differential gear back face part covering a back face of one differential gear, an output gear back face part covering a back face of one output gear, and at least one linking part connecting between the output gear back face part and the differential gear back face part, an abutment part being formed on an inner face of the differential gear back face part, the abutment part abutting against the back face of the differential gear via a flat face.

A washer includes at least one differential gear back face part covering a back face of one differential gear, an output gear back face part covering a back face of one output gear, and at least one linking part connecting between the output gear back face part and the differential gear back face part. A guideway extending from an outer peripheral part of the output gear back face part up to the differential gear back face part is formed in an inner face of the linking part, the guideway including a step separating a middle part of the linking part from both end parts of the linking part.

A vehicular differential apparatus includes: a differential case; a first output portion in which a first coupling member and a first side gear mesh with each other via helical teeth; a second output portion in which a second coupling member and a second side gear mesh with each other via helical teeth; and a center washer 30 disposed between the first and second output portions. A clearance through which the first coupling member is movable in an axial direction between the center washer and the first sidewall portion is different in axial width from that through which the first side gear is movable in that direction therebetween. A clearance through which the second coupling member is movable in the axial direction between the center washer and the second sidewall portion is different in axial width from that through which the second side gear is movable in that direction therebetween.

A differential device includes: an input member inputted with driving force; a differential gear supported in the input member and capable of rotating relative to the input member and revolving around rotation center of the input member with rotation of the input member; paired output gears each including in an outer peripheral portion thereof tooth portion meshing with the differential gear; and a washer interposed between the input member and back surface of each output gear. A washer abutting surface in the back surface of the output gear abuts against the washer and has an outermost peripheral end thereof located at the same position as or outward of outermost peripheral end of meshing portion between the output and differential gears in radial direction of output gear. An outer peripheral end portion of the washer extends radially outward than the washer abutting surface.

A differential gear includes a first connecting member with straight-spline protrusions on its inner periphery; a second connecting member with straight-spline protrusions on its inner periphery; a first side gear; and a second side gear. The first side gear includes a first cylindrical portion coupled to the first connecting member by helical splines, and a first wall portion extending radially inward. The second side gear includes a second cylindrical portion coupled to the second connecting member by helical splines, and a second wall portion extending radially inward. The first wall portion of the first side gear protrudes radially inward beyond the straight-spline protrusions of the first connecting member, and the second wall portion of the second side gear protrudes radially inward beyond the straight-spline protrusions of the second connecting member.