Vehicle differential

Patent metadata

Field	Value
Publication number	US-10012302-B2
Application number	US-201615220831-A
Country	US
Kind code	B2
Filing date	Jul 27, 2016
Priority date	Aug 7, 2015
Publication date	Jul 3, 2018
Grant date	Jul 3, 2018

Abstract

A vehicle differential includes a pair of side gears, a pinion gear, a differential case, and an annular ring gear. The differential case includes an opening penetrating a peripheral wall of the differential case. The annular ring gear is attached to an outer side of the peripheral wall of the differential case such that a central axis of the annular ring gear and a rotational axis of the differential case coincide with each other. The annular ring gear includes a protrusion on an inner peripheral edge of the annular ring gear. The protrusion covers a part of the opening when viewed in a penetration direction of the opening. The protrusion protrudes toward the inner side of the opening in the radial direction of the rotational axis as compared with an other part of the inner peripheral edge of the annular ring gear that has no protrusion.

First claim

What is claimed is:

1. A vehicle differential comprising:
a pair of side gears;
a pinion gear meshing with the side gears;
a differential case that has a peripheral wall housing the side gears and the pinion gear, the differential case including an opening penetrating the differential case at a part of the peripheral wall, the differential case configured to rotate around a rotational axis; and
an annular ring gear attached to an outer side of the peripheral wall of the differential case such that a central axis of the annular ring gear and the rotational axis coincide with each other, the annular ring gear including a protrusion on an inner peripheral edge of the annular ring gear, the protrusion covering a part of the opening when viewed in a penetration direction of the opening, the protrusion protruding toward an inner side of the opening in a radial direction of the rotational axis as compared with an other part of the inner peripheral edge of the annular ring gear that has no protrusion.

2. The vehicle differential according to claim 1 , wherein a facewidth of the annular ring gear in the radial direction of the rotational axis is larger in the part having the protrusion than in the other part that has no protrusion.

3. The vehicle differential according to claim 1 , wherein an inner edge of the protrusion is a straight surface.

4. The vehicle differential according to claim 1 , wherein an inner edge of the protrusion is defined by two straight surfaces.

5. The vehicle differential according to claim 1 , wherein an inner edge of the protrusion is a curved surface.

Assignees

• Toyota Motor Co Ltd

Inventors

• Kiten Takashi
• Mizoguchi Norihiro

Classifications

• F16H2048/385

  of the ring or crown gear · CPC title

• F16H48/40 Primary

  characterised by features of the rotating cases · CPC title

• F16H48/38

  Constructional details (the outer casing comprising the differential and supporting input and output shafts F16H57/037) · CPC title

• F16H48/08 Primary

  comprising bevel gears · CPC title

• F16H2055/173

  Crown gears, i.e. gears have axially arranged teeth · CPC title